List of galaxies
Appearance
This is a list of notable galaxies.
List
- Abell 1835 IR1916
- AM 0644-741
- Andromeda Galaxy (M31/NGC 224)
- Andromeda I
- Antennae Galaxies (NGC 4038/NGC 4039)
- Aquarius Dwarf
- Arp 299 - pair of colliding galaxies; has six recorded supernovae (in total). This is composed of IC 694 and NGC 3690.
- Black Eye Galaxy (M64/NGC 4826)
- Bode's Galaxy (M81/NGC 3031)
- Canis Major Dwarf Galaxy
- Carina Dwarf
- Centaurus A Galaxy
- Cigar Galaxy (M82/NGC 3034)
- Circinus Galaxy
- Comet Galaxy
- Draco Dwarf
- Dwingeloo 1
- Dwingeloo 2
- Eyes Galaxies (NGC 4435-4438)
- Fornax Dwarf
- Hoag's object (a ring galaxy)
- Huchra's Lens
- HVC 127-41-330
- I Zwicky 18
- IC 10
- IC 342
- IC 1613
- IOK-1 - Farthest galaxy ever observed. (formed 750 million years after the Big Bang)
- Large Magellanic Cloud
- Leo I (dwarf galaxy)
- LGS 3
- M32 (NGC 221)
- M49
- M58
- M59
- M60
- M61
- M65
- M66
- M74 (NGC 628)
- M77
- M84
- M85
- M86
- M87
- M88
- M89
- M90
- M91
- M94
- M95
- M96
- M98
- M99
- M100 (NGC 4321)
- M105
- M106
- M108
- M109
- M110 (NGC 205)
- Maffei I
- Maffei II
- Mice Galaxies
- Milky Way Galaxy - home galaxy of Earth, satellites
- NGC 1
- NGC 55
- NGC 147
- NGC 185
- NGC 300
- NGC 404
- NGC 891
- NGC 1055 - a galaxy near M77
- NGC 1087 - a short-barred (i.e. it has a short bar) galaxy
- NGC 1260
- NGC 1275
- NGC 1300
- NGC 1316 (Fornax A Galaxy)
- NGC 1365
- NGC 1532
- NGC 1569
- NGC 1672 - a galaxy similar to NGC 1300
- NGC 1705
- NGC 2207 and IC 2163 - pair of colliding galaxies.
- NGC 2403
- NGC 2770 'Supernova Factory' the location of three supernovas since 1999
- NGC 2812
- NGC 2976
- NGC 3077
- NGC 3079
- NGC 3109
- NGC 3184
- NGC 3226
- NGC 3227
- NGC 3310
- NGC 3314 - a galaxy overlapping another galaxy, thus constituting a galactic pair (i.e. the two are listed as a single object).
- NGC 3370
- NGC 3384
- NGC 3628
- NGC 3949 - part of M109 group
- NGC 3953 - part of M109 group
- NGC 3982 - part of M109 group
- NGC 4013
- NGC 4314
- NGC 4395
- NGC 4414
- NGC 4555 - an isolated elliptical galaxy.
- NGC 4565
- NGC 4567 and NGC 4568 - also known as "Siamese Twins" or the Butterfly Galaxies.
- NGC 4618/NGC 4625 - interacting galaxies, with each being asymmetric and having one spiral arm.
- NGC 4881
- NGC 4945
- NGC 5033
- NGC 5078
- NGC 5090 and NGC 5091 - pair of colliing galaxies.
- NGC 5195
- NGC 6240
- NGC 6822 (Barnards galaxy)
- NGC 7331
- NGC 7742
- Galaxy_0402+379
- Pegasus Dwarf
- Phoenix Dwarf
- Pinwheel Galaxy (M101/NGC 5457)
- RXJ1242-11
- Sagittarius Dwarf Elliptical Galaxy
- Sculptor Dwarf
- Sculptor Galaxy
- Sextans A
- Sextans Dwarf
- Small Magellanic Cloud
- Sombrero Galaxy (M104)
- Southern Pinwheel Galaxy (M83/NGC 5236)
- Spindle Galaxy
- Spindle Galaxy in Draco (NGC 5866, possibly M102)
- Spindle Galaxy in Sextans (NGC 3115)
- Spiral Galaxy ESO 269-57
- Sunflower Galaxy (M63)
- Triangulum Galaxy (M33/NGC 598)
- Tucana Dwarf
- Ursa Major I Dwarf
- Ursa Major II Dwarf
- Ursa Minor Dwarf
- VIRGOHI21
- Virgo Stellar Stream
- Whirlpool Galaxy (M51/NGC 5194)
- Willman 1
- Wolf-Lundmark-Melotte (WLM)
- UGC 5675
- ZW II 96
List of galaxies
Galaxy | Notes |
---|---|
M87 | This is the central galaxy of the Virgo Cluster, the central cluster of the Local Supercluster. [1] |
NGC 3314 | This is a pair of spiral galaxies, one superimposed on another, at two separate and distinct ranges, and unrelated to each other. It is a rare chance visual alignment. |
ESO 137-001 | Lying in the galaxy cluster Abell 3627, this galaxy is being stripped of its gas by the pressure of the intracluster medium (ICM), due to its high speed traversal through the cluster, and is leaving a high density tail with large amounts of star formation. The tail features the largest amount of star formation outside of a galaxy seen so far. The galaxy has the appearance of a comet, with the head being the galaxy, and a tail of gas and stars. [2] [3] [4] [5] |
Comet Galaxy | Lying in galaxy cluster Abell 2667, this spiral galaxy is being tidally stripped of stars and gas through its high speed traversal through the cluster, having the appearance of a comet. |
List of named galaxies
This is a list of galaxies that are well known by something other than an entry in a catalog or list, or a set of coordinates, or a systematic designation.
