Pollux (star)

Pollux is a red giant star . It is the brightest star in the Gemini constellation . It's diameter is 12,255,584 kilometres (7,615,267 miles). ^[1] Once a type A star, Pollux has used all the hydrogen in its core and expanded to become a K-type giant star. ^[2]

It is located at a distance of 34 light years , which makes it the closest giant star to the Sun . In 2006, an extrasolar planet (designated Pollux b , formally named Thestias) was confirmed to be orbiting the star at a distance of 1.64 AU in nearly a circular orbit. ^[3]

References [ change | change source ]

↑ Dollinger, M. P.; Paulson, D. B.; Esposito, M.; Hartmann, M.; Yang, S.; Walker, G. a. H.; Saar, S. H.; Guenther, E. W.; Endl