  | |
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Columba[1] |
| Right ascension | 06h 04m 20.26526s[2] |
| Declination | −32° 10′ 20.7449″[2] |
| Apparent magnitude (V) | 5.65[1] |
| Characteristics | |
| Evolutionary stage | main sequence[2] |
| Spectral type | B2V[3] |
| U−B color index | −0.82[4] |
| B−V color index | −0.186±0.003[1] |
| Astrometry | |
| Radial velocity (Rv) | +93.0±3.7[5] km/s |
| Proper motion (μ) | RA: −16.439[2] mas/yr Dec.: +121.584[2] mas/yr |
| Parallax (π) | 3.4602±0.0631 mas[2] |
| Distance | 940 ± 20 ly (289 ± 5 pc) |
| Absolute magnitude (MV) | −1.78[1] |
| Details | |
| Mass | 6.9+0.75 −0.68[6] M☉ |
| Radius | 3.90[7] R☉ |
| Luminosity | 1621[1] 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 | |
| 72 G. Col[9], CD−32°1008, FK5 41534, GC 7708, HD 41534, HIP 28756, HR 2149, SAO 196459, PPM 282235, CCDM J06043-3210AB, WDS J06043-3210AB[10] | |
| 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.[1] The distance to this system is approximately 940 light-years based on parallax,[2] 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[1] 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 g 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. XHIP record for this object at VizieR.
- ^ a b c d e f g Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ 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.