Galaxy | Origin of name | Notes |
---|---|---|
Milky Way Galaxy | This is our galaxy, it is named after the nebulosity in the night sky that marks the densest concentration of stars of our galaxy in the sky, which appears to blur together into a faint glow, called the Milky Way. | |
Andromeda | Commonly just Andromeda, this, called the Andromeda Galaxy, Andromeda Nebula, Great Andromeda Nebula, Andromeda Spiral Nebula, and such, has been traditionally called Andromeda, after the constellation in which it lies. | |
Cartwheel Galaxy | This galaxy is named after a cartwheel, because its visual appearance is similar to that of a spoked cartwheel. | |
Comet Galaxy | This galaxy is named after its unusual appearance, looking like a comet. | The comet effect is caused by tidal stripping by its galaxy cluster, Abell 2667. |
Hoag's Object | This is named after Art Hoag, who discovered this ring galaxy. | It is of the subtype Hoag-type galaxy, and may in fact be a polar-ring galaxy with the ring in the plane of rotation of the central object. |
Large Magellanic Cloud | This is named after Ferdinand Magellan | This is the fourth largest galaxy in the Local Group, and forms a pair with the SMC, and from recent research, may not be part of the Milky Way system of satellites at all. |
Small Magellanic Cloud | This is named after Ferdinand Magellan | This forms a pair with the LMC, and from recent research, may not be part of the Milky Way system of satellites at all. |
Mayall's Object | This is named after Nicholas U. Mayall, of the Lick Observatory, who discovered it. [6] [7] [8] | Also called VV 32 and Arp 148, this is a very peculiar looking object, and is likely to be not one galaxy, but two galaxies undergoing a collision. Event in images is a spindle shape and a ring shape. |
Pinwheel Galaxy | ||
Sombrero Galaxy | This is named after the sombrero hat, as it looks like one. | |
Sunflower Galaxy | ||
Tadpole Galaxy | The name comes from the resemblence of the galaxy to a tadpole. | The appearance resulted from tidal interaction that drew out a long tidal tail. |
Whirlpool Galaxy |
List of naked-eye galaxies
This is a list of galaxies that are visible to the naked-eye, for at the very least, keen-eyed observers in a very dark-sky environment that is high in altitude, during clear and stable weather.
Galaxy | Apparent Magnitude | Distance | Notes |
---|---|---|---|
Milky Way Galaxy | -26.74 (the Sun) | 0 | This is our galaxy, most things visible to the naked-eye in the sky are part of it, including the Milky Way composing the zone of avoidance. [9] |
Large Magellanic Cloud | 0.9 | 160 kly (50kpc) | Visible only from the southern hemisphere. It is also the brightest patch of nebulosity in the sky. [9] [10] [11] |
Small Magellanic Cloud (NGC292) | 2.7 | 200 kly (60kpc) | Visible only from the southern hemisphere. [9] [12] |
Andromeda Galaxy (M31 , NGC224) | 3.4 | 2.5 Mly (780kpc) | Once called the Great Andromeda Nebula, it is situated in the Andromeda constellation. [9] [13] |
Omega Centauri (NGC5139) | 3.7 | 18 kly (5.5kpc) | Omega Centauri is not currently considered a galaxy, per se, it is considered a former galaxy, and all that remains of one that was cannibalized by the Milky Way. [14] |
Triangulum Galaxy (M33 , NGC598) | 5.7 | 2.9 Mly (900 kpc) | It is difficult to observe using the unaided eye. [15] [16] [17] |
Bode's Galaxy (M81 , NGC3031) | 6.9 | 12 Mly (3.6Mpc) | [16] [18] |
- Sagittarius Dwarf Elliptical Galaxy is not listed, because it is not discernible as being a separate galaxy in the sky.
Firsts
First | Galaxy | Date | Notes |
---|---|---|---|
First galaxy | Milky Way Galaxy & Andromeda Galaxy | 1923 | Edwin Hubble determined the distance to the Andromeda Nebula, and found that it could not be part of the Milky Way, so defining that Milky Way was not the entire universe, and making the two separate objects, and two galaxies. However, the first galaxies seen would be all of the naked-eye galaxies, but they were not identified as such until the 20th century. |
First radio galaxy | Cygnus A | 1952 | Of several items, then called radio stars, Cygnus A was identified with a distant galaxy, being the first of many radio stars to become a radio galaxy. [19] |
First quasar | 3C273 3C48 |
1962 1960 |
3C273 was the first quasar with its redshift determined, and by some considered the first quasar. 3C48 was the first "radio-star" with an unreadable spectrum, and by others considered the first quasar. |
First Seyfert galaxy | NGC 1068 (M77) | 1908 | The characteristics of Seyfert galaxies were first observed in M77 in 1908, however, Seyferts were defined as a class in 1943. [20] |
Prototypical BL Lac object | BL Lacertae (BL Lac) | This AGN was originally catalogued as a variable star, and "stars" of its type are considered BL Lac objects. | |
