Arp 7: Difference between revisions
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== External links == |
== External links == |
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* [https://ned.ipac.caltech.edu/level5/Arp/Arp_contents.html Full Arp Atlas] |
* [https://ned.ipac.caltech.edu/level5/Arp/Arp_contents.html Full Arp Atlas] |
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* [https://ned.ipac.caltech.edu/level5/Arp/Arp2.html Arp Atlas image of Arp 7] |
* [https://web.archive.org/web/20160304073601/https://ned.ipac.caltech.edu/level5/Arp/Arp2.html Arp Atlas image of Arp 7] |
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* [http://djm.cc/constellation.html Constellation Locator] |
* [http://djm.cc/constellation.html Constellation Locator] |
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* [http://simbad.u-strasbg.fr/simbad/ SIMBAD Astronomical Database] |
* [http://simbad.u-strasbg.fr/simbad/ SIMBAD Astronomical Database] |
Revision as of 13:32, 18 October 2016
ARP 7 | |
---|---|
Observation data (J2000 epoch) | |
Constellation | Hydra [1] |
Right ascension | 8h 50m 30.0s[2] |
Declination | −16° 37′ 00″[2] |
Redshift | 0.018356 ± 0.000027 (5503 ± 8 km/s)[3] |
Apparent magnitude (V) | 12.40[3] |
Characteristics | |
Type | SB(rs)bc [3] |
Apparent size (V) | 57.1″ × 52.53″ [3] |
Other designations | |
PGC 024836,[3] APG 7[2] |
Arp 7 (PGC 24836) is a spiral galaxy in the constellation Hydra.[1] Redshift-independent measurements of its distance vary widely, from 5.9 Mpc to 83.7 Mpc.[3] Its morphological classification is SB(rs)bc,[3] meaning it is a barred spiral galaxy with some ring-like structure.
Arp 7 was imaged by Halton Arp and included in his Atlas of Peculiar Galaxies under the category of 'split arm' galaxies.[4] Five other galaxies are also included in this section of the atlas: Arp 8 (NGC 497), Arp 9 (NGC 2523), Arp 10 (UGC 1775), Arp 11 (UGC 717), and Arp 12 (NGC 2608).
References
- ^ a b Seligman, Courtney. "Celestial Atlas: PCG Objects 24500 - 24999". Retrieved 2015-11-25.
- ^ a b c SIMBAD Astronomical Database. Retrieved 2015-11-25.
{{cite book}}
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ignored (help) - ^ a b c d e f g "NASA/IPAC Extragalactic Database". Results for ARP 007. Retrieved 2015-11-25.
- ^ Arp, Halton (1966). "Atlas of Peculiar Galaxies". Figure 1. Retrieved 2015-11-25.