CPD−57° 2874
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Carina |
| Right ascension | 10h 15m 21.9711s[1] |
| Declination | −57° 51′ 42.713″[1] |
| Apparent magnitude (V) | +10.18 |
| Characteristics | |
| Spectral type | B[e] |
| Astrometry | |
| Proper motion (μ) | RA: −5.90[1] mas/yr Dec.: 5.10[1] mas/yr |
| Distance | 8200 ly |
| Absolute magnitude (MV) | −7.1 |
| Details | |
| Radius | 60 R☉ |
| Luminosity | >10,000 L☉ |
| Other designations | |
| Database references | |
| SIMBAD | data |
CPD−57° 2874 is a class B[e] supergiant in the constellation Carina.[2] It is a rare star as it is hot but has dust which shows forbidden lines and IR emissions.[3] In 2007 the high spatial and spectral resolution of the star's circumstellar envelope was studied. This was the first time such a study was carried out on a class B[e] supergiant.[4][5]
The star is surrounded by a dust disk, but planets are unlikely since the lifetime of giants like this is not long enough for planets to form. It has entered its final stages and started blowing its hull out into space.[6]
References
- ↑ 1.0 1.1 1.2 1.3 "CD-57 3107". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2015-02-26.
- ↑ Fernandes, M. Borges (2010). "The Nature Of Stars With The B[e] Phenomenon Through Interferometric Eyes" (PDF). RevMexAA (Serie de Confer encias) 38: 98–99.
- ↑ F. Malbet et al. (2007). "In The Intimacy Of Stars With Amber At The VLTI" (PDF). SF2A: 2.
- ↑ International Astronomical Union. Symposium (2008). Massive Stars as Cosmic Engines (IAU S250). Cambridge University Press. p. 153. ISBN 9780521874724.
- ↑ Cidale, L. S. et al. (2012). "Observational constraints for the circumstellar disk of the B[e] star CPD − 529243" (PDF). A&A 548 (A72): 2. Bibcode:2012A&A...548A..72C. doi:10.1051/0004-6361/201220120.
- ↑ "CPD -572874". Retrieved 6 August 2013.
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