Astronomy:VY Pyxidis
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Short description: Star in the constellation Pyxis
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Pyxis |
| Right ascension | 08h 54m 29.6305s[2] |
| Declination | −23° 31′ 18.575″[2] |
| Apparent magnitude (V) | 7.13 - 7.40[3] |
| Characteristics | |
| Spectral type | F3/5III[4] |
| Variable type | BL Her[3] |
| Astrometry | |
| Proper motion (μ) | RA: 11.081[2] mas/yr Dec.: 29.509[2] mas/yr |
| Parallax (π) | 3.9495 ± 0.0186[2] mas |
| Distance | 826 ± 4 ly (253 ± 1 pc) |
| Details | |
| Mass | 2.4[5] M☉ |
| Radius | 6.5[6] R☉ |
| Luminosity | 46[6] L☉ |
| Surface gravity (log g) | 2.987[5] cgs |
| Temperature | 6,133[5] K |
| Metallicity [Fe/H] | −0.101[5] dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
VY Pyxidis is a BL Herculis variable (type II Cepheid) in the constellation of Pyxis. It ranges between apparent magnitudes 7.13 and 7.40 over a period of 1.23995 days.[3] Located around 826 light-years distant, it shines with a luminosity approximately 46 times that of the Sun and has a surface temperature of 6,133 K
References
- ↑ Sanwal, N. B.; Sarma, M. B. K. (June 1991). "BV 690, a new Bright Type II Cepheid". Journal of Astrophysics and Astronomy 12 (2): 119–131. doi:10.1007/BF02709301. Bibcode: 1991JApA...12..119S. https://ui.adsabs.harvard.edu/abs/1991JApA...12..119S. Retrieved 1 March 2022.
- ↑ 2.0 2.1 2.2 2.3 2.4 Brown, A. G. A. (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics 649: A1. doi:10.1051/0004-6361/202039657. Bibcode: 2021A&A...649A...1G. Gaia EDR3 record for this source at VizieR.
- ↑ 3.0 3.1 3.2 Wils, Patrick (15 November 2011). "VY Pyxidis". AAVSO Website. American Association of Variable Star Observers. http://www.aavso.org/vsx/index.php?view=detail.top&oid=27224.
- ↑ Houk, N.; Smith-Moore, M. (1988), "Catalogue of two-dimensional spectral types for the HD stars, Vol.4", Michigan Spectral Survey 4, Bibcode: 1988mcts.book.....H
- ↑ 5.0 5.1 5.2 5.3 Anders, F.; Khalatyan, A.; Queiroz, A. B. A.; Chiappini, C.; Ardevol, J.; Casamiquela, L.; Figueras, F.; Jimenez-Arranz, O. et al. (2022). "VizieR Online Data Catalog: StarHorse2, Gaia EDR3 photo-astrometric distances (Anders+, 2022)". Vizier Online Data Catalog. Bibcode: 2022yCat.1354....0A.
- ↑ 6.0 6.1 Chandler, Colin Orion et al. (2016). "The Catalog of Earth-Like Exoplanet Survey Targets (CELESTA): A Database of Habitable Zones Around Nearby Stars". The Astronomical Journal 151 (3): 59. doi:10.3847/0004-6256/151/3/59. Bibcode: 2016AJ....151...59C.
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