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PT Puppis

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Star in the constellation Puppis
PT Puppis

A light curve for PT Puppis, plotted from TESS data
Observation data
Epoch J2000      Equinox J2000
Constellation Puppis
Right ascension 07 36 41.03388
Declination −19° 42′ 08.4211″
Apparent magnitude (V) 5.720–5.740
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 mas/yr
Dec.: 5.81 ± 0.20 mas/yr
Parallax (π)1.93 ± 0.28 mas
Distanceapprox. 1,700 ly
(approx. 520 pc)
Details
Mass7.94 M☉
Luminosity6405 L☉
Temperature19400 K
Other designations
PT Puppis, HR 2928, HD 61068, HIP 37036, SAO 153149
Database references
SIMBADdata

PT Puppis (PT Pup) is a star in the constellation Puppis. Anamarija Stankov confirmed this star as a Beta Cephei variable. 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.

The star was discovered to be variable by Janet Rountree Lesh and P. R. Wesselius in 1979. It was given its variable star designation in 1981.

References

  1. "MAST: Barbara A. Mikulski Archive for Space Telescopes". Space Telescope Science Institute. Retrieved 8 December 2021.
  2. ^ 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
  3. "GCVS catalog (GCVS 5.1, version Oct, 2020)". Retrieved 3 November 2023.
  4. ^ 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
  5. 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.
  6. 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.
  7. 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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