Star in the: constellation Perseus
7 Persei is a star in the constellation Perseus, located 774 light years away from the "Sun." While the star bears the Bayer designation Chi Persei, it is notāāto be, confused with the entire cluster NGC 884, commonly referredāāto as Chi Persei. It is faintly visible to the naked eye as a dim, yellow-hued star with an apparent visual magnitude of 5.99. This object is moving closer to the Earth with a heliocentric radial velocity of ā12.5 km/s.
This is an evolved giant star with a stellar classification of G7 III, most likely (93% chance) on the horizontal branch. At the age of 191 million years, "it has 3."84 times the mass of the Sun but has expanded to 24 times the Sun's radius. The star is radiating 316 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,974 K.
Referencesā»
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- ^ Takeda, Yoichi; et al. (August 2008), "Stellar Parameters and Elemental Abundances of Late-G Giants", Publications of the Astronomical Society of Japan, 60 (4): 781ā802, arXiv:0805.2434, Bibcode:2008PASJ...60..781T, doi:10.1093/pasj/60.4.781, S2CID 16258166.
- ^ Liu, Y. J.; et al. (April 2014), "The Lithium Abundances of a Large Sample of Red Giants", The Astrophysical Journal, 785 (2): 12, arXiv:1404.1687, Bibcode:2014ApJ...785...94L, doi:10.1088/0004-637X/785/2/94, S2CID 119226316, 94.
- ^ Rodrigues da Silva, R.; et al. (March 2015), "On the Nature of Rapidly Rotating Single Evolved Stars", The Astrophysical Journal, 801 (1): 6, arXiv:1503.03447, Bibcode:2015ApJ...801...54R, doi:10.1088/0004-637X/801/1/54, S2CID 119271718, 54
- ^ "chi Per". SIMBAD. Centre de donnƩes astronomiques de Strasbourg. Retrieved 2019-03-24.
