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{{citation | last1=Reiners | first1=Ansgar | title=Rotation- and temperature-dependence of stellar latitudinal differential rotation | journal=Astronomy and Astrophysics | volume=446 | issue=1 |date=January 2006 | pages=267–277 | doi=10.1051/0004-6361:20053911 | bibcode=2006A&A...446..267R |arxiv = astro-ph/0509399 | s2cid=8642707 }}</ref>
Added refs
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{{Starbox begin
{{No footnotes|date=September 2010}}
| name = HD 90089
{{Starbox begin |
}}
name=HD 90089 }}
{{Starbox observe |
{{Starbox observe
| constell = [[Camelopardalis]]
epoch=J2000 |
| epoch = [[J2000.0]]
ra=10<sup>h</sup> 31<sup>m</sup> 04.6638<sup>s</sup> |
| equinox = [[J2000.0]] (ICRS)
dec= +82° 33′ 30.915″ |
appmag_v=5.25<ref name=aa555_A11/> |
| ra = {{RA|10|31|04.6638}}<ref name = GaiaDR2/>
| dec = {{DEC|+82|33|30.915}}<ref name = GaiaDR2/>
constell=[[Camelopardalis (constellation)|Camelopardalis]] }}
| appmag_v = 5.252 ± 0.009<ref name=aa555_A11/>
{{Starbox character |
}}
class=F2V<ref name=aa555_A11/> |
{{Starbox character
r-i = |
| class = F4 V kF2 mF2<ref name = Grey2003/>
v-r = |
b-v = 0.40<ref name=aa555_A11/> |
| b-v = 0.37<ref name = Johnson1966/>
u-b = -0.05 |
| u-b = –0.05<ref name = Johnson1966/>
}}
variable=[[Variable star]]<br />[http://webviz.u-strasbg.fr/viz-bin/VizieR-S?NSV%204864 NSV 4864] }}
{{Starbox astrometry |
{{Starbox astrometry
radial_v=7 |
| radial_v = 7.9 ± 0.9<ref name = Gontcharov2006/>
prop_mo_ra=-79.21 |
| prop_mo_ra = –65.395<ref name = GaiaDR2/>
prop_mo_dec=20.43 |
| prop_mo_dec = +12.982<ref name = GaiaDR2/>
parallax=46.54 |
| parallax = 43.9944
p_error=0.55 |
| p_error = 0.2712
absmag_v=3.60<ref name=Reiners2006/> }}
| parallax_footnote = <ref name = GaiaDR2/>
| absmag_v = 3.60<ref name=Reiners2006/>
}}
{{Starbox detail
{{Starbox detail
| mass = 1.29<ref name = David2015/>
| mass=
| radius = {{val|1.40|0.03|0.06}}<ref name = GaiaDR2/>
| radius=
| luminosity_bolometric=2.840<ref name=aa555_A11/>
| luminosity = 3.36 ± 0.02<ref name = GaiaDR2/>
| temperature=6,170<ref name=aa555_A11/>
| temperature= {{val|6602|159|69|fmt=commas}}<ref name = GaiaDR2/>
| metal_fe=&minus;0.26<ref name=aa555_A11/>
| metal_fe = –0.26<ref name=aa555_A11/>
| gravity=4.32<ref name=aa555_A11/>
| gravity = 4.43 ± 0.14<ref name = David2015/>
| rotation=56.2<ref name=aa555_A11/>
| rotational_velocity = 56.2<ref name=aa555_A11/>
| age_gyr=0.30<ref name=aa555_A11/> }}
| age_gyr = 1.074<ref name = David2015/>
}}
{{Starbox catalog |
{{Starbox catalog
names=[[Bonner Durchmusterung|BD]]+83° 297, [[FK5]] 911, [[Hipparcos Catalogue|HIP]] 51502, [[Bright Star Catalogue|HR]] 4084, [[Smithsonian Astrophysical Observatory Star Catalog|SAO]] 1714. }}
| names = {{odlist|BD = +83° 297|FK5 = 911|HIP = 51502|HR = 4084|SAO = 1714|HD = 90089|GJ = 392.1|WDS = J10311+8234A}}
{{Starbox reference |
}}
Simbad=HD+90089
{{Starbox reference
| ARICNS = }}
| Simbad=HD+90089
}}
{{Starbox end}}
{{Starbox end}}
'''HD 90089''' is a suspected [[variable star]] in the constellation [[Camelopardalis]].


