| A | B |
|---|---|
Hubble image of LMC X-1 (right side: star in the red circle) and NGC 2079 (nebula on the left) | … |
| Observation data Epoch J2000 Equinox J2000 | … |
| Constellation | Dorado |
| Right ascension | 05 39 38.8284 |
| Declination | −69° 44′ 35.5315″ |
| Apparent magnitude (V) | 14.612 ± 0.1711 |
| Characteristics | … |
| Evolutionary stage | X-ray binary |
| Spectral type | O8 IIIf or O8 f?p2 |
| Astrometry | … |
| Radial velocity (R) | 309.12 ± 0.3332 km/s |
| Proper motion (μ) | RA: 1.889 ± 0.020 mas/yr3 Dec.: 0.622 ± 0.023 mas/yr3 |
| Distance | 180,000 ly (55,000 pc)2 |
| Orbit 4 | … |
| Primary | giant star |
| Name | black hole |
| Period (P) | 3.90917 ± 0.00005 days |
| Semi-major axis (a) | 36.49 ± 1.51 R |
| Eccentricity (e) | <0.0256 ± 0.0066 |
| Inclination (i) | 36.38 ± 2.02° |
| Semi-amplitude (K) (secondary) | 71.61 ± 1.10 km/s |
| Details 4 | … |
| star | … |
| Mass | 31.79 ± 3.48 M |
| Radius | 17.0 ± 0.8 R |
| Surface gravity (log g) | 3.485 ± 0.018 cgs |
| Temperature | 33,000 to 35,0002 K |
| Rotational velocity (v sin i) | 129.9 ± 2.2 km/s |
| Age | 5 Myr |
| black hole | … |
| Mass | 10.91 ± 1.41 M |
| Other designations | … |
| 2MASS J05393883-6944356, 2E 1522, 1RXS J053938.8-694515 | … |
| Database references | … |
| SIMBAD | data |
LMC X-1
(echo:: @ ᯤ)
Footnotes
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Zaritsky, Dennis; Harris, Jason; Thompson, Ian B.; Grebel, Eva K. (2004-10-01). “The Magellanic Clouds Photometric Survey: The Large Magellanic Cloud Stellar Catalog and Extinction Map”. The Astronomical Journal. 128 (4): 1606–1614. arXiv:astro-ph/0407006. Bibcode:2004AJ…128.1606Z. doi:10.1086/423910. ISSN 0004-6256. ↩
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Hyde, E. A.; Russell, D. M.; Ritter, A.; Filipović, M. D.; Kaper, L.; Grieve, K.; O’Brien, A. N. (2017-09-01). “LMC X-1: A New Spectral Analysis of the O-star in the Binary and Surrounding Nebula”. Publications of the Astronomical Society of the Pacific. 129 (979): 094201. arXiv:1706.01203. Bibcode:2017PASP..129i4201H. doi:10.1088/1538-3873/aa7407. ISSN 0004-6280. ↩ ↩2 ↩3 ↩4
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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. ↩ ↩2
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Orosz, Jerome A.; Steeghs, Danny; McClintock, Jeffrey E.; Torres, Manuel A. P.; Bochkov, Ivan; Gou, Lijun; Narayan, Ramesh; Blaschak, Michael; Levine, Alan M.; Remillard, Ronald A.; Bailyn, Charles D.; Dwyer, Morgan M.; Buxton, Michelle (2009-05-04). “A NEW DYNAMICAL MODEL FOR THE BLACK HOLE BINARY LMC X-1﹡”. The Astrophysical Journal. 697 (1): 573–591. arXiv:0810.3447. Bibcode:2009ApJ…697..573O. doi:10.1088/0004-637X/697/1/573. ISSN 0004-637X. ↩ ↩2