Beta Camelopardalis: Difference between revisions

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{{redirects here|Beta Cam|the video technology|Betacam}}
⚫
{{Short description|Star in the constellation Camelopardalis}}

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{{Short description|Yellow-hued star in the constellation Camelopardalis}}
{{Starbox begin
{{Starbox begin
| name=β Camelopardalis
| name=β Camelopardalis
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| mass=6.5<ref name=leonid/>
| mass=6.5<ref name=leonid/>
| radius={{Val|58|13}}<ref name=vanBelle2009/>
| radius={{Val|58|13}}<ref name=vanBelle2009/>
| luminosity=1,592<ref name=McDonald2012>{{cite journal|bibcode= 2012MNRAS.427..343M|title= Fundamental parameters and infrared excesses of Hipparcos stars|journal= Monthly Notices of the Royal Astronomical Society|volume= 427|pages= 343–357|last1= McDonald|first1= I.|last2= Zijlstra|first2= A. A.|last3= Boyer|first3= M. L.|year= 2012|doi= 10.1111/j.1365-2966.2012.21873.x|arxiv = 1208.2037 |s2cid= 118665352}}</ref>
| luminosity=1,592<ref name=McDonald2012>{{cite journal|bibcode= 2012MNRAS.427..343M|title= Fundamental parameters and infrared excesses of Hipparcos stars|journal= Monthly Notices of the Royal Astronomical Society|volume= 427|pages= 343–357|last1= McDonald|first1= I.|last2= Zijlstra|first2= A. A.|last3= Boyer|first3= M. L.|year= 2012|issue= 1|doi= 10.1111/j.1365-2966.2012.21873.x|arxiv = 1208.2037 |s2cid= 118665352}}</ref>
| temperature=5,300<ref name=leonid/>
| temperature=5,300<ref name=leonid/>
| metal_fe=−0.06<ref>{{cite journal|bibcode=2012MNRAS.423.3268K|title=Accurate luminosities from the oxygen λ7771-4 Å triplet and the fundamental parameters of F-G supergiants|journal=Monthly Notices of the Royal Astronomical Society|volume=423|issue=4|pages=3268|last1=Kovtyukh|first1=V. V.|last2=Gorlova|first2=N. I.|last3=Belik|first3=S. I.|year=2012|doi=10.1111/j.1365-2966.2012.21117.x|arxiv = 1204.4115 |s2cid=118683158}}</ref>
| metal_fe=−0.06<ref>{{cite journal|bibcode=2012MNRAS.423.3268K|title=Accurate luminosities from the oxygen λ7771-4 Å triplet and the fundamental parameters of F-G supergiants|journal=Monthly Notices of the Royal Astronomical Society|volume=423|issue=4|pages=3268|last1=Kovtyukh|first1=V. V.|last2=Gorlova|first2=N. I.|last3=Belik|first3=S. I.|year=2012|doi=10.1111/j.1365-2966.2012.21117.x|arxiv = 1204.4115 |s2cid=118683158}}</ref>
| gravity=1.79<ref name=leonid/>
| gravity=1.79<ref name=leonid/>
| rotational_velocity=11.7<ref name=dasilva>{{cite journal|bibcode=2015ApJ...801...54R|title=On the Nature of Rapidly Rotating Single Evolved Stars|journal=The Astrophysical Journal|volume=801|pages=54|last1=Rodrigues Da Silva|first1=R.|last2=Canto Martins|first2=B. L.|last3=De Medeiros|first3=J. R.|year=2015|doi=10.1088/0004-637X/801/1/54|arxiv = 1503.03447 |s2cid=119271718}}</ref>
| rotational_velocity=11.7<ref name=dasilva>{{cite journal|bibcode=2015ApJ...801...54R|title=On the Nature of Rapidly Rotating Single Evolved Stars|journal=The Astrophysical Journal|volume=801|pages=54|last1=Rodrigues Da Silva|first1=R.|last2=Canto Martins|first2=B. L.|last3=De Medeiros|first3=J. R.|year=2015|issue=1 |doi=10.1088/0004-637X/801/1/54|arxiv = 1503.03447 |s2cid=119271718}}</ref>
| age_myr=53<ref name=leonid/>
| age_myr=53<ref name=leonid/>
}}
}}
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}}{{starbox sources|HIP|CCDM|HR}}
}}{{starbox sources|HIP|CCDM|HR}}
{{Starbox end}}
{{Starbox end}}
'''Beta Camelopardalis''', [[Latinisation of names|Latinised]] from β Camelopardalis, is the brightest [[star]] in the [[Northern celestial hemisphere|northern]] [[constellation]] of [[Camelopardalis]]. It is bright enough to be faintly visible to the naked eye, having an [[apparent visual magnitude]] of 4.02.<ref name=ducati/> Based upon an annual [[stellar parallax|parallax shift]] of 3.74&nbsp;[[milliarcsecond|mas]] as seen from Earth, it is located roughly 870&nbsp;[[light-year]]s from the [[Sun]]. It is moving closer with a [[radial velocity]] of −190&nbsp;km/s<ref name=Gontcharov2006/> and is most likely a single<ref name=mnras389_2_869/> star.
'''Beta Camelopardalis''', [[Latinisation of names|Latinised]] from β Camelopardalis, is the brightest [[star]] in the [[Northern celestial hemisphere|northern]] [[constellation]] of [[Camelopardalis]]. It is bright enough to be faintly visible to the naked eye, having an [[apparent visual magnitude]] of 4.02.<ref name=ducati/> Based upon an annual [[stellar parallax|parallax shift]] of 3.74&nbsp;[[milliarcsecond|mas]] as seen from Earth, it is located roughly 870&nbsp;[[light-year]]s from the [[Sun]]. It is moving closer with a [[radial velocity]] of −1.90&nbsp;km/s<ref name=Gontcharov2006/> and is most likely a single<ref name=mnras389_2_869/> star.


