PT Puppis
PT Puppis (PT Pup) is a star in the constellation Puppis. Anamarija Stankov confirmed this star as a Beta Cephei variable.[3] Analysis of its spectrum and allowing for extinction gives a mass 7.94 times that of the Sun, a surface temperature of 19,400 K and luminosity of 6405 Suns.[2]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Puppis |
| Right ascension | 07h 36m 41.03388s[1] |
| Declination | −19° 42′ 08.4211″[1] |
| Characteristics | |
| Spectral type | B2 II |
| Variable type | Beta Cephei |
| Astrometry | |
| Radial velocity (Rv) | +22.00 ± 4.3 km/s |
| Proper motion (μ) | RA: −7.86 ± 0.21[1] mas/yr Dec.: 5.81 ± 0.20[1] mas/yr |
| Parallax (π) | 1.93 ± 0.28[1] mas |
| Distance | approx. 1,700 ly (approx. 520 pc) |
| Details | |
| Mass | 7.94[2] M☉ |
| Luminosity | 6405[2] L☉ |
| Temperature | 19400[2] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
References
- van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357
- Hohle, M. M.; Neuhäuser, R.; Schutz, B. F. (April 2010), "Masses and luminosities of O- and B-type stars and red supergiants", Astronomische Nachrichten, 331 (4): 349, arXiv:1003.2335, Bibcode:2010AN....331..349H, doi:10.1002/asna.200911355
- Stankov, Anamarija; Handler, Gerald (2005). "Catalog of Galactic β Cephei Stars". The Astrophysical Journal Supplement Series. 158 (2): 193–216. arXiv:astro-ph/0506495. Bibcode:2005ApJS..158..193S. doi:10.1086/429408. ISSN 0067-0049.
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