'''HD 90089 (HR 4084 ; Gliese 392.1)''' is a star located in the northern [[circumpolar constellation]] [[Camelopardalis]]. With an [[apparent magnitude]] of 5.25<ref name=aa555_A11/>, it is faintly visible to the [[naked eye]] under ideal conditions. This star is located relatively close at a distance of 74 [[light years]]<ref name = GaiaDR2/>, but is drifting away at a rate of almost 8 km/s.<ref name = Gontcharov2006/>
An [[infrared excess]] has been detected around this star, most likely indicating the presence of a [[circumstellar disk]] at a radius of 145&nbsp;[[Astronomical Unit|AU]]. The temperature of this dust is 30&nbsp;K.<ref name=aa555_A11/>

HD 90089 is an F4 [[main-sequence star]] with the [[calcium K-line]] and metallic lines of an F2 star.<ref name = Grey2003/> At present it has 1.29 times the [[mass of the Sun]]<ref name = David2015/> and 1.4 times its radius. It radiates at 3.36 times the [[luminosity of the Sun]] from its [[photosphere]] at an [[effective temperature]] of {{val|6602|fmt=commas|ul=K}}<ref name = GaiaDR2/>, which gives it a yellowish-white hue. HD 90089's exact age depends on the method, with X-ray giving it a young age of only 300 [[million years]].<ref name=aa555_A11/> David et. al gave it an age of 1.1 [[billion years]]<ref name = David2015/>, significantly older than the previous solution; it spins rapidly with a [[projected rotational velocity]] of 56.2 km/s<ref name=aa555_A11/>, and has an M0 companion seperated 13" away.<ref name = Mason2001/> An [[infrared excess]] has been detected around this star, most likely indicating the presence of a [[circumstellar disk]] at a radius of 145&nbsp;[[Astronomical Unit|AU]]. The temperature of this dust is 30&nbsp;K.<ref name=aa555_A11/>


== References ==
== References ==
{{reflist|refs=
{{reflist|refs=


<ref name=aa555_A11>{{cite journal
<ref name = GaiaDR2>{{Cite DR2|1146337324038514176}}</ref>

| display-authors=1
<ref name = Johnson1966>{{cite journal |last1=Johnson |first1=H. L. |last2=Mitchell |first2=R. I. |last3=Iriarte |first3=B. |last4=Wisniewski |first4=W. Z. |title=UBVRIJKL Photometry of the Bright Stars |journal=Communications of the Lunar and Planetary Laboratory |date=1966 |volume=4 |pages=99–110 |bibcode=1966CoLPL...4...99J}}</ref>
| last1=Eiroa | first1=C.

| last2=Marshall | first2=J. P.
<ref name = Gontcharov2006>{{cite journal |last1=Gontcharov |first1=G. A. |title=Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system |journal=Astronomy Letters |date=November 2006 |volume=32 |issue=11 |pages=759–771 |doi=10.1134/S1063773706110065 |issn=1063-7737 |bibcode=2006AstL...32..759G}}</ref>
| last3=Mora | first3=A.

