VY Pyxidis

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VY Pyxidis
VYPyxLightCurve.png
A visual band light curve for VY Pyxidis, plotted from data published by Sanwal and Sarma (1991) [1]
Observation data
Epoch J2000.0        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  mas [2]
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
VY Pyx, BD−22° 2440, HD 76296, HIP  43736, SAO 176679
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

  1. ↑ 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. Bibcode:1991JApA...12..119S. doi:10.1007/BF02709301. S2CID   120662105 . Retrieved 1 March 2022.
  2. 1 2 3 4 5 Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics . 649: A1. arXiv: 2012.01533 . Bibcode:2021A&A...649A...1G. doi: 10.1051/0004-6361/202039657 . S2CID   227254300. (Erratum:  doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
  3. 1 2 3 Wils, Patrick (15 November 2011). "VY Pyxidis". AAVSO Website. American Association of Variable Star Observers . Retrieved 13 July 2014.
  4. ↑ 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. 1 2 3 4 Anders, F.; Khalatyan, A.; Queiroz, A. B. A.; Chiappini, C.; Ardevol, J.; Casamiquela, L.; Figueras, F.; Jimenez-Arranz, O.; Jordi, C.; Monguio, M.; Romero-Gomez, M.; Altamirano, D.; Antoja, T.; Assaad, R.; Cantat-Gaudin, T.; Castro-Ginard, A.; Enke, H.; Girardi, L.; Guiglion, G.; Khan, S.; Luri, X.; Miglio, A.; Minchev, I.; Ramos, P.; Santiago, B. X.; Steinmetz, M. (2022). "VizieR Online Data Catalog: StarHorse2, Gaia EDR3 photo-astrometric distances (Anders+, 2022)". Vizier Online Data Catalog. Bibcode:2022yCat.1354....0A.
  6. 1 2 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. arXiv: 1510.05666 . Bibcode:2016AJ....151...59C. doi: 10.3847/0004-6256/151/3/59 . S2CID   119246448.


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