HD 28375: Difference between revisions

HD 28375
Observation data; Epoch J2000 Equinox J2000
Constellation	Taurus
Right ascension	04h 28m 32.11967s
Declination	+01° 22′ 50.9578″
Apparent magnitude (V)	5.532
Characteristics
Spectral type	B3V
U−B color index	-0.55
B−V color index	-0.10
Astrometry
Radial velocity (Rv)	18.0 ± 4.3 km/s
Proper motion (μ)	RA: 17.81 mas/yr ; Dec.: -21.50 mas/yr
Parallax (π)	8.52 ± 0.35 mas
Distance	380 ± 20 ly ; (117 ± 5 pc)
Details
Surface gravity (log g)	4 cgs
Temperature	13000 K
Rotational velocity (v sin i)	13 ± 3 km/s
Other designations
	BD+01° 757, HD 28375, HIP 20884, HR 1415, SAO 111845
Database references
SIMBAD	data

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HD 28375 is a star in the zodiac constellation of Taurus. Its apparent magnitude is 5.53.^[2] Based on parallax estimates made by the Hipparcos spacecraft, the star is located fairly close, about 380 light-years (117 parsecs) away.^[1]

HD 28375 has a spectrum matching that of an B-type main-sequence star. Its effective temperature is about 13000 K. An infrared excess has been detected, indicating the presence of a circumstellar disk. The dust would have a temperature of about 119 K, located about 67 astronomical units away from the star.^[3]

HD 28375 is also known as 44 Eridani, although the name has fallen out of use because constellations were redrawn, placing the star out of Eridanus and into Taurus.

References

^ ^a ^b ^c ^d ^e ^f van Leeuwen, F.; et al. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.
^ ^a ^b Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H.
^ ^a ^b ^c ^d Liu, Qiong; Wang, Tinggui; Jiang, Peng (2014). "Bright Debris Disk Candidates Detected with Theakari/far-Infrared Surveyor". The Astronomical Journal. 148: 3. arXiv:1308.5593. Bibcode:2014AJ....148....3L. doi:10.1088/0004-6256/148/1/3.
^ ^a ^b Johnson, H. L. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99. Bibcode:1966CoLPL...4...99J.
^ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065.
^ Bragança, G. A.; Daflon, S.; Cunha, K.; Bensby, T.; Oey, M. S.; Walth, G. (2012). "Projected Rotational Velocities and Stellar Characterization of 350 B Stars in the Nearby Galactic Disk". The Astronomical Journal. 144 (5): 130. arXiv:1208.1674. Bibcode:2012AJ....144..130B. doi:10.1088/0004-6256/144/5/130.

This main-sequence-star-related article is a stub. You can help Wikipedia by expanding it.

[HIP-1] ^ ^a ^b ^c ^d ^e ^f van Leeuwen, F.; et al. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.

[TYC2-2] Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H.

[Liu-3] Liu, Qiong; Wang, Tinggui; Jiang, Peng (2014). "Bright Debris Disk Candidates Detected with Theakari/far-Infrared Surveyor". The Astronomical Journal. 148: 3. arXiv:1308.5593. Bibcode:2014AJ....148....3L. doi:10.1088/0004-6256/148/1/3.

[UBVRI-4] Johnson, H. L. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99. Bibcode:1966CoLPL...4...99J.

[RV-5] Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065.

[Braganca-6] Bragança, G. A.; Daflon, S.; Cunha, K.; Bensby, T.; Oey, M. S.; Walth, G. (2012). "Projected Rotational Velocities and Stellar Characterization of 350 B Stars in the Nearby Galactic Disk". The Astronomical Journal. 144 (5): 130. arXiv:1208.1674. Bibcode:2012AJ....144..130B. doi:10.1088/0004-6256/144/5/130.