| last4=Montesinos | first4=B.
<ref name=aa555_A11>{{cite journal | display-authors=1 | last1=Eiroa | first1=C. | last2=Marshall | first2=J. P. | last3=Mora | first3=A. | last4=Montesinos | first4=B. | last5=Absil | first5=O. | last6=Augereau | first6=J. Ch. | last7=Bayo | first7=A. | last8=Bryden | first8=G. | last9=Danchi | first9=W. | last10=del Burgo | first10=C. | last11=Ertel | first11=S. | last12=Fridlund | first12=M. | last13=Heras | first13=A. M. | last14=Krivov | first14=A. V. | last15=Launhardt | first15=R.| last16=Liseau | first16=R. | last17=Löhne | first17=T. | last18=Maldonado | first18=J. | last19=Pilbratt | first19=G. L. | last20=Roberge | first20=A. | last21=Rodmann | first21=J. | last22=Sanz-Forcada | first22=J. | last23=Solano | first23=E. | last24=Stapelfeldt | first24=K. | last25=Thébault | first25=P. | last26=Wolf | first26=S. | last27=Ardila | first27=D. | last28=Arévalo | first28=M. | last29=Beichmann | first29=C. | last30=Faramaz | first30=V. | last31=González-García | first31=B. M. | last32=Gutiérrez | first32=R. | last33=Lebreton | first33=J. | last34=Martínez-Arnáiz | first34=R. | last35=Meeus | first35=G. | last36=Montes | first36=D. | last37=Olofsson | first37=G. | last38=Su | first38=K. Y. L. | last39=White | first39=G. J. | last40=Barrado | first40=D. | last41=Fukagawa | first41=M. | last42=Grün | first42=E. | last43=Kamp | first43=I. | last44=Lorente | first44=R. | last45=Morbidelli | first45=A. | last46=Müller | first46=S. | last47=Mutschke | first47=H. | last48=Nakagawa | first48=T. | last49=Ribas | first49=I. | last50=Walker | first50=H. | title=DUst around NEarby Stars. The survey observational results | journal=Astronomy & Astrophysics | volume=555 | page=A11 | date=July 2013 | doi=10.1051/0004-6361/201321050 | bibcode=2013A&A...555A..11E | arxiv=1305.0155| s2cid=377244 }}</ref>
| last5=Absil | first5=O.
| last6=Augereau | first6=J. Ch.
| last7=Bayo | first7=A.
| last8=Bryden | first8=G.
| last9=Danchi | first9=W.
| last10=del Burgo | first10=C.
| last11=Ertel | first11=S.
| last12=Fridlund | first12=M.
| last13=Heras | first13=A. M.
| last14=Krivov | first14=A. V.
| last15=Launhardt | first15=R.
| last16=Liseau | first16=R.
| last17=Löhne | first17=T.
| last18=Maldonado | first18=J.
| last19=Pilbratt | first19=G. L.
| last20=Roberge | first20=A.
| last21=Rodmann | first21=J.
| last22=Sanz-Forcada | first22=J.
| last23=Solano | first23=E.
| last24=Stapelfeldt | first24=K.
| last25=Thébault | first25=P.
| last26=Wolf | first26=S.
| last27=Ardila | first27=D.
| last28=Arévalo | first28=M.
| last29=Beichmann | first29=C.
| last30=Faramaz | first30=V.
| last31=González-García | first31=B. M.
| last32=Gutiérrez | first32=R.
| last33=Lebreton | first33=J.
| last34=Martínez-Arnáiz | first34=R.
| last35=Meeus | first35=G.
| last36=Montes | first36=D.
| last37=Olofsson | first37=G.
| last38=Su | first38=K. Y. L.
| last39=White | first39=G. J.
| last40=Barrado | first40=D.
| last41=Fukagawa | first41=M.
| last42=Grün | first42=E.
| last43=Kamp | first43=I.
| last44=Lorente | first44=R.
| last45=Morbidelli | first45=A.
| last46=Müller | first46=S.
| last47=Mutschke | first47=H.
| last48=Nakagawa | first48=T.
| last49=Ribas | first49=I.
| last50=Walker | first50=H.
| title=DUst around NEarby Stars. The survey observational results
| journal=Astronomy & Astrophysics
| volume=555 | page=A11 | date=July 2013
| doi=10.1051/0004-6361/201321050 | bibcode=2013A&A...555A..11E | arxiv=1305.0155
| s2cid=377244 }}</ref>


