Astronomy:HD 37646
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Short description: Double star in the constellation Auriga
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Auriga[1] |
| Right ascension | 05h 41m 20.97707s[2] |
| Declination | +29° 29′ 14.6958″[2] |
| Apparent magnitude (V) | 6.43[3] |
| Characteristics | |
| Evolutionary stage | main sequence[4] |
| Spectral type | B8IV[5] |
| U−B color index | −0.39[3] |
| B−V color index | −0.11[3] |
| Variable type | eclipsing binary[6] |
| Astrometry | |
| Radial velocity (Rv) | 18.00±4.3[7] km/s |
| Proper motion (μ) | RA: +15.94[2] mas/yr Dec.: −26.95[2] mas/yr |
| Parallax (π) | 5.37 ± 0.81[2] mas |
| Distance | approx. 610 ly (approx. 190 pc) |
| Absolute magnitude (MV) | +0.11[1] |
| Details | |
| Mass | 3.43[4] M☉ |
| Radius | 2.21[8] R☉ |
| Luminosity | 177[4] L☉ |
| Surface gravity (log g) | 4.35[8] cgs |
| Temperature | 12,589[4] K |
| Rotational velocity (v sin i) | 130[9] km/s |
| Age | 157[10] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 37646 is an eclipsing binary in the northern constellation of Auriga. The companion has only been detected by very shallow eclipses[6] and by the radial velocity variations it produces in the primary star.[11]
In addition to the spectroscopic companion, the 7th-magnitude star HD 37647 shares a common proper motion and parallax with HD 37646. The pair have an angular separation of 26.005″.[5]
References
- ↑ 1.0 1.1 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A XHIP record for this object at VizieR.
- ↑ 2.0 2.1 2.2 2.3 2.4 van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, doi:10.1051/0004-6361:20078357, Bibcode: 2007A&A...474..653V
- ↑ 3.0 3.1 3.2 Tolbert, Charles Ray (May 1964), "A UBV Study of 94 Wide Visual Binaries", Astrophysical Journal 139: 1105, doi:10.1086/147852, Bibcode: 1964ApJ...139.1105T
- ↑ 4.0 4.1 4.2 4.3 Zorec, J.; Royer, F. (2012). "Rotational velocities of A-type stars. IV. Evolution of rotational velocities". Astronomy and Astrophysics 537: A120. doi:10.1051/0004-6361/201117691. Bibcode: 2012A&A...537A.120Z.
- ↑ 5.0 5.1 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, doi:10.1111/j.1365-2966.2008.13596.x, Bibcode: 2008MNRAS.389..869E
- ↑ 6.0 6.1 Shi, Xiang-Dong; Qian, Sheng-Bang; Li, Lin-Jia (2022). "New Pulsating Stars Detected in EA-type Eclipsing-binary Systems Based on TESS Data". The Astrophysical Journal Supplement Series 259 (2): 50. doi:10.3847/1538-4365/ac59b9. Bibcode: 2022ApJS..259...50S.
- ↑ Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters 32 (11): 759–771. doi:10.1134/S1063773706110065. Bibcode: 2006AstL...32..759G.
- ↑ 8.0 8.1 Yu, Jie; Khanna, Shourya; Themessl, Nathalie; Hekker, Saskia; Dréau, Guillaume; Gizon, Laurent; Bi, Shaolan (2023). "Revised Extinctions and Radii for 1.5 Million Stars Observed by APOGEE, GALAH, and RAVE". The Astrophysical Journal Supplement Series 264 (2): 41. doi:10.3847/1538-4365/acabc8. Bibcode: 2023ApJS..264...41Y.
- ↑ Abt, Helmut A.; Levato, Hugo; Grosso, Monica (July 2002), "Rotational Velocities of B Stars", The Astrophysical Journal 573 (1): 359–365, doi:10.1086/340590, Bibcode: 2002ApJ...573..359A
- ↑ Gontcharov, G. A. (2012). "Dependence of kinematics on the age of stars in the solar neighborhood". Astronomy Letters 38 (12): 771. doi:10.1134/S1063773712120031. Bibcode: 2012AstL...38..771G.
- ↑ Tkachenko, Andrew; Pavlovski, Krešimir; Serebriakova, Nadezhda; Bowman, Dominic M.; Ijspeert, Luc; Gebruers, Sarah; Southworth, John (2024). "Observational mapping of the mass discrepancy in eclipsing binaries: Selection of the sample and its photometric and spectroscopic properties". Astronomy and Astrophysics 683: A252. doi:10.1051/0004-6361/202347793. Bibcode: 2024A&A...683A.252T.
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