This is a yellow-hued [[G-type star|G-type]] [[supergiant]]/[[bright giant]] with a [[stellar classification]] of G1&nbsp;Ib–IIa.<ref name=leonid/> It is an estimated 60 million years old and is spinning with a [[projected rotational velocity]] of 11.7&nbsp;km/s.<ref name=dasilva/> This is an unusually high rate of rotation for an [[stellar evolution|evolved]] star of this type. One possible explanation is that it may have engulfed a nearby [[giant planet]], such as a [[hot Jupiter]].<ref name=Silva>{{cite journal | title=On the Nature of Rapidly Rotating Single Evolved Stars | last1=Rodrigues da Silva | first1=R. | last2=Canto Martins | first2=B. L. | last3=De Medeiros | first3=J. R. | journal=The Astrophysical Journal | volume=801 | issue=1 | id=54 | pages=6 | date=March 2015 | doi=10.1088/0004-637X/801/1/54 | bibcode=2015ApJ...801...54R | arxiv=1503.03447 | s2cid=119271718 }}</ref>
This is a yellow-hued [[G-type star|G-type]] [[supergiant]]/[[bright giant]] with a [[stellar classification]] of G1&nbsp;Ib–IIa.<ref name=leonid/> It is an estimated 60 million years old and is spinning with a [[projected rotational velocity]] of 11.7&nbsp;km/s.<ref name=dasilva/> This is an unusually high rate of rotation for an [[stellar evolution|evolved]] star of this type. One possible explanation is that it may have engulfed a nearby [[giant planet]], such as a [[hot Jupiter]].<ref name=Silva>{{cite journal | title=On the Nature of Rapidly Rotating Single Evolved Stars | last1=Rodrigues da Silva | first1=R. | last2=Canto Martins | first2=B. L. | last3=De Medeiros | first3=J. R. | journal=The Astrophysical Journal | volume=801 | issue=1 | id=54 | pages=6 | date=March 2015 | doi=10.1088/0004-637X/801/1/54 | bibcode=2015ApJ...801...54R | arxiv=1503.03447 | s2cid=119271718 }}</ref>
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[[Category:G-type bright giants]]
[[Category:G-type bright giants]]
[[Category:Double stars]]
[[Category:Double stars]]
[[Category:Camelopardalis (constellation)]]
[[Category:Camelopardalis]]
[[Category:Bayer objects|Camelopardalis, Beta]]
[[Category:Bayer objects|Camelopardalis, Beta]]
[[Category:Durchmusterung objects|BD+60 0856]]
[[Category:Durchmusterung objects|BD+60 0856]]
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[[Category:Henry Draper Catalogue objects|031910]]
[[Category:Henry Draper Catalogue objects|031910]]
[[Category:Hipparcos objects|023522]]
[[Category:Hipparcos objects|023522]]
[[Category:HR objects|1603]]
[[Category:Bright Star Catalogue objects|1603]]

Latest revision as of 12:45, 25 December 2023

"Beta Cam" redirects here. For the video technology, see Betacam.
β Camelopardalis
Location of β Cam (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Camelopardalis
Right ascension 05h 03m 25.08963s[1]
Declination +60° 26′ 32.0895″[1]
Apparent magnitude (V) 4.02[2]
Characteristics
Spectral type G1Ib–IIa[3]
U−B color index +0.62[2]
B−V color index +0.93[2]
R−I color index +0.49[2]
Astrometry
Radial velocity (Rv)−1.90[4] km/s
Proper motion (μ) RA: −6.50[1] mas/yr
Dec.: −14.15[1] mas/yr
Parallax (π)3.74 ± 0.21 mas[1]
Distance870 ± 50 ly
(270 ± 20 pc)
Absolute magnitude (MV)−3.1[5]
Details
Mass6.5[3] M☉
Radius58±13[6] R☉
Luminosity1,592[7] L☉
Surface gravity (log g)1.79[3] cgs
Temperature5,300[3] K
Metallicity [Fe/H]−0.06[8] dex
Rotational velocity (v sin i)11.7[9] km/s
Age53[3] Myr
Other designations
β Cam, 10 Camelopardalis, BD+60°856, FK5 182, HD 31910, HIP 23522, HR 1603, SAO 13351, ADS 3615 A, WDS J05034+6027
Database references
SIMBADdata
Data sources:
Hipparcos Catalogue,
CCDM (2002),
Bright Star Catalogue (5th rev. ed.)