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@@ Line 1: / Line 1: @@
+{{Starbox begin|name=HD 28375}}
-{{starbox short
+{{Starbox observe
-|constell= [[Taurus (constellation)|Taurus]]
+|epoch=[[J2000]]
-|name= 44 Eridani
+|constell=[[Taurus (constellation)|Taurus]]
-|type= B3V <ref name=SIMBAD>SIMBAD, [http://simbad.u-strasbg.fr/simbad/sim-id?Ident=HIP+20884&submit=SIMBAD+search 44 Eridani] (accessed 8 January 2015)</ref>
+|ra={{RA|04|28|32.11967}}<ref name=HIP>{{cite journal|title=Validation of the new Hipparcos reduction|url=http://www.aanda.org/index.php?option=com_article&access=bibcode&Itemid=129&bibcode=2007A%2526A...474..653VFUL|author=van Leeuwen, F.|display-authors=etal|journal=Astronomy and Astrophysics|volume=474|issue=2|pages=653–664|date=2007|arxiv=0708.1752|bibcode=2007A&A...474..653V|doi=10.1051/0004-6361:20078357}}</ref>
-|ra=   {{RA|04|28|32.11967}} <ref name=SIMBAD/>
-|dec=  {{DEC|+1|22|50.9578}} <ref name=SIMBAD/>
+|dec={{DEC|+01|22|50.9578}}<ref name=HIP/>
+|appmag_v=5.532<ref name=TYC2>{{cite journal|title=The Tycho-2 catalogue of the 2.5 million brightest stars|author=Høg, E.|display-authors=etal|date=2000|journal=Astronomy and Astrophysics|volume=355|pages=L27–L30|bibcode=2000A&A...355L..27H}}</ref>
 }}
+{{Starbox character
-'''44 Eridani''' ('''44 Eri''') is a [[blue giant]] [[star]] in the [[constellation]] [[Taurus (constellation)|Taurus]]. Its [[apparent magnitude]] is 5.53.
+|class=B3V<ref name=Liu>{{cite journal|bibcode=2014AJ....148....3L|doi=10.1088/0004-6256/148/1/3|arxiv=1308.5593|title=Bright Debris Disk Candidates Detected with Theakari/far-Infrared Surveyor|journal=The Astronomical Journal|volume=148|pages=3|year=2014|last1=Liu|first1=Qiong|last2=Wang|first2=Tinggui|last3=Jiang|first3=Peng}}</ref>
+|b-v=-0.10<ref name=UBVRI>{{cite journal|title=UBVRIJKL Photometry of the Bright Stars|author1=Johnson, H. L.|journal=Communications of the Lunar and Planetary Laboratory|volume=4|pages=99|date=1966|bibcode=1966CoLPL...4...99J}}</ref>
+|u-b=-0.55<ref name=UBVRI/>
+}}
+{{Starbox astrometry
+|radial_v=18.0 ± 4.3<ref name=RV>{{cite journal|url=http://adsabs.harvard.edu/abs/2006AstL...32..759G|title=Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system|author=Gontcharov, G. A.|date=2006|journal=Astronomy Letters|volume=32|issue=11|pages=759–771|bibcode=2006AstL...32..759G|doi=10.1134/S1063773706110065|arxiv=1606.08053}}</ref>
+|prop_mo_ra=17.81<ref name=HIP/>
+|prop_mo_dec=-21.50<ref name=HIP/>
+|parallax=8.52
+|p_error=0.35
+|parallax_footnote=<ref name=HIP/>
+}}
+{{Starbox detail
+|mass=
+|radius=
+|temperature=13000<ref name=Liu/>
+|luminosity=
+|gravity=4<ref name=Liu/>
+|metal_fe=
+|rotational_velocity=13 ± 3<ref name=Braganca>{{cite journal|bibcode=2012AJ....144..130B|doi=10.1088/0004-6256/144/5/130|arxiv=1208.1674|title=Projected Rotational Velocities and Stellar Characterization of 350 B Stars in the Nearby Galactic Disk|journal=The Astronomical Journal|volume=144|issue=5|pages=130|year=2012|last1=Bragança|first1=G. A.|last2=Daflon|first2=S.|last3=Cunha|first3=K.|last4=Bensby|first4=T.|last5=Oey|first5=M. S.|last6=Walth|first6=G.}}</ref>
+|age_gyr=
+}}
+{{Starbox catalog
+|names={{odlist|BD=+01° 757|HD=28375|HIP=20884|HR=1415|SAO=111845}}
+}}
+{{Starbox reference
+|Simbad=HD+28375
+}}
+{{Starbox end}}
+'''HD 28375''' is a [[star]] in the zodiac [[constellation]] of [[Taurus (constellation)|Taurus]]. Its [[apparent magnitude]] is 5.53.<ref name=TYC2/> Based on [[stellar parallax|parallax]] estimates made by the [[Hipparcos]] spacecraft, the star is located fairly close, about 380 [[light-year]]s (117 [[parsec]]s) away.<ref name=HIP/>
+HD 28375 has a [[spectrum]] matching that of an [[B-type main-sequence star]].  Its [[effective temperature]] is about 13000 [[Kelvin|K]]. An [[infrared excess]] has been detected, indicating the presence of a [[circumstellar disk]]. The dust would have a temperature of about 119 K, located about 67 [[astronomical unit]]s away from the [[star]].<ref name=Liu/>
+HD 28375 is also known as '''44 Eridani''', although the name has fallen out of use because constellations were redrawn, placing the star out of [[Eridanus (constellation)|Eridanus]] and into Taurus.
 ==References==
@@ Line 14: / Line 49: @@
 [[Category:Taurus (constellation)]]
-[[Category:B-type giants]]
+[[Category:B-type main-sequence stars]]
 [[Category:Flamsteed objects|Eridani, 44]]
+[[Category:Durchmusterung objects]]
+[[Category:Henry Draper Catalogue objects|028375]]
+[[Category:Hipparcos objects|020884]]
+[[Category:HR objects|1415]]
-{{giant-star-stub}}
+{{main-star-stub}}

Observation data Epoch J2000 Equinox J2000
Constellation	Taurus
Right ascension	04^h 28^m 32.11967^s^[1]
Declination	+01° 22′ 50.9578″^[1]
Apparent magnitude (V)	5.532^[2]
Characteristics
Spectral type	B3V^[3]
U−B color index	-0.55^[4]
B−V color index	-0.10^[4]
Astrometry

Radial velocity (R_v)	18.0 ± 4.3^[5] km/s
Proper motion (μ)	RA: 17.81^[1] mas/yr Dec.: -21.50^[1] mas/yr
Parallax (π)	8.52 ± 0.35 mas^[1]
Distance	380 ± 20 ly (117 ± 5 pc)

Details

Surface gravity (log g)	4^[3] cgs
Temperature	13000^[3] K
Rotational velocity (v sin i)	13 ± 3^[6] km/s

Other designations
BD+01° 757, HD 28375, HIP 20884, HR 1415, SAO 111845
Database references
SIMBAD	data