First discovered object, later identified to be a cannibalized galaxy | Omega Centauri | Omega Centauri is considered the core of a disrupted dwarf spheroidal galaxy cannibalized by the Milky Way, and was originally catalogued in 1677 as a nebula. It is currently catalogued as a globular cluster. | |
First superluminal galactic jet | 3C279 | 1971 | The jet is emitted by a quasar |
First superluminal jet from a Seyfert | III Zw 2 | 2000 | [21] |
First spiral galaxy | Whirlpool Galaxy | 1845 | Lord William Parsons, Earl of Rosse discovered the first spiral nebula from observing the M51 white nebula. [22] |
Extremes
This list is incomplete; you can help by adding missing items. |
Title | Galaxy | Data | Notes |
---|---|---|---|
Least separation between binary central black holes | 4C 37.11 | 24 ly (7.3pc) | OJ 287 has an inferred pair with a 12 year orbital period, and thus would be much closer than 4C 37.11's pair. |
Distances
Title | Galaxy | Distance | Notes |
---|---|---|---|
Closest neighbouring galaxy | Canis Major Dwarf | 0.025 Mly | Discovered in 2003, a satellite of the Milky Way, slowing being cannibalized by it. |
Most distant galaxy | IOK-1 | z=6.96 | Discovered in 2006, it is the most distant commonly accepted galaxy, and has had its redshift spectroscopically determined. |
Closest quasar | 3C 273 | z=0.158 | First identified quasar, this is the most commonly accepted nearest quasar. |
Most distant quasar | CFHQS J2329-0301 | z=6.43 | Discovered in 2007. |
Closest radio galaxy | Centaurus A (NGC 5128 , PKS 1322-427) | 13.7 Mly | [23] |
Most distant radio galaxy | TN J0924-2201 | z=5.2 | |
Closest Seyfert galaxy | Circinus Galaxy | 13 Mly | This is also the closest Seyfert 2 galaxy. The closest Seyfert 1 galaxy is NGC 4151. |
Most distant Seyfert galaxy | z= | ||
Closest blazar | Markarian 421 (Mrk 421, Mkn 421, PKS 1101+384, LEDA 33452) | z=0.030 | This is a BL Lac object. [24] [25] |
Most distant blazar | Q0906+6930 | z=5.47 | This is a flat spectrum radio-loud quasar type blazar. [26] [27] |
Closest BL Lac object | Markarian 421 (Mkn 421, Mrk 421, PKS 1101+384, LEDA 33452) | z=0.030 | [24] [25] |
Most distant BL Lac object | z= | ||
Closest LINER | |||
Most distant LINER | z= | ||
Closest LIRG | |||
Most distant LIRG | z= | ||
Closest ULIRG | IC 1127 (Arp 220 , APG 220) | z=0.018 | [28] |
Most distant ULIRG | z= | ||
Closest starburst galaxy | Cigar Galaxy (M82 , Arp 337/APG 337 , 3C 231 , Ursa Major A) | 3.2Mpc | [29] [30] |
Most distant starburst galaxy | z= |
Brightness and power
Title | Galaxy | Data | Notes |
---|---|---|---|
Apparently brightest galaxy | Large Magellanic Cloud | Apparent magnitude 0.6 | |
Apparently faintest galaxy | Apparent magnitude | ||
Intrinsically brightest galaxy | Absolute magnitude | Markarian 231 is the most luminous nearby galaxy. | |
Intrinsically faintest galaxy | Boötes Dwarf Galaxy (Boo dSph) | Absolute magnitude -6.75 | This does not include dark galaxies. |
Highest surface brightness galaxy | |||
Lowest surface brightness galaxy | Andromeda IX | ||
Visually brightest galaxy | This galaxy has high surface brightness combined with high apparent brightness. | ||
Visually faintest galaxy | This galaxy has low surface brightness combined with low apparent brightness. |
Mass
Title | Galaxy | Mass | Notes |
---|---|---|---|
Least massive galaxy | |||
Most massive galaxy | Messier 87 (M87, NGC 4486, Virgo A) | [31] | |
Most massive spiral galaxy | ISOHDFS 27 | The preceding most massive spiral was UGC 12591 [32] | |
Least massive galaxy with globular cluster(s) | Andromeda I | [33] |
Closest galaxies
Rank | Galaxy | Distance | Notes |
---|---|---|---|
1 | Milky Way Galaxy | 0 | This is our galaxy, as such, we are part of it. |
Omega Centauri | 0.0183 Mly | Omega Centauri is not currently considered a galaxy, per se, it is considered a former galaxy, and all that remains of one that was cannibalized by the Milky Way. [14] | |
2 | Canis Major Dwarf | 0.025 Mly | |
3 | Virgo Stellar Stream | 0.030 Mly | |
4 | Sagittarius Dwarf Elliptical Galaxy | 0.081 Mly | |
5 | Large Magellanic Cloud | 0.163 Mly | |
|
Galaxy | Date | Distance | Notes |
---|---|---|---|
Canis Major Dwarf | 2003 - | 0.025 Mly | |
Sagittarius Dwarf Elliptical Galaxy | 1994 − 2003 | 0.081 Mly | |
Large Magellanic Cloud | antiquity − 1994 | 0.163 Mly | This is the upper bound, as it is nearest galaxy observable with the naked-eye. |
Small Magellanic Cloud | 1913 - 1914 | This was the first intergalactic distance measured. In 1913, Ejnar Hertzsprung measures the distance to SMC using Cepheid variables. In 1914, he did it for LMC. | |
Andromeda Galaxy | 1923 | This was the first galaxy determined to be not part of the Milky Way. | |
|
- Omega Centauri does not appear on this list because is not currently considered a galaxy, per se, it is considered a former galaxy, and all that remains of one that was cannibalized by the Milky Way.
