NW Puppis

NW Puppis
Observation data
Epoch J2000      Equinox J2000
Constellation Puppis
Right ascension 07h 18m 38.18538s[1]
Declination −36° 44′ 33.8512″[1]
Apparent magnitude (V) 5.11[2]
Characteristics
Spectral type B3 Vne
Variable type β Cep[2]
Astrometry
Radial velocity (Rv)+18.00 ± 10 km/s
Proper motion (μ) RA: −10.12 ± 0.19[1] mas/yr
Dec.: 5.33 ±0.22[1] mas/yr
Parallax (π)4.31 ± 0.23[1] mas
Distance760 ± 40 ly
(230 ± 10 pc)
Details
Luminosity1108[3] L☉
Temperature15000[3] K
Other designations
NW Puppis, υ2 Puppis, HR 2790, HD 57219, HIP 35406, SAO 197837, CD−36° 3519
Database references
SIMBADdata

NW Puppis (NW Pup), also known as υ2 Puppis, is a star in the constellation Puppis. Located around 760 light-years distant, it shines with a luminosity approximately 1108 times that of the Sun and has a surface temperature of 15000 K.[3] Anamarija Stankov ruled this star out as a Beta Cephei variable.[4]

Neither component of this double is given a letter in Lacaille's catalogue or the British Association star catalogue.[5][6] Gould gave them the designations (Latin letter) v1 and v2 Puppis, but these are rarely used.[7] Lacaille applied the Greek letter υ to the star now called υ Carinae.[5] The designation υ2 first appeared in several catalogues at the end of the 19th century.[8]

References

  1. 1 2 3 4 5 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
  2. 1 2 Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007–2013)". VizieR On-line Data Catalog: B/gcvs. Originally published in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S.
  3. 1 2 3 McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (2012). "Fundamental Parameters and Infrared Excesses of Hipparcos Stars". Monthly Notices of the Royal Astronomical Society. 427 (1): 343–57. arXiv:1208.2037. Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x.
  4. ↑ 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.
  5. 1 2 Coelum australe stelliferum ... H L Guerin & L F Delatour. 1763. pp. 7–.
  6. ↑ Baily, Francis (1845). "The Catalogue of Stars of the British Association for the Advancement of Science". The Catalogue of Stars of the British Association for the Advancement of Science; Containing the Mean Right Ascensions and North Polar Distances of Eight Thousand Three Hundred and Seventy-Seven Fixed Stars. Bibcode:1845tcot.book.....B.
  7. ↑ Kostjuk, N. D. (2004). "VizieR Online Data Catalog: HD-DM-GC-HR-HIP-Bayer-Flamsteed Cross Index (Kostjuk, 2002)". VizieR On-line Data Catalog: IV/27A. Originally published in: Institute of Astronomy of Russian Academy of Sciences (2002). 4027. Bibcode:2004yCat.4027....0K.
  8. ↑ Hoffleit, D.; Warren, W. H. (1995). "VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)". VizieR On-line Data Catalog: V/50. Originally published in: 1964BS....C......0H. 5050. Bibcode:1995yCat.5050....0H.


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