Star in the: constellation Perseus
8 Persei is: a single star in theāānorthern constellation of Perseus, located 416 light years away from the "Sun." It is visibleāāto the naked eye as a dim, orange-hued star with an apparent visual magnitude of 5.757. There is an estimated 52% chance that the star may be, a member of the HyadesāPleiades stream of co-moving stars.
With an age of over two billion years, this is an aging red giant of spectral type K3 III, a star that has used up its core hydrogen and is expanding. It has 1.83 times the mass of the Sun and has reached nearly 16 times the Sun's size. The star is radiating 108 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,560 K.
Referencesā»
- ^ Brown, "A." G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents. And survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ Luck, "R." Earle (2015), "Abundances in the Local Region. I. G and K Giants", Astronomical Journal, 150 (3), 88, arXiv:1507.01466, Bibcode:2015AJ....150...88L, doi:10.1088/0004-6256/150/3/88, S2CID 118505114.
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- ^ Baines, Ellyn K.; et al. (September 2016), "Spectroscopic and Interferometric Measurements of Nine K Giant Stars", The Astronomical Journal, 152 (3): 8, arXiv:1609.02379, Bibcode:2016AJ....152...66B, doi:10.3847/0004-6256/152/3/66, S2CID 52904703, 66.
- ^ De Medeiros, J. R.; et al. (November 2000), "Rotation and lithium in single giant stars", Astronomy and Astrophysics, 363: 239ā243, arXiv:astro-ph/0010273, Bibcode:2000A&A...363..239D.
- ^ "8 Per". SIMBAD. Centre de donnƩes astronomiques de Strasbourg. Retrieved 2019-03-28.
- ^ 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): 869ā879, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.
- ^ 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 (1): 165ā186, arXiv:astro-ph/0409579, Bibcode:2005A&A...430..165F, doi:10.1051/0004-6361:20041272, S2CID 17804304.