Beta Camelopardalis, Latinised from β Camelopardalis, is the brightest star in the northern constellation of Camelopardalis. It is bright enough to be faintly visible to the naked eye, having an apparent visual magnitude of 4.02.[2] Based upon an annual parallax shift of 3.74 mas as seen from Earth, it is located roughly 870 light-years from the Sun. It is moving closer with a radial velocity of −1.90 km/s[4] and is most likely a single[10] star.

This is a yellow-hued G-type supergiant/bright giant with a stellar classification of G1 Ib–IIa.[3] It is an estimated 60 million years old and is spinning with a projected rotational velocity of 11.7 km/s.[9] This is an unusually high rate of rotation for an evolved star of this type. One possible explanation is that it may have engulfed a nearby giant planet, such as a hot Jupiter.[11]

Beta Camelopardalis has 6.5[3] times the mass of the Sun and has expanded to around 58[6] the Sun's radius. The star is radiating 1,592[7] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 5,300 K.[3] It is a source of X-ray emission.[12]

β Cam has two visual[10] companions: a 7th-magnitude A5-class star at an angular separation of 84 arcseconds; and a 12th-magnitude star at 15 arcseconds.[13]

References[edit]

  1. ^ a b c d e Van Leeuwen, F. (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. S2CID 18759600.
  2. ^ a b c d e Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode:2002yCat.2237....0D.
  3. ^ a b c d e f g h Lyubimkov, Leonid S.; Lambert, David L.; Korotin, Sergey A.; Rachkovskaya, Tamara M.; Poklad, Dmitry B. (2015). "Carbon abundance and the N/C ratio in atmospheres of A-, F- and G-type supergiants and bright giants". Monthly Notices of the Royal Astronomical Society. 446 (4): 3447. arXiv:1411.2722. Bibcode:2015MNRAS.446.3447L. doi:10.1093/mnras/stu2299.
  4. ^ a b 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. S2CID 119231169.
  5. ^ Gray, David F.; Pugh, Teznie (2012). "The Third Signature of Granulation in Bright-giant and Supergiant Stars". The Astronomical Journal. 143 (4): 92. Bibcode:2012AJ....143...92G. doi:10.1088/0004-6256/143/4/92.
  6. ^ a b Van Belle, G. T.; et al. (2009). "Supergiant temperatures and linear radii from near-infrared interferometry". Monthly Notices of the Royal Astronomical Society. 394 (4): 1925. arXiv:0811.4239. Bibcode:2009MNRAS.394.1925V. doi:10.1111/j.1365-2966.2008.14146.x. S2CID 118372600.
  7. ^ a b McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (2012). "Fundamental parameters and infrared excesses of Hipparcos stars". Monthly Notices of the Royal Astronomical Society. 427 (1): 343–357. arXiv:1208.2037. Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x. S2CID 118665352.
  8. ^ Kovtyukh, V. V.; Gorlova, N. I.; Belik, S. I. (2012). "Accurate luminosities from the oxygen λ7771-4 Å triplet and the fundamental parameters of F-G supergiants". Monthly Notices of the Royal Astronomical Society. 423 (4): 3268. arXiv:1204.4115. Bibcode:2012MNRAS.423.3268K. doi:10.1111/j.1365-2966.2012.21117.x. S2CID 118683158.
  9. ^ a b Rodrigues Da Silva, R.; Canto Martins, B. L.; De Medeiros, J. R. (2015). "On the Nature of Rapidly Rotating Single Evolved Stars". The Astrophysical Journal. 801 (1): 54. arXiv:1503.03447. Bibcode:2015ApJ...801...54R. doi:10.1088/0004-637X/801/1/54. S2CID 119271718.
  10. ^ a b Eggleton, P. P.; Tokovinin, A. A. (September 2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869–879. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x. S2CID 14878976.
  11. ^ Rodrigues da Silva, R.; Canto Martins, B. L.; De Medeiros, J. R. (March 2015). "On the Nature of Rapidly Rotating Single Evolved Stars". The Astrophysical Journal. 801 (1): 6. arXiv:1503.03447. Bibcode:2015ApJ...801...54R. doi:10.1088/0004-637X/801/1/54. S2CID 119271718. 54.
  12. ^ Haakonsen, Christian Bernt; Rutledge, Robert E. (September 2009), "XID II: Statistical Cross-Association of ROSAT Bright Source Catalog X-ray Sources with 2MASS Point Source Catalog Near-Infrared Sources", The Astrophysical Journal Supplement, 184 (1): 138–151, arXiv:0910.3229, Bibcode:2009ApJS..184..138H, doi:10.1088/0067-0049/184/1/138, S2CID 119267456
  13. ^ Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog". The Astronomical Journal. 122 (6): 3466. Bibcode:2001AJ....122.3466M. doi:10.1086/323920.

External links[edit]

Retrieved from "https://en.wikipedia.org/w/index.php?title=Beta_Camelopardalis&oldid=1191739579"