Farthest galaxies
Galaxy | Date | Distance | Notes |
---|---|---|---|
IOK-1 | 2006 - | z=6.96 | This was the remotest object known at time of discovery. [34] [35] |
SDF J132522.3+273520 | 2005 − 2006 | z=6.597 | This was the remotest object known at time of discovery. [36] [35] |
SDF J132418.3+271455 | 2003 − 2005 | z=6.578 | This was the remotest object known at time of discovery. [37] [38] [39] [36] |
HCM 6A | 2002 − 2003 | z=6.56 | This was the remotest object known at time of discovery. The galaxy is lensed by galaxy cluster Abell 370. This was the first galaxy, as opposed to quasar, found to exceed redshift 6. It exceeded the redshift of quasar SDSSp J103027.10+052455.0 of z=6.28 [37] [40] [41] [42] [43] [38] |
SSA22−HCM1 | 1999 − 2002 | z=5.74 | This was the remotest object known at time of discovery. In 2000, the quasar SDSSp J104433.04-012502.2 was discovered at z=5.82, becoming the most remote object in the universe known. This was followed by another quasar, SDSSp J103027.10+052455.0 in 2001, the first object exceeding redshift 6, at z=6.28 [44] [45] |
HDF 4-473.0 | 1998 − 1999 | z=5.60 | This was the remotest object known at the time of discovery. [45] |
RD1 (0140+326 RD1) | 1998 | z=5.34 | This was the remotest object known at time of discovery. This was the first object found beyond redshift 5. [46] [47] [48] [49] [45] |
CL 1358+62 G1 & CL 1358+62 G2 | 1997 − 1998 | z=4.92 | These were the remotest objects known at the time of discovery. The pair of galaxies were found lensed by galaxy cluster CL1358+62 (z=0.33). This was the first time since 1964 that something other than a quasar held the record for being the most distant object in the universe. It exceeded the mark set by quasar PC 1247-3406 at z=4.897 [47] [50] [51] [48] [52] [45] |
From 1964 to 1997, the title of most distant object in the universe were held by a succession of quasars. [52] That list is available at list of quasars. | |||
8C 1435+63 | 1994 − 1997 | z=4.25 | This is a radio galaxy. At the time of its discovery, quasar PC 1247-3406 at z=4.73, discovered in 1991 was the most remote object known. This was the last radio galaxy to hold the title of most distant galaxy. This was the first galaxy, as opposed to quasar, that was found beyond redshift 4. [53] [54] [45] [55] |
4C 41.17 | 1990 − 1994 | z=3.792 | This is a radio galaxy. At the time of its discovery, quasar PC 1158+4635, discovered in 1989, was the most remote object known, at z=4.73 In 1991, quasar PC 1247-3406, became the most remote object known, at z=4.897 [56] [57] [53] [45] [55] |
1 Jy 0902+343 (GB6 B0902+3419 , B2 0902+34) | 1988 − 1990 | z=3.395 | This is a radio galaxy. At the time of discovery, quasar Q0051-279 at z=4.43, discovered in 1987, was the most remote object known. In 1989, quasar PC 1158+4635 was discovered at z=4.73, making it the most remote object known. This was the first galaxy discovered above redshift 3. [58] [57] [59] [45] [60] |
3C 256 | 1984 − 1988 | z=1.819 | This is a radio galaxy. At the time, the most remote object was quasar PKS 2000-330, at z=3.78, found in 1982. [45] [61] |
3C 241 | 1984 | z=1.617 | This is a radio galaxy. At the time, the most remote object was quasar PKS 2000-330, at z=3.78, found in 1982. [62] [63] |
3C 324 | 1983 − 1984 | z=1.206 | This is a radio galaxy. At the time, the most remote object was quasar PKS 2000-330, at z=3.78, found in 1982. [64] [62] [45] |
3C 65 | 1982 − 1983 | z=1.176 | This is a radio galaxy. At the time, the most remote object was quasar OQ172, at z=3.53, found in 1974. In 1982, quasar PKS 2000-330 at z=3.78 became the most remote object. |
3C 368 | 1982 | z=1.132 | This is a radio galaxy. At the time, the most remote object was quasar OQ172, at z=3.53, found in 1974. [45] |
3C 252 | 1981 − 1982 | z=1.105 | This is a radio galaxy. At the time, the most remote object was quasar OQ172, at z=3.53, found in 1974. |
3C 6.1 | 1979 - | z=0.840 | This is a radio galaxy. At the time, the most remote object was quasar OQ172, at z=3.53, found in 1974. [45] [65] |
3C 318 | 1976 - | 0.752 | This is a radio galaxy. At the time, the most remote object was quasar OQ172, at z=3.53, found in 1974. [45] |
3C 411 | 1975 - | 0.469 | This is a radio galaxy. At the time, the most remote object was quasar OQ172, at z=3.53, found in 1974. [45] |
From 1964 to 1997, the title of most distant object in the universe were held by a succession of quasars. [52] That list is available at list of quasars. | |||
3C 295 | 1960 - | z=0.461 | This is a radio galaxy. This was the remotest object known at time of discovery of its redshift. This was the last non-quasar to hold the title of most distant object known until 1997. In 1964, quasar 3C 147 became the most distant object in the universe known. [52] [66] [67] [45] [68] |
LEDA 25177 (MCG+01-23-008) | 1951 − 1960 | z=0.2 (V=61000km/s) |
This galaxy lies in the Hydra Supercluster. It is located at B1950.0 08h 55m 4s +03° 21′ and is the BCG of the fainter Hydra Cluster Cl 0855+0321 (ACO 732). [69] [70] [71] [72] [45] [73] [68] |