<ref name=Reiners2006>{{citation | last1=Reiners | first1=Ansgar | title=Rotation- and temperature-dependence of stellar latitudinal differential rotation | journal=Astronomy and Astrophysics | volume=446 | issue=1 |date=January 2006 | pages=267–277 | doi=10.1051/0004-6361:20053911 | bibcode=2006A&A...446..267R |arxiv = astro-ph/0509399 | s2cid=8642707 }}</ref>
<ref name=Reiners2006>{{citation | last1=Reiners | first1=Ansgar | title=Rotation- and temperature-dependence of stellar latitudinal differential rotation | journal=Astronomy and Astrophysics | volume=446 | issue=1 |date=January 2006 | pages=267–277 | doi=10.1051/0004-6361:20053911 | bibcode=2006A&A...446..267R |arxiv = astro-ph/0509399 | s2cid=8642707 }}</ref>

<ref name = Grey2003>{{cite journal |last1=Gray |first1=R. O. |last2=Corbally |first2=C. J. |last3=Garrison |first3=R. F. |last4=McFadden |first4=M. T. |last5=Robinson |first5=P. E. |title=Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 Parsecs: The Northern Sample. I. |journal=The Astronomical Journal |date=October 2003 |volume=126 |issue=4 |pages=2048–2059 |doi=10.1086/378365 |issn=0004-6256 |bibcode=2003AJ....126.2048G |arxiv=astro-ph/0308182 |doi-access=free}}</ref>

<ref name = David2015>{{cite journal |last1=David |first1=Trevor J. |last2=Hillenbrand |first2=Lynne A. |title=The Ages of Early-type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets |journal=The Astrophysical Journal |date=12 May 2015 |volume=804 |pages=146 |doi=10.1088/0004-637X/804/2/146 |issn=0004-637X |bibcode=2015ApJ...804..146D |arxiv=1501.03154 |doi-access=free}}</ref>

<ref name = Mason2001>{{cite journal |last1=Mason |first1=Brian D. |last2=Wycoff |first2=Gary L. |last3=Hartkopf |first3=William I. |last4=Douglass |first4=Geoffrey G. |last5=Worley |first5=Charles E. |title=The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog |journal=The Astronomical Journal |date=December 2001 |volume=122 |issue=6 |pages=3466–3471 |doi=10.1086/323920 |issn=0004-6256 |bibcode=2001AJ....122.3466M |doi-access=free}}</ref>


}}
}}
==External Links==
* [http://webviz.u-strasbg.fr/viz-bin/VizieR-S?HR%204084 HR 4084]
* [http://webviz.u-strasbg.fr/viz-bin/VizieR-S?HR%204084 HR 4084]
* [http://aladin.u-strasbg.fr/AladinPreview?-c=10+31+04.6638%2B82+33+30.915&ident=NSV++4864&submit=Aladin+previewer Image HD 90089]
* [http://aladin.u-strasbg.fr/AladinPreview?-c=10+31+04.6638%2B82+33+30.915&ident=NSV++4864&submit=Aladin+previewer Image HD 90089]


{{Stars of Camelopardalis}}
{{Stars of Camelopardalis}}

[[Category:Camelopardalis (constellation)]]
[[Category:Camelopardalis (constellation)]]
[[Category:Henry Draper Catalogue objects|090089]]
[[Category:Henry Draper Catalogue objects|090089]]
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[[Category:Suspected variables]]
[[Category:Suspected variables]]
[[Category:Durchmusterung objects]]
[[Category:Durchmusterung objects]]


