BG Geminorum

From Wikipedia, the free encyclopedia
BG Geminorum
Satellite image of binary star system BG Geminorum

Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Gemini
Right ascension 06h 03m 30.81s[1]
Declination +27° 41′ 50.7″[1]
Apparent magnitude (V) 12.9 - 13.6[2]
Characteristics
Spectral type K0I[2]
Apparent magnitude (g) 12.83[3]
Astrometry
Proper motion (μ) RA: 0.209±0.021[3] mas/yr
Dec.: -0.385±0.015[3] mas/yr
Parallax (π)0.206 ± 0.020[3] mas
Distance16,000 ± 2,000 ly
(4,900 ± 500 pc)
Orbit[2]
Period (P)91.645 days
Semi-major axis (a)>0.63 ± 0.04 AU
Inclination (i)>80°
Details
K0I
Mass>0.7[4] M☉
Temperature4,500[2] K
Black hole or class B
Mass>3.5[4] M☉
Other designations
BG Geminorum, 2MASS J06033081+2741506, Gaia DR2 3430457002856349952
Database references
SIMBADdata

BG Geminorum is an eclipsing binary star system in the constellation Gemini. It consists of a K0 supergiant with a more massive but unseen companion. The companion is likely to be either a black hole or class B star. Material from the K0 star is being transferred to an accretion disk surrounding the unidentified object.[4]

References[]

  1. ^ a b Cutri, Roc M.; Skrutskie, Michael F.; Van Dyk, Schuyler D.; Beichman, Charles A.; Carpenter, John M.; Chester, Thomas; Cambresy, Laurent; Evans, Tracey E.; Fowler, John W.; Gizis, John E.; Howard, Elizabeth V.; Huchra, John P.; Jarrett, Thomas H.; Kopan, Eugene L.; Kirkpatrick, J. Davy; Light, Robert M.; Marsh, Kenneth A.; McCallon, Howard L.; Schneider, Stephen E.; Stiening, Rae; Sykes, Matthew J.; Weinberg, Martin D.; Wheaton, William A.; Wheelock, Sherry L.; Zacarias, N. (2003). "VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)". CDS/ADC Collection of Electronic Catalogues. 2246: II/246. Bibcode:2003yCat.2246....0C.
  2. ^ a b c d Benson, Priscilla J (2000). "An Optical Study of BG Geminorum: An Ellipsoidal Binary with an Unseen Primary Star". The Astronomical Journal. 119 (2): 890–900. arXiv:astro-ph/9911179. Bibcode:2000AJ....119..890B. doi:10.1086/301230. S2CID 13393881.
  3. ^ a b c Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. Gaia EDR3 record for this source at VizieR.
  4. ^ a b c Kenyon, Scott J (2002). "The Eclipsing Binary BG Geminorum: Improved Constraints on the Orbit and the Structure of the Accretion Disk". The Astronomical Journal. 124 (2): 1054–1059. arXiv:astro-ph/0205157. Bibcode:2002AJ....124.1054K. doi:10.1086/341651. S2CID 15455657.


Stub icon

This supergiant-related article is a stub. You can help Wikipedia by .

  • v
  • t
Stub icon

This variable star–related article is a stub. You can help Wikipedia by .

  • v
  • t
Retrieved from ""