Star in the constellation Cassiopeia
χ Cassiopeiae in optical light Chi Cassiopeiae (χ Cassiopeiae) is a solitary, yellow-hued star in the constellation Cassiopeia . It is visible to the naked eye with an apparent visual magnitude of +4.7. Based upon an annual parallax shift of 15.67 mas as seen from Earth, this system is located roughly 208 light years from the Sun . At that distance, the visual magnitude is diminished by an extinction of 0.18 due to interstellar dust .
With a stellar classification of G9 IIIb, it has the spectrum of an evolved , G-type giant star . It has an estimated age of a billion years and is a red clump star that it is generating energy through helium fusion at its core . The star has about double the mass of the Sun and has expanded to 11 times the Sun's radius . It is radiating 67.6 times the Sun's luminosity from its photosphere at an effective temperature of 4,746 K.
References
^ van Leeuwen, F. (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 , S2CID 18759600 .
^ Jennens, P. A.; Helfer, H. L. (September 1975), "A new photometric metal abundance and luminosity calibration for field G and K giants", Monthly Notices of the Royal Astronomical Society 172 (3): 667–679, Bibcode :1975MNRAS.172..667J , doi :10.1093/mnras/172.3.667 .
^ Nordgren, Tyler E.; et al. (December 1999), "Stellar Angular Diameters of Late-Type Giants and Supergiants Measured with the Navy Prototype Optical Interferometer" , The Astronomical Journal , 118 (6): 3032–3038, Bibcode :1999AJ....118.3032N , doi :10.1086/301114 . {{citation }}: CS1 maint: multiple names: authors list (link )
^ Famaey, B.; et al. (January 2005), "Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data. Revisiting the concept of superclusters", Astronomy and Astrophysics , 430 : 165–186, arXiv :astro-ph/0409579 , Bibcode :2005A&A...430..165F , doi :10.1051/0004-6361:20041272 , S2CID 17804304 .
^ Takeda, Yoichi; et al. (August 2008), "Stellar Parameters and Elemental Abundances of Late-G Giants", Publications of the Astronomical Society of Japan , 60 (4): 781–802, arXiv :0805.2434 , Bibcode :2008PASJ...60..781T , doi :10.1093/pasj/60.4.781 , S2CID 16258166 .
Jofré, E.; et al. (2015), "Stellar parameters and chemical abundances of 223 evolved stars with and without planets", Astronomy & Astrophysics , 574 : A50, arXiv :1410.6422 , Bibcode :2015A&A...574A..50J , doi :10.1051/0004-6361/201424474 , S2CID 53666931 .
"chi Cas" . SIMBAD Centre de données astronomiques de Strasbourg . Retrieved 2017-08-30.{{cite web }}: CS1 maint: postscript (link )
Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society 389 (2): 869–879, arXiv :0806.2878 , Bibcode :2008MNRAS.389..869E , doi :10.1111/j.1365-2966.2008.13596.x , S2CID 14878976 .
Valentini, M.; Munari, U. (November 2010), "A spectroscopic survey of faint, high-Galactic-latitude red clump stars. I. The high resolution sample", Astronomy and Astrophysics , 522 : A79, arXiv :1007.0207 , Bibcode :2010A&A...522A..79V , doi :10.1051/0004-6361/201014870 , S2CID 119156545 .
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