HD 75063

This article is about a Velorum. For A Velorum, see HD 72108.
HD 75063
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Vela
Right ascension 08h 46m 01.64391s[1]
Declination −46° 02′ 29.5042″[1]
Apparent magnitude (V) 3.87[2]
Characteristics
Spectral type A1III[3] or A0 II[4]
B−V color index 0.015±0.029[2]
Astrometry
Radial velocity (Rv)+23.2±0.3[2] km/s
Proper motion (μ) RA: −12.82[1] mas/yr
Dec.: +4.23[1] mas/yr
Parallax (π)1.76 ± 0.14 mas[1]
Distance1,900 ± 100 ly
(570 ± 50 pc)
Absolute magnitude (MV)−4.89[2]
Details
Mass8.6±0.3[5] M☉
Radius4.5[6] R☉
Luminosity8,669.71[2] L☉
Temperature8,023[7] K
Rotational velocity (v sin i)30[8] km/s
Age30.6±2.6[5] Myr
Other designations
a Vel, CD–45°4517, HD 75063, HIP 43023, HR 3487, SAO 220422[9]
Database references
SIMBADdata

HD 75063 is a single[10] star in the southern constellation of Vela. It has the Bayer designation of a Velorum, while HD 75063 is the identifier from the Henry Draper Catalogue. This is a naked-eye star with an apparent visual magnitude of 3.87[2] and has a white hue. The star is located at a distance of approximately 1,900 light-years from the Sun based on parallax measurements and has an absolute magnitude of −4.89.[2] It is drifting further away with a radial velocity of +23 km/s.[2]

This object has been stellar classifications of A1III[3] and A0 II,[4] matching a massive A-type giant or bright giant star, respectively. It is an estimated 31[5] million years old and is spinning with a projected rotational velocity of 30 km/s.[8] The star has 8.6[5] times the mass of the Sun and around 4.5[6] times the Sun's radius. The star is radiating 8,670[2] times the Sun's luminosity from its photosphere at an effective temperature of 8,023 K.[7]

References

  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. Vizier catalog entry
  2. ^ a b c d e f g h i Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. S2CID 119257644.
  3. ^ a b Levato, O. H. (August 1972). "Rotational Velocities and Spectral Types of Some A-Type Stars". Publications of the Astronomical Society of the Pacific. 84 (500): 584. Bibcode:1972PASP...84..584L. doi:10.1086/129336.
  4. ^ a b Houk, Nancy (1978). Michigan catalogue of two-dimensional spectral types for the HD stars. Vol. 2. Ann Arbor: Dept. of Astronomy, University of Michigan. Bibcode:1978mcts.book.....H.
  5. ^ a b c d Tetzlaff, N.; et al. (January 2011). "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun". Monthly Notices of the Royal Astronomical Society. 410 (1): 190–200. arXiv:1007.4883. Bibcode:2011MNRAS.410..190T. doi:10.1111/j.1365-2966.2010.17434.x. S2CID 118629873.
  6. ^ a b Pasinetti Fracassini, L. E.; et al. (February 2001). "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)". Astronomy and Astrophysics. 367 (2) (Third ed.): 521–524. arXiv:astro-ph/0012289. Bibcode:2001A&A...367..521P. doi:10.1051/0004-6361:20000451. S2CID 425754.
  7. ^ a b McDonald, I.; et al. (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. ^ a b Royer, F.; et al. (May 2002). "Rotational velocities of A-type stars II. Measurement of vsini in the northern hemisphere". Astronomy & Astrophysics. 393: 897–912. arXiv:astro-ph/0205255. Bibcode:2002A&A...393..897R. doi:10.1051/0004-6361:20020943. S2CID 14070763.
  9. ^ "a Vel". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-01-22.
  10. ^ 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.

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