Star in the constellation Cassiopeia
1 Cassiopeiae is a single star in the northern constellation of Cassiopeia , located around 1,130 light years from the Sun. It is visible to the naked eye as a faint, blue-white hued star with an apparent visual magnitude of +4.84. This object is moving closer to the Earth with a heliocentric radial velocity of −9 km/s.
The stellar classification of 1 Cassiopeiae is B0.5 III, matching an evolved B-type giant star . It is 5.7 million years old with a projected rotational velocity of 31. The star has 13.1 times the mass of the Sun and 10.2 times the Sun's radius . It is radiating 18,200 times the Sun's luminosity from its photosphere at an effective temperature of 27,200 K.
References
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^ Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters , 38 (5): 331, arXiv :1108.4971 , Bibcode :2012AstL...38..331A , doi :10.1134/S1063773712050015 , S2CID 119257644
^ Zorec, J.; et al. (July 2009). "Fundamental parameters of B supergiants from the BCD system. I. Calibration of the (λ_1, D) parameters into Teff". Astronomy and Astrophysics . 501 (1): 297–320. arXiv :0903.5134 . Bibcode :2009A&A...501..297Z . doi :10.1051/0004-6361/200811147 . S2CID 14969137 .
^ Fitzpatrick, E. L.; Massa, D. (March 2005), "Determining the Physical Properties of the B Stars. II. Calibration of Synthetic Photometry", The Astronomical Journal , 129 (3): 1642–1662, arXiv :astro-ph/0412542 , Bibcode :2005AJ....129.1642F , doi :10.1086/427855 , S2CID 119512018
^ Underhill, A. B.; et al. (November 1979), "Effective temperatures, angular diameters, distances and linear radii for 160 O and B stars", Monthly Notices of the Royal Astronomical Society 189 (3): 601–605, Bibcode :1979MNRAS.189..601U , doi :10.1093/mnras/189.3.601
Gies, Douglas R.; Lambert, David L. (March 1992). "Carbon, nitrogen, and oxygen abundances in early B-type stars" . Astrophysical Journal, Part 1 . 387 : 673–700. Bibcode :1992ApJ...387..673G . doi :10.1086/171116 .
^ Simón-Díaz, S.; et al. (January 2017). "The IACOB project . III. New observational clues to understand macroturbulent broadening in massive O- and B-type stars". Astronomy & Astrophysics . 597 : 17. arXiv :1608.05508 . Bibcode :2017A&A...597A..22S . doi :10.1051/0004-6361/201628541 . S2CID 3478126 . A22.
^ Tetzlaff, N.; et al. (January 2011). "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun" . Monthly Notices of the Royal Astronomical Society . 410 (1): 190–200. arXiv :1007.4883 . Bibcode :2011MNRAS.410..190T . doi :10.1111/j.1365-2966.2010.17434.x . S2CID 118629873 .
"1 Cas" . SIMBAD Centre de données astronomiques de Strasbourg . Retrieved 2019-04-03.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 .
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