HD 37646

HD 37646
Observation data; Epoch J2000 Equinox ICRS
Constellation	Auriga
Right ascension	05h 41m 20.97674s
Declination	+29° 29′ 14.6967″
Apparent magnitude (V)	6.43
Characteristics
Evolutionary stage	main sequence
Spectral type	B8IV
Apparent magnitude (G)	6.39
U−B color index	−0.39
B−V color index	−0.11
Variable type	eclipsing binary
Astrometry
Radial velocity (Rv)	18.00±4.3 km/s
Proper motion (μ)	RA: +15.145±0.068 mas/yr ; Dec.: −26.656±0.041 mas/yr
Parallax (π)	6.3659±0.0675 mas
Distance	512 ± 5 ly ; (157 ± 2 pc)
Absolute magnitude (MV)	+0.11
Details
Mass	3.43 M☉
Radius	2.21 R☉
Luminosity	177 L☉
Surface gravity (log g)	4.35 cgs
Temperature	12,589 K
Rotational velocity (v sin i)	130 km/s
Age	157 Myr
Other designations
	BD+29°953, HD 37646, HIP 26781, HR 1945, SAO 77393, Gaia DR3 3444230245708929920
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 and by the radial velocity variations it produces in the primary star.

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″.

References

1 2 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.
1 2 3 4 5 6 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.
1 2 3 Tolbert, Charles Ray (May 1964), "A UBV Study of 94 Wide Visual Binaries", Astrophysical Journal, 139: 1105, Bibcode:1964ApJ...139.1105T, doi:10.1086/147852
1 2 3 4 Zorec, J.; Royer, F. (2012). "Rotational velocities of A-type stars. IV. Evolution of rotational velocities". Astronomy and Astrophysics. 537: A120. arXiv:1201.2052. Bibcode:2012A&A...537A.120Z. doi:10.1051/0004-6361/201117691.
1 2 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
1 2 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. arXiv:2411.18854. Bibcode:2022ApJS..259...50S. doi:10.3847/1538-4365/ac59b9.
↑ 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. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.
1 2 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. arXiv:2206.00046. Bibcode:2023ApJS..264...41Y. doi:10.3847/1538-4365/acabc8.
↑ Abt, Helmut A.; Levato, Hugo; Grosso, Monica (July 2002), "Rotational Velocities of B Stars", The Astrophysical Journal, 573 (1): 359–365, Bibcode:2002ApJ...573..359A, doi:10.1086/340590
↑ Gontcharov, G. A. (2012). "Dependence of kinematics on the age of stars in the solar neighborhood". Astronomy Letters. 38 (12): 771. arXiv:1606.08814. Bibcode:2012AstL...38..771G. doi:10.1134/S1063773712120031.
↑ 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. arXiv:2312.14009. Bibcode:2024A&A...683A.252T. doi:10.1051/0004-6361/202347793.

External links

This binary or multiple star system–related article is a stub. You can help Wikipedia by adding missing information.

[xhip-1] 1 2 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.

[GaiaDR3-2] 1 2 3 4 5 6 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.

[aj139_1105-3] 1 2 3 Tolbert, Charles Ray (May 1964), "A UBV Study of 94 Wide Visual Binaries", Astrophysical Journal, 139: 1105, Bibcode:1964ApJ...139.1105T, doi:10.1086/147852

[zorec2012-4] 1 2 3 4 Zorec, J.; Royer, F. (2012). "Rotational velocities of A-type stars. IV. Evolution of rotational velocities". Astronomy and Astrophysics. 537: A120. arXiv:1201.2052. Bibcode:2012A&A...537A.120Z. doi:10.1051/0004-6361/201117691.

[mnras389_2_869-5] 1 2 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

[shi2022-6] 1 2 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. arXiv:2411.18854. Bibcode:2022ApJS..259...50S. doi:10.3847/1538-4365/ac59b9.

[Gontcharov-7] 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. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.

[yu2023-8] 1 2 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. arXiv:2206.00046. Bibcode:2023ApJS..264...41Y. doi:10.3847/1538-4365/acabc8.

[apj573_1_359-9] Abt, Helmut A.; Levato, Hugo; Grosso, Monica (July 2002), "Rotational Velocities of B Stars", The Astrophysical Journal, 573 (1): 359–365, Bibcode:2002ApJ...573..359A, doi:10.1086/340590

[gontcharov2012-10] Gontcharov, G. A. (2012). "Dependence of kinematics on the age of stars in the solar neighborhood". Astronomy Letters. 38 (12): 771. arXiv:1606.08814. Bibcode:2012AstL...38..771G. doi:10.1134/S1063773712120031.

[tkachenko2024-11] 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. arXiv:2312.14009. Bibcode:2024A&A...683A.252T. doi:10.1051/0004-6361/202347793.