BG Geminorum
 | |
| Data pengamatan Epos J2000.0 Ekuinoks J2000.0 (ICRS) | |
|---|---|
| Rasi bintang | Gemini |
| Asensio rekta | 06j 03m 30.81d[1] |
| Deklinasi | +27° 41′ 50.7″[1] |
| Magnitudo tampak (V) | 12.9 - 13.6[2] |
| Ciri-ciri | |
| Kelas spektrum | K0I[2] |
| Astrometri | |
| Jarak | 7340 tc (2.25±0.25[2] pc) |
| Orbit[2] | |
| Periode (P) | 91.645 hari |
| Sumbu semimayor (a) | >0.63 ± 0.04 SA |
| Inklinasi (i) | >80° |
| Detail | |
| K0I | |
| Massa | >0.7[3] M☉ |
| Suhu | 4,500[2] K |
| Lubang hitam atau kelas B | |
| Massa | >3.5[3] M☉ |
| Penamaan lain | |
| Referensi basis data | |
| SIMBAD | data |
BG Geminorum adalah sistem bintang biner gerhana di rasi Gemini. Sistem bintang biner ini terdiri dari bintang maharaksasa K0 dengan pendamping yang lebih masif tetapi tidak terlihat. Pasangannya kemungkinan besar adalah bintang lubang hitam atau bintang kelas B. Material dari bintang maharaksasa K0 tersedot ke dalam piringan akresi yang mengelilingi objek tak dikenal.
Referensi
- ^ a b Cutri, R. M.; Skrutskie, M. F.; Van Dyk, S.; Beichman, C. A.; Carpenter, J. M.; Chester, T.; Cambresy, L.; Evans, T.; Fowler, J.; Gizis, J.; Howard, E.; Huchra, J.; Jarrett, T.; Kopan, E. L.; Kirkpatrick, J. D.; Light, R. M.; Marsh, K. A.; McCallon, H.; Schneider, S.; Stiening, R.; Sykes, M.; Weinberg, M.; Wheaton, W. A.; Wheelock, S.; Zacarias, N. (2003). "VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)". VizieR On-line Data Catalog: II/246. Originally Published in: 2003yCat.2246....0C. 2246. Bibcode:2003yCat.2246....0C.
- ^ a b c d e 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.
- ^ a b 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.
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