LEDA 51975 (MCG+05-34-069) | 1936 - | z=0.13 (V=39000km/s) |
The brightest cluster galaxy of the Bootes cluster (ACO 1930), an elliptical galaxy at B1950.0 14h 30m 6s +31° 46′ apparent magnitude 17.8, was found by Milton L. Humason in 1936 to have a 40,000 km/s recessional redshift velocity. [74] [75] [72] |
LEDA 20221 (MCG+06-16-021) | 1932 - | z=0.075 (V=23000km/s) |
This is the BCG of the Gemini Cluster (ACO 568) and was located at B1950.0 07h 05m 0s +35° 04′ [76] [74] |
BCG of WMH Christie's Leo Cluster | 1931 − 1932 | z= (V=19700km/s) |
[77] [78] [79] [76] |
BCG of Baede's Ursa Major Cluster | 1930 − 1931 | z= (V=11700km/s) |
[79] [80] |
NGC 4860 | 1929 − 1930 | z=0.026 (V=7800km/s) |
[81] [82] [80] |
NGC 7619 | 1929 | z=0.012 (V=3779km/s) |
Using redshift measurments, NGC 7619 was the highest at the time of measurement. At the time of announcement, it was not yet accepted as a general guide to distance, however, later in the year, Edwin Hubble described redshift in relation to distance, leading to a seachange, and having this being accepted as an inferred distance. [83] [84] [81] |
NGC 584 (Dreyer nebula 584) | 1921 − 1929 | z=0.006 (V=1800km/s) |
At the time, nebula had yet to be accepted as independant galaxies. However, in 1923, galaxies were generally recognized as external to the Milky Way. [83] [81] [85] [86] [87] [88] [72] |
M104 (NGC 4594) | 1913 − 1921 | z=0.004 (V=1180km/s) |
This was the second galaxy whose redshift was determined; the first being Andromeda - which is approaching us and thus cannot have its redshift used to infer distance. Both were measured by Vesto Melvin Slipher. At this time, nebula had yet to be accepted as independant galaxies. NGC 4594 was originally measured as 1000km/s, then refined to 1100, and then to 1180 in 1916. [81] [85] [88] |
M81 | antiquity - 20th century
|
11.8 Mly (z=-0.10) | This is the lower bound, as it is remotest galaxy observable with the naked-eye. It is 12 million light-years away. Redshift cannot be used to infer distance, because it's moving toward us faster than cosmological expansion. |
Messier 101 | 1930 - | Using the pre-1950's Cepheid measurements, M101 was one of the most distant so measured. | |
Triangulum Galaxy | 1924 - 1930 | In 1924, Edwin Hubble announced the distance to M33 Triangulum. | |
Andromeda Galaxy | 1923 - 1924 | In 1923, Edwin Hubble measured the distance to Andromeda, and settled the question whether there were galaxies, or was everything in the Milky Way. | |
Small Magellanic Cloud | 1913 - 1923 | This was the first intergalactic distance measured. In 1913, Ejnar Hertzsprung measures the distance to SMC using Cepheid variables. | |
|
- A1689-zD1, discovered in 2008, with z=7.6, does not appear on this list because it has not been confirmed with a spectroscopic redshift.
- Abell 68 c1 and Abell 2219 c1, discovered in 2007, with z=9, do not appear on this list because they have not been confirmed. [89]
- IOK4 and IOK5, discovered in 2007, with z=7, do not appear on this list because they have not been confirmed with a spectroscopic redshift.
- Abell 1835 IR1916, discovered in 2004, with z=10.0, does not appear on this list because its claimed redshift is disputed. Some follow-up observations have failed to find the object at all.
- STIS 123627+621755, discovered in 1999, with z=6.68, does not appear on this list because its redshift was based on an erroneous interpretation of an oxygen emission line as a hydrogen emission line. [90] [91] [92]
- BR1202-0725 LAE, discovered in 1998 at z=5.64 does not appear on the list because it was not definitively pinned. BR1202-0725 (QSO 1202-07) refers to a quasar that the Lyman alpha emitting galaxy is near. The quasar itself lies at z=4.6947 [46] [49]
- BR2237-0607 LA1 and BR2237-0607 LA2 were found at z=4.55 while investigating around the quasar BR2237-0607 in 1996. Neither of these appear on the list because they were not definitively pinned down at the time. The quasar itself lies at z=4.558 [93] [94]
- Two absorption dropouts in the spectrum of quasar BR 1202-07 (QSO 1202-0725, BRI 1202-0725, BRI1202-07) were found, one in early 1996, another later in 1996. Neither of these appear on the list because they were not definitively pinned down at the time. The early one was at z=4.38, the later one at z=4.687, the quasar itself lies at z=4.695 [45] [95] [96] [97] [98]
- In 1986, a gravitationally lensed galaxy forming a blue arc was found lensed by galaxy cluster CL 2224-02 (C12224 in some references). However, its redshift was only determined in 1991, at z=2.237, by which time, it would no longer be the most distant galaxy. [99] [100]
- An absorbtion drop was discovered in 1985 in the light spectrum of quasar PKS 1614+051 at z=3.21 This does not appear on the list because it was not definitively fixed down. At the time, it was claimed to be the first non-QSO galaxy found beyond redshift 3. The quasar itself is at z=3.197 [45] [101]
- From 1964 to 1997, the title of most distant object in the universe were held by a succession of quasars. [52] That list is available at list of quasars.
