Astronomy:NW Puppis
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Short description: B-type star in the constellation Puppis
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Puppis |
| Right ascension | 07h 18m 38.18632s[1] |
| Declination | −36° 44′ 33.8557″[1] |
| Apparent magnitude (V) | 5.11[2] |
| Characteristics | |
| Spectral type | B3 Vne |
| Variable type | β Cep[2] |
| Astrometry | |
| Radial velocity (Rv) | +18.00±10[3] km/s |
| Proper motion (μ) | RA: −10.848[1] mas/yr Dec.: +6.699[1] mas/yr |
| Parallax (π) | 3.5875 ± 0.1683[1] mas |
| Distance | 910 ± 40 ly (280 ± 10 pc) |
| Details | |
| Luminosity | 1,108[4] L☉ |
| Surface gravity (log g) | 4.07±0.57[5] cgs |
| Temperature | 17,930±540[5] K |
| Rotational velocity (v sin i) | 80±8[5] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
NW Puppis, also known as υ2 Puppis, is a star in the constellation Puppis. Located around 910 light-years distant, it shines with a luminosity approximately 1,108 times that of the Sun and has a surface temperature of 15,000 K.[4] Anamarija Stankov ruled this star out as a Beta Cephei variable.[6]
Neither component of this double is given a letter in Lacaille's catalogue or the British Association star catalogue.[7][8] Gould gave them the designations (Latin letter) v1 and v2 Puppis, but these are rarely used.[9] Lacaille applied the Greek letter υ to the star now called υ Carinae.[7] The designation υ2 first appeared in several catalogues at the end of the 19th century.[10]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.
- ↑ 2.0 2.1 Samus, N. N. 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.
- ↑ Kharchenko, N. V.; Scholz, R.-D.; Piskunov, A. E.; Röser, S.; Schilbach, E. (2007). "Astrophysical supplements to the ASCC-2.5: Ia. Radial velocities of ˜55000 stars and mean radial velocities of 516 Galactic open clusters and associations". Astronomische Nachrichten 328 (9): 889. doi:10.1002/asna.200710776. Bibcode: 2007AN....328..889K.
- ↑ 4.0 4.1 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. doi:10.1111/j.1365-2966.2012.21873.x. Bibcode: 2012MNRAS.427..343M.
- ↑ 5.0 5.1 5.2 Zorec, J. et al. (November 2016). "Critical study of the distribution of rotational velocities of Be stars. I. Deconvolution methods, effects due to gravity darkening, macroturbulence, and binarity". Astronomy & Astrophysics 595: 26. doi:10.1051/0004-6361/201628760. Bibcode: 2016A&A...595A.132Z.
- ↑ 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.
- ↑ 7.0 7.1 Coelum australe stelliferum .... H L Guerin & L F Delatour. 1763. pp. 7–. https://books.google.com/books?id=LIo_AAAAcAAJ&pg=PP7.
- ↑ 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.
- ↑ 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.
- ↑ 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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