Gamma Phoenicis
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Phoenix |
| Right ascension | 01h 28m 21.93s[1] |
| Declination | −43° 19′ 05.7″[1] |
| Apparent magnitude (V) | 3.41[2] |
| Spectral type | M0III[3] |
Gamma Phoenicis is a star system in the constellation Phoenix. Located around 71.63 parsecs (233.6 ly) distant,[1] it is an red giant of spectral type M0III,[3] a star that has used up its core hydrogen and has expanded. A spectroscopic binary, the two components orbit each other in 193.75 days, producing eclipses that cause the apparent magnitude to drop to 3.49 from its baseline of 3.39.[4] The primary, with a spectral type of M0III,[3] is also a slow irregular variable, showing small intrinsic variations.[4]
References
- ^ a b c 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.
- ^ "Gamma Phoenicis". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 13 July 2015.
- ^ a b c Keenan, P.; McNeil, R. (October 1989). "The Perkins catalog of revised MK types for the cooler stars". Astrophysical Journal Supplement Series. 71: 245–266. Bibcode:1989ApJS...71..245K. doi:10.1086/191373.
- ^ a b Otero, Sebastián A. (October 2007). "New Elements for 54 Eclipsing Binaries". Open European Journal on Variable Stars. 72 (1): 1–19. Bibcode:2007OEJV...72....1O.
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