- In 1958, cluster Cl 0024+1654 and Cl 1447+2619 were estimated to have redshifts of z=0.29 and z=0.35 respectively. However, no galaxy was spectroscopically determined. [68]
Interacting galaxies
Galaxies | Data | Notes |
---|---|---|
The Magellanic Clouds are being tidally disrupted by the Milky Way Galaxy, resulting in the Magellanic Stream drawing a tidal tail away from the LMC and SMC, and the Magellanic Bridge drawing material from the clouds to our galaxy. | ||
The smaller galaxy NGC 5195 is tidally interacting with the larger Whirlpool Galaxy, creating its grand design spiral galaxy architecture. | ||
These three galaxies interact with each other and draw out tidal tails, which are dense enough to form star clusters. The bridge of gas between these galaxies is known as Arp's Loop. [102] | ||
NGC 6872 is a barred spiral galaxy with a grand design spiral nucleus, and distinct well-formed outer barred-spiral architecture, caused by tidal interaction with satellite galaxy IC 4970. | ||
Tadpole Galaxy | The Tadpole Galaxy tidally interacted with another galaxy in a close encounter, and remains slightly disrupted, with a long tidal tail. |
Galaxies | Data | Notes |
---|---|---|
Arp 299 (NGC 3690 & IC 694) | These two galaxies have recently collided and are now both barred irregular galaxies. |
Galaxies | Data | Notes |
---|---|---|
Mayall's Object | This is a pair of galaxies, one which punched through the other, resulting in a ring galaxy. |
Galaxy mergers
Galaxies | Data | Notes |
---|---|---|
Antennae Galaxies (Ringtail Galaxy, NGC 4038 & NGC 4039, Arp 244) | 2 galaxies | Two spiral galaxies currently starting a collision, tidally interacting, and in the process of merger. |
Butterfly Galaxies (Siamese Twins Galaxies, NGC 4567 & NGC 4568) | 2 galaxies | Two spiral galaxies in the process of starting to merge. |
Mice Galaxies (NGC 4676, NGC 4676A & NGC 4676B, IC 819 & IC 820, Arp 242) | 2 galaxies | Two spiral galaxies currently tidally interacting and in the process of merger. |
NGC 520 | 2 galaxies | Two spiral galaxies undergoing collision, in the process of merger. |
NGC 2207 and IC 2163 (NGC 2207 & IC 2163) | 2 galaxies | These are two spiral galaxies starting to collide, in the process of merger. |
NGC 5090 and NGC 5091 (NGC 5090 & NGC 5091) | 2 galaxies | These two galaxies are in the process of colliding and merging. |
NGC 7318 (Arp 319, NGC 7318A & NGC 7318B) | 2 galaxies | These are two starting to collide |
Four galaxies in CL0958+4702 | 4 galaxies | These four near-equals at the core of galaxy cluster CL 0958+4702 are in the process of merging. [103] |
Galaxy protocluster LBG-2377 | z=3.03 | This was announced as the most distant galaxy merger ever discovered. It is expected that this proto-cluster of galaxies will merge together to form a brightest cluster galaxy, and become the core of a larger galaxy cluster. [104] [105] |
Galaxy | Data | Notes |
---|---|---|
Starfish Galaxy (NGC 6240, IC 4625) | This recently coalesced galaxy still has two prominent nuclei. |
Disintegrating Galaxy | Consuming Galaxy | Notes |
---|---|---|
Canis Major Dwarf Galaxy | Milky Way Galaxy | The Monoceros Ring is thought to be the tidal tail of the disrupted CMa dg. |
Virgo Stellar Stream | Milky Way Galaxy | This is thought to be a completely disrupted dwarf galaxy. |
Sagittarius Dwarf Elliptical Galaxy | Milky Way Galaxy | M54 is thought to the be core of this dwarf galaxy. |
Defunct Galaxy | Galaxy | Notes |
---|---|---|
Omega Centauri | Milky Way Galaxy | This is now categorized a globular cluster of the Milky Way. However, it is considered the core of a dwarf galaxy that the Milky Way cannibalized. [14] |
Mayall II | Andromeda Galaxy | This is now categorized a globular cluster of Andromeda. However, it is considered the core of a dwarf galaxy that Andromeda cannibalized. |
Lists of galaxies
- Local Group
- List of nearest galaxies
- List of polar-ring galaxies
- List of spiral galaxies
- List of quasars
Citations
- ^ Hayden Planetarium, Local Large-Scale Structure
- ^ Sky and Telescope, New Stars in a Galaxy's Wake, 28 Sept 2007
- ^ NASA, 'Orphan' Stars Found in Long Galaxy Tail, 09.20.07
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- ^ a b c d Curious About Astronomy: Can any galaxies be seen with the naked eye?
