PT Puppis (PT Pup) is a star in the constellation Puppis. Anamarija Stankov confirmed this star as a Beta Cephei variable.[5] 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.[4]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Puppis |
| Right ascension | 07h 36m 41.03388s[2] |
| Declination | −19° 42′ 08.4211″[2] |
| Apparent magnitude (V) | 5.720–5.740[3] |
| 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[2] mas/yr Dec.: 5.81 ± 0.20[2] mas/yr |
| Parallax (π) | 1.93 ± 0.28 mas[2] |
| Distance | approx. 1,700 ly (approx. 520 pc) |
| Details | |
| Mass | 7.94[4] M☉ |
| Luminosity | 6405[4] L☉ |
| Temperature | 19400[4] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
The star was discovered to be variable by Janet Rountree Lesh and P. R. Wesselius in 1979.[6] It was given its variable star designation in 1981.[7]
References
edit- ^ "MAST: Barbara A. Mikulski Archive for Space Telescopes". Space Telescope Science Institute. Retrieved 8 December 2021.
- ^ a b c d e 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, S2CID 18759600
- ^ "GCVS catalog (GCVS 5.1, version Oct, 2020)". Retrieved 3 November 2023.
- ^ a b c d 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, S2CID 111387483
- ^ 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. S2CID 119526948.
- ^ Lesh, J. R.; Wesselius, P. R. (October 1979). "Ultraviolet photometry with the Astronomical Netherlands Satellite (ANS). Observations of beta Canis Majoris variables". Astronomy and Astrophysics. 79: 115–120. Retrieved 11 October 2024.
- ^ Kholopov, P. N.; Samus, N. N.; Kukarkina, N. P.; Medvedeva, G. I.; Perova, N. B. (February 1981). "65th Name-List of Variable Stars" (PDF). Information Bulletin on Variable Stars. 1921. Bibcode:1981IBVS.1921....1K. Retrieved 11 October 2024.
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