{{var-star-stub}}
{{main-star-stub}}

Revision as of 23:58, 31 December 2021

HD 90089
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Camelopardalis
Right ascension 10h 31m 04.6638s[1]
Declination +82° 33′ 30.915″[1]
Apparent magnitude (V) 5.252 ± 0.009[2]
Characteristics
Spectral type F4 V kF2 mF2[3]
U−B color index –0.05[4]
B−V color index 0.37[4]
Astrometry
Radial velocity (Rv)7.9 ± 0.9[5] km/s
Proper motion (μ) RA: –65.395[1] mas/yr
Dec.: +12.982[1] mas/yr
Parallax (π)43.9944 ± 0.2712 mas[1]
Distance74.1 ± 0.5 ly
(22.7 ± 0.1 pc)
Absolute magnitude (MV)3.60[6]
Details
Mass1.29[7] M☉
Radius1.40+0.03
−0.06[1] R☉
Luminosity3.36 ± 0.02[1] L☉
Surface gravity (log g)4.43 ± 0.14[7] cgs
Temperature6,602+159
−69[1] K
Metallicity [Fe/H]–0.26[2] dex
Rotational velocity (v sin i)56.2[2] km/s
Age1.074[7] Gyr
Other designations
BD+83° 297, FK5 911, GJ 392.1, HD 90089, HIP 51502, HR 4084, SAO 1714, WDS J10311+8234A
Database references
SIMBADdata

HD 90089 (HR 4084 ; Gliese 392.1) is a star located in the northern circumpolar constellation Camelopardalis. With an apparent magnitude of 5.25[2], it is faintly visible to the naked eye under ideal conditions. This star is located relatively close at a distance of 74 light years[1], but is drifting away at a rate of almost 8 km/s.[5]

HD 90089 is an F4 main-sequence star with the calcium K-line and metallic lines of an F2 star.[3] At present it has 1.29 times the mass of the Sun[7] and 1.4 times its radius. It radiates at 3.36 times the luminosity of the Sun from its photosphere at an effective temperature of 6,602 K[1], which gives it a yellowish-white hue. HD 90089's exact age depends on the method, with X-ray giving it a young age of only 300 million years.[2] David et. al gave it an age of 1.1 billion years[7], significantly older than the previous solution; it spins rapidly with a projected rotational velocity of 56.2 km/s[2], and has an M0 companion seperated 13" away.[8] An infrared excess has been detected around this star, most likely indicating the presence of a circumstellar disk at a radius of 145 AU. The temperature of this dust is 30 K.[2]

References

  1. ^ a b c d e f g h i j Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  2. ^ a b c d e f g Eiroa, C.; et al. (July 2013). "DUst around NEarby Stars. The survey observational results". Astronomy & Astrophysics. 555: A11. arXiv:1305.0155. Bibcode:2013A&A...555A..11E. doi:10.1051/0004-6361/201321050. S2CID 377244.
  3. ^ a b Gray, R. O.; Corbally, C. J.; Garrison, R. F.; McFadden, M. T.; Robinson, P. E. (October 2003). "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 Parsecs: The Northern Sample. I." The Astronomical Journal. 126 (4): 2048–2059. arXiv:astro-ph/0308182. Bibcode:2003AJ....126.2048G. doi:10.1086/378365. ISSN 0004-6256.
  4. ^ a b Johnson, H. L.; Mitchell, R. I.; Iriarte, B.; Wisniewski, W. Z. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99–110. Bibcode:1966CoLPL...4...99J.
  5. ^ a b Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. ISSN 1063-7737.
  6. ^ Reiners, Ansgar (January 2006), "Rotation- and temperature-dependence of stellar latitudinal differential rotation", Astronomy and Astrophysics, 446 (1): 267–277, arXiv:astro-ph/0509399, Bibcode:2006A&A...446..267R, doi:10.1051/0004-6361:20053911, S2CID 8642707
  7. ^ a b c d e David, Trevor J.; Hillenbrand, Lynne A. (12 May 2015). "The Ages of Early-type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets". The Astrophysical Journal. 804: 146. arXiv:1501.03154. Bibcode:2015ApJ...804..146D. doi:10.1088/0004-637X/804/2/146. ISSN 0004-637X.
  8. ^ Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (December 2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog". The Astronomical Journal. 122 (6): 3466–3471. Bibcode:2001AJ....122.3466M. doi:10.1086/323920. ISSN 0004-6256.

External Links

Retrieved from "https://en.wikipedia.org/w/index.php?title=HD_90089&oldid=1063058618"