- ^ Astronomy Knowledge Base, Magellanic Cloud, UOttawa
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- ^ SEDS, The Small Magellanic Cloud, SMC
- ^ SEDS, Messier 31
- ^ a b c UPI, Black hole found in Omega Centauri ,April 10, 2008 at 2:07 PM
- ^ University Lowbrow Astronomers Naked Eye Observer’s Guide
- ^ a b Farthest Naked Eye Object
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- ^ SEDS, Messier 81
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- ^ SEDS, Seyfert Galaxies
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- ^ SEDS, Lord Rosse's drawings of M51, his "Question Mark" "Spiral Nebula"
- ^ Sub-parsec-scale structure and evolution in Centaurus AIntroduction ; Tue Nov 26 15:27:29 PST 1996
- ^ a b The 2006 Giant Flare in PKS 2155-304 and Unidentified TeV Sources
- ^ a b abstracts
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- ^ Chandra Proposal ID #01700041 ; ACIS Imaging of the Starburst Galaxy M82 ; 09/1999 ; 1999cxo..prop..362M
- ^ Starburst Galaxies: Proceedings of a Workshop (page 27) ; 2001 ; ISBN 354041472X
- ^ The Independent, Science & technology: WHAT ON EARTH?, 28 Feb 2004
- ^ ESO Press Release 25/00 , Most Massive Spiral Galaxy Known in the Universe , 8 December 2000
- ^ arXiv, Star Clusters in Local Group Galaxies, 28 Dec 1999
- ^ Nature 443, 186-188 (14 September 2006), A galaxy at a redshift z = 6.96, doi:10.1038/nature05104;
- ^ a b arXiv, Star Forming Galaxies at z > 5 , Fri, 4 Apr 2008
- ^ a b PASJ: Publ. Astron. Soc. Japan 57, 165-182, 2005 February 25; The SUBARU Deep Field Project: Lymanα Emitters at a Redshift of 6.6
- ^ a b BBC News, Most distant galaxy detected, Tuesday, 25 March, 2003, 14:28 GMT
- ^ a b SpaceRef, Subaru Telescope Detects the Most Distant Galaxy Yet and Expects Many More, Monday, March 24, 2003
- ^ arXiv, The Discovery of Two Lyman$\alpha$ Emitters Beyond Redshift 6 in the Subaru Deep Field, 28 Feb 2003
- ^ New Scientist, New record for Universe's most distant object, 17:19 14 March 2002
- ^ BBC News, Far away stars light early cosmos, Thursday, 14 March, 2002, 11:38 GMT
- ^ The Astrophysical Journal Letters, 568:L75–L79, 2002 April 1 ; A Redshift z = 6.56 Galaxy behind the Cluster Abell 370 ; DOI: 10.1086/340424
- ^ K2.1 HCM 6A — Discovery of a redshift z = 6.56 galaxy lying behind the cluster Abell 370
- ^ The Astrophysical Journal Letters, 522:L9–L12, 1999 September 1, An Extremely Luminous Galaxy at z = 5.74
- ^ a b c d e f g h i j k l m n o p q r Publications of the Astronomical Society of the Pacific, 111: 1475-1502, 1999 December ; SEARCH TECHNIQUES FOR DISTANT GALAXIES ; INTRODUCTION
- ^ a b New York Times, Peering Back in Time, Astronomers Glimpse Galaxies Aborning, October 20, 1998
- ^ a b Astronomy Picture of the Day, A Baby Galaxy, March 24, 1998
- ^ a b Template:PDF arXiv, A Galaxy at z = 5.34, 11 Mar 1998
- ^ a b A New Most Distant Object: z = 5.34
- ^ Astronomy Picture of the Day, Behind CL1358+62: A New Farthest Object, July 31, 1997
- ^ Astrophysical Journal Letters v.486, p.L75 ; 09/1997, A Pair of Lensed Galaxies at z=4.92 in the Field of CL 1358+62 ; 1997ApJ...486L..75F ; 10.1086/310844
- ^ a b c d e "Astrophysics and Space Science" 1999, 269/270, 165-181 ; GALAXIES AT HIGH REDSHIFT - 8. Z > 5 GALAXIES ; Garth Illingworth
- ^ a b Template:PDF The Astrosynthetic Journal, 999:L1-L4, 1994 February 31 ; KECK OBSERVATIONS OF THE MOST DISTANT GALAXY: 8C1435+63 AT z=4.25
- ^ arXiv, Ultra-Steep Spectrum Radio Galaxies at Hy Redshifts, 18 Oct 1999
- ^ a b New Scientist, Galaxy hunters close to the edge, 05 November 1994
- ^ Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 401, no. 2, p. L69-L73 ; Hubble Space Telescope imaging of distant galaxies - 4C 41.17 at Z = 3.8 ; 1992ApJ...401L..69M
- ^ a b Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 363, Nov. 1, 1990, p. 21-39 ; 4C 41.17 - A radio galaxy at a redshift of 3.8 ; 1990ApJ...363...21C
- ^ Science News, Farthest galaxy is cosmic question - 0902+34 April 23, 1988
- ^ Science News, Two distant galaxies provide new puzzles - 4c 41.17, B2 09021+34, Nov 14, 1992
- ^ Template:PDF arXiv, DUST IN HIGH REDSHIFT RADIO GALAXIES ANDTHE EARLY EVOLUTION OF SPHEROIDAL GALAXIES, 21 Sep 1995
- ^ Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 324, Jan. 1, 1988, p. L1-L3. Peculiar morphology of the high-redshift radio galaxies 3C 13 and 3C 256 in subarcsecond seeing ; 1988ApJ...324L...1L
- ^ a b Royal Astronomical Society, Monthly Notices (ISSN 0035-8711), vol. 211, Dec. 15, 1984, p. 833-855 ; Stellar populations in distant radio galaxies ; 1984MNRAS.211..833L
- ^ Journal of the British Astronomical Association, vol.94, no.3, p.97-103 ; The Most Distant Galaxies ; 1984JBAA...94...97L
- ^ SKY AND TELESCOPE V. 65, P. 321, 1983 ; 3C324 - Most Distant Galaxy ; 1983S&T....65..321S
- ^ Astrophysical Journal, Part 1, vol. 231, July 15, 1979, p. 307-311 ; Spectrophotometry of three high-redshift radio galaxies - 3C 6.1, 3C 265, and 3C 352 ; 07/1979 ; 1979ApJ...231..307S ; doi 10.1086/157194
- ^ The Discovery of Radio Galaxies and Quasars
- ^ Annual Review of Astronomy and Astrophysics Vol. 31: 639-688 (September 1993) ; High Redshift Radio Galaxies ; (doi:10.1146/annurev.aa.31.090193.003231)
- ^ a b c Astrophysical Journal, vol. 133, p.355 ; The Ability of the 200-INCH Telescope to Discriminate Between Selected World Models ; 1961ApJ...133..355S
- ^ Monthly Notices of the Royal Astronomical Society, Vol. 113, p.658 ; The law of red shifts (George Darwin Lecture) Hubble, E. P. ; 1953MNRAS.113..658H
- ^ OBSERVATIONAL TESTS OF WORLD MODELS ; 6.1. Local Tests for Linearity of the Redshift-Distance Relation ; Annu. Rev. Astron. Astrophys. 1988. 26: 561-630
- ^ Astron. J., 61, 97-162 (1956) ; Redshifts and magnitudes of extragalactic nebulae ; 1956AJ.....61...97H
- ^ a b c The Observatory, Vol. 73, p. 97-103 (1953) ; 1953 May 8 meeting of the Royal Astronomical Society ; 1953Obs....73...97.
