HD 41534
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Columba |
| Right ascension | 06h 04m 20.26492s[1] |
| Declination | −32° 10′ 20.7434″[1] |
| Apparent magnitude (V) | 5.65[2] |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | B2V[3] |
| U−B color index | −0.82[4] |
| B−V color index | −0.186±0.003[2] |
| Astrometry | |
| Radial velocity (Rv) | +93.0±3.7[5] km/s |
| Proper motion (μ) | RA: −16.144[1] mas/yr Dec.: +121.467[1] mas/yr |
| Parallax (π) | 3.4507 ± 0.0857 mas[1] |
| Distance | 950 ± 20 ly (290 ± 7 pc) |
| Absolute magnitude (MV) | −1.78[2] |
| Details | |
| Mass | 6.9+0.75 −0.68[6] M☉ |
| Radius | 3.90[7] R☉ |
| Luminosity | 1621.15[2] L☉ |
| Surface gravity (log g) | 4.0±0.25[6] cgs |
| Temperature | 20,000±1,000[6] K |
| Rotational velocity (v sin i) | 122[8] km/s |
| Age | 14+13 −8[6] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 41534 is a binary star[11] system in the southern constellation of Columba. It is dimply visible to the naked eye with a combined apparent visual magnitude of 5.65.[2] The distance to this system is approximately 950 light-years based on parallax,[1] and it is receding from the Sun with a radial velocity of +93 km/s.[5] This is a runaway star system with an unusually high peculiar velocity of 187.6+12.2
−13.8 km/s.[12] It is thought to have been ejected from the OB association Sco OB 1 approximately 14 million years ago.[13]
The primary component is a B-type main-sequence star with a stellar classification of B2V.[3] It displays microvariability with an amplitude of 0.0086 in magnitude and a frequency of 0.11316 cycles per day.[14] The star is an estimated 14[6] million years old with a high rate of spin, showing a projected rotational velocity of 122.[8] It has seven[6] times the mass of the Sun and about four[7] times the Sun's radius. HD 41534 is radiating over 1,600[2] times the luminosity of the Sun from its photosphere at an effective temperature of 20,000 K.[6]
References
[edit]- ^ a b c d e f 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.
- ^ a b c d e f 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.
- ^ a b Houk, Nancy (1979), Michigan catalogue of two-dimensional spectral types for the HD stars, vol. 3, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan, Bibcode:1982mcts.book.....H.
- ^ Hoffleit, Dorrit; Warren, W. H. Jr. (November 1995), "Bright Star Catalogue", VizieR On-line Data Catalog (5th Revised ed.), Bibcode:1995yCat.5050....0H HR 2149
- ^ a b Kharchenko, N. V.; et al. (2007), "Astrophysical supplements to the ASCC-2.5: Ia. Radial velocities of ~55000 stars and mean radial velocities of 516 Galactic open clusters and associations", Astronomische Nachrichten, 328 (9): 889–896, arXiv:0705.0878, Bibcode:2007AN....328..889K, doi:10.1002/asna.200710776, S2CID 119323941.
- ^ a b c d e f g Gullikson, Kevin; et al. (2016), "The Close Companion Mass-ratio Distribution of Intermediate-mass Stars", The Astronomical Journal, 152 (2): 40, arXiv:1604.06456, Bibcode:2016AJ....152...40G, doi:10.3847/0004-6256/152/2/40, S2CID 119179065.
- ^ 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.
- ^ a b Balona, L. A. (1975), "Equivalent widths and rotational velocities of southern early-type stars", Memoirs of the Royal Astronomical Society, 78: 51, Bibcode:1975MmRAS..78...51B.
- ^ HD 41534 is Gould's 72nd of Columba in his Uranometria Argentina. Some astronomers wrongly called it as simply "72 Col".
- Gould, Benjamin Apthorp (1879), Uranometria Argentina, vol. 1, Observatorio Nacional Argentino, p. 172
- ^ "HD 41534". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-01-01.
- ^ 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.
- ^ 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.
- ^ van Albada, T. S. (May 1961), "72 Columbae, a B3V run-away star from the association I Scorpii", Bulletin of the Astronomical Institutes of the Netherlands, 15: 301, Bibcode:1961BAN....15..301V.
- ^ Koen, Chris; Eyer, Laurent (2002), "New periodic variables from the Hipparcos epoch photometry", Monthly Notices of the Royal Astronomical Society, 331 (1): 45–59, arXiv:astro-ph/0112194, Bibcode:2002MNRAS.331...45K, doi:10.1046/j.1365-8711.2002.05150.x, S2CID 10505995.
