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HD 16004

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HD 16004
Observation data
EpochJ2000EquinoxJ2000
Constellation Andromeda
Right ascension 02h35m27.90126s[1]
Declination +39° 39′ 51.7705″[1]
Apparent magnitude(V) 6.26[2]
Characteristics
Spectral type B9.5 III HgMn[2]
U−Bcolor index −0.33[2]
B−Vcolor index −0.30[2]
Astrometry
Radial velocity(Rv)−6.8±1.1[3]km/s
Proper motion(μ)RA:+16.659[1]mas/yr
Dec.:−34.296[1]mas/yr
Parallax(π)4.9384 ± 0.1650mas[1]
Distance660 ± 20ly
(202 ± 7pc)
Absolute magnitude(MV)−0.36[4]
Details
Mass2.88[5]M☉
Radius3.274[6]R☉
Luminosity158[6]L☉
Surface gravity(logg)3.8[5]cgs
Temperature10,809[5]K
Metallicity[Fe/H]−0.17[5]dex
Rotational velocity(vsini)30[7]km/s
Age162[8]Myr
Other designations
BD+39°573,GC3093,HD16004,HIP12057,HR746,SAO55680,WDSJ02355+3940A[9]
Database references
SIMBADdata

HD 16004is blue-white huedstarin the northernconstellationofAndromeda.It is a challenge to see with the naked eye even under good viewing conditions, having anapparent visual magnitudeof 6.26.[2]Located approximately 660light-years(202parsecs) away from theSunbased onparallax,it is drifting closer with a heliocentricradial velocityof −7 km/s.[3]

This is achemically peculiarmercury-manganese star[10]with astellar classificationofB9.5 III HgMn.[2]It is an estimated 162 million years old and is spinning with aprojected rotational velocityof30km/s.[7]The star is radiating 158 times theluminosity of the Sunfrom itsphotosphereat aneffective temperatureof10,809K.

References

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  1. ^abcdeBrown, A. G. A.;et al. (Gaia collaboration) (August 2018)."GaiaData 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 sourceatVizieR.
  2. ^abcdefJaschek, M.; et al. (1980). "The absolute magnitude of the Hg-Mn stars".Astronomy and Astrophysics.81:142.Bibcode:1980A&A....81..142J.
  3. ^abGontcharov, 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.S2CID119231169.
  4. ^Westin, T. N. G. (1985). "The local system of early type stars - Spatial extent and kinematics".Astronomy and Astrophysics Supplement Series.60:99–134.Bibcode:1985A&AS...60...99W.
  5. ^abcdAnders, F.; Khalatyan, A.; Chiappini, C.; Queiroz, A. B.; Santiago, B. X.;Jordi, C.;Girardi, L.; Brown, A. G. A.; Matijevič, G.; Monari, G.; Cantat-Gaudin, T.; Weiler, M.; Khan, S.; Miglio, A.; Carrillo, I.; Romero-Gómez, M.; Minchev, I.; De Jong, R. S.; Antoja, T.; Ramos, P.; Steinmetz, M.; Enke, H. (2019). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18".Astronomy and Astrophysics.628:A94.arXiv:1904.11302.Bibcode:2019A&A...628A..94A.doi:10.1051/0004-6361/201935765.S2CID131780028.
  6. ^abMcDonald, I.; et al. (2017)."Fundamental parameters and infrared excesses of Hipparcos stars".Monthly Notices of the Royal Astronomical Society.471(1): 770–791.arXiv:1706.02208.Bibcode:2017MNRAS.471..770M.doi:10.1093/mnras/stx1433.S2CID73594365.
  7. ^abAbt, Helmut A.; et al. (2002)."Rotational Velocities of B Stars".The Astrophysical Journal.573(1): 359–365.Bibcode:2002ApJ...573..359A.doi:10.1086/340590.
  8. ^Gontcharov, G. A. (2012). "Dependence of kinematics on the age of stars in the solar neighborhood".Astronomy Letters.38(12): 771–782.arXiv:1606.08814.Bibcode:2012AstL...38..771G.doi:10.1134/S1063773712120031.S2CID118345778.
  9. ^"HD 16004".SIMBAD.Centre de données astronomiques de Strasbourg.Retrieved2020-07-07.
  10. ^Renson, P.; Manfroid, J. (2009)."Catalogue of Ap, HgMn and Am stars".Astronomy and Astrophysics.498(3): 961.Bibcode:2009A&A...498..961R.doi:10.1051/0004-6361/200810788.
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