- ^ Astronomical Society of the Pacific Leaflets, Vol. 7, p.393 ; From Atoms to Galaxies ; 1958ASPL....7..393M
- ^ a b Astrophysical Journal, vol. 83, p.10 ; The Apparent Radial Velocities of 100 Extra-Galactic Nebulae ; 1936ApJ....83...10H
- ^ THE FIRST 50 YEARS AT PALOMAR: 1949-1999 ; The Early Years of Stellar Evolution, Cosmology, and High-Energy Astrophysics ; 5.2.1. The Mount Wilson Years ; Annu. Rev. Astron. Astrophys. 1999. 37: 445-486
- ^ a b Journal of the Royal Astronomical Society of Canada, Vol. 26, p.180 ; Notes and Queries (Doings at Mount Wilson-Ritchey's Photographic Telescope-Infra-red Photographic Plates) ; 1932JRASC..26..180C
- ^ Astrophysical Journal, vol. 74, p.35 ; Apparent Velocity-Shifts in the Spectra of Faint Nebulae ; 07/1931 ; 1931ApJ....74...35H
- ^ Astrophysical Journal, vol. 74, p.43 ; The Velocity-Distance Relation among Extra-Galactic Nebulae ; 1931ApJ....74...43H
- ^ a b Astronomical Society of the Pacific Leaflets, Vol. 1, p.149 ; The Large Apparent Velocities of Extra-Galactic Nebulae ; 1931ASPL....1..149H
- ^ a b Astrophys. J., 71, 351-356 (1930) The Rayton short-focus spectrographic objective. 1930ApJ....71..351H
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- ^ a b From the Proceedings of the National Academy of Sciences ; Volume 15 : March 15, 1929 : Number 3 ; THE LARGE RADIAL VELOCITY OF N. G. C. 7619 ; January 17, 1929
- ^ THE JOURNAL OF THE ROYAL ASTRONOMICAL SOCIETY OF CANADA / JOURNAL DE LA SOCIÉTÉ ROYALE D'ASTRONOMIE DU CANADA ; Vol. 83, No.6 December 1989 Whole No. 621 ; EDWIN HUBBLE 1889-1953
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- ^ New York Times, DREYER NEBULA NO. 584 INCONCEIVABLY DISTANT; Dr. Slipher Says the Celestial Speed Champion Is 'Many Millions of Light Years' Away. ; January 19, 1921, Wednesday
- ^ a b New York Times, NEBULA DREYER BREAKS ALL SKY SPEED RECORDS; Portion of the Constellation of Cetus Is Rushing Along at Rate of 1,240 Miles a Second. ; January 18, 1921, Tuesday
- ^ New Scientist, Baby galaxies sighted at dawn of universe, 22:34 10 July 2007
- ^ Lawrence Livermore National Laboratory, Lab scientists revoke status of space object
- ^ arXiv, The Unusual Spectral Energy Distribution of a Galaxy Previously Reported to be at Redshift 6.68, 30 Nov 2000
- ^ BBC News, Hubble spies most distant object, Thursday, April 15, 1999
- ^ arXiv, Detection of Lyman-alpha Emitting Galaxies at Redshift z=4.55, 21 Jun 1996
- ^ Template:PDF 31/01/02 ; DAZLE NEAR IR NARROW BAND IMAGER ; DAZLE-IoA-Doc-0002
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- ^ New Scientist, Trouble at the edge of time, 21 October 1995
- ^ Astronomy and Astrophysics, v.316, p.33-42, High resolution observations of the QSO BR 1202-0725: deuterium and ionic abundances at redshifts above z=4, 1996A&A...316...33W
- ^ Astrophysical Journal Letters v.456, p.L13, A Redshift 4.38 MG II Absorber toward BR 1202-0725, 1996ApJ...456L..13E
- ^ R.A.S. MONTHLY NOTICES V.263, NO. 3/AUG1, P. 628, 1993 ; The Nature of Star Formation in Lensed Galaxies at High Redshift ; 1993MNRAS.263..628S
- ^ Gravitational Lenses II: Galaxy Clusters as Lenses
- ^ Astronomical Journal (ISSN 0004-6256), vol. 93, June 1987, p. 1318-1325 ; A galaxy at a redshift of 3.215 - Further studies of the PKS 1614+051 system ; 1987AJ.....93.1318D
- ^ Sky and Telescope, Stars in the Middle of Nowhere, 10 January 2008
- ^ Sky and Telescope, Galaxy Monster Mash, 9 August 2007
- ^ ABC News, Found! Oldest galaxy pile-up, Wednesday, 9 April 2008
- ^ The Astrophysical Journal Letters, 681:L57–L60, 2008 July 10 ; A Candidate Brightest Protocluster Galaxy at z = 3.03
External links
- Wolfram Research : Scientific Astronomer Documentation - Brightest Galaxies
- 1956 Catalogue of Galaxy Redshifts : Redshifts and magnitudes of extragalactic nebulae by Milton L. Humason, Nicholas U. Mayall, Allan Sandage
- 1936 Catalogue of Galaxy Redshifts : The Apparent Radial Velocities of 100 Extra-Galactic Nebulae by Milton L. Humason
- 1925 Catalogue of Galaxy Redshifts: [ ] by Vesto Slipher
- (1917) First Catalogue of Galaxy Redshifts: Nebulae by Vesto Slipher