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PT Puppis

Topic: Astronomy

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Short description: Star in the constellation Puppis
PT Puppis
250px
A light curve for PT Puppis, plotted from TESS data[1]
Observation data
Equinox J2000.0]] (ICRS)
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[2] mas
Distanceapprox. 1,700 ly
(approx. 520 pc)
Details
Mass7.94[4] M☉
Luminosity6405[4] L☉
Temperature19400[4] 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.[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]

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

  1. ↑ "MAST: Barbara A. Mikulski Archive for Space Telescopes". Space Telescope Science Institute. https://mast.stsci.edu/portal/Mashup/Clients/Mast/Portal.html. 
  2. ↑ 2.0 2.1 2.2 2.3 2.4 van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, doi:10.1051/0004-6361:20078357, Bibcode: 2007A&A...474..653V 
  3. ↑ "GCVS catalog (GCVS 5.1, version Oct, 2020)". https://vizier.cds.unistra.fr/viz-bin/VizieR-S?V*%20PT%20Pup. 
  4. ↑ 4.0 4.1 4.2 4.3 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, doi:10.1002/asna.200911355, Bibcode: 2010AN....331..349H 
  5. ↑ Stankov, Anamarija; Handler, Gerald (2005). "Catalog of Galactic β Cephei Stars". The Astrophysical Journal Supplement Series 158 (2): 193–216. doi:10.1086/429408. ISSN 0067-0049. Bibcode: 2005ApJS..158..193S. 
  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. Bibcode: 1979A&A....79..115L. https://articles.adsabs.harvard.edu/pdf/1979A%26A....79..115L. 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". Information Bulletin on Variable Stars 1921. Bibcode: 1981IBVS.1921....1K. https://ibvs.konkoly.hu/pub/ibvs/1901/1921.pdf. Retrieved 11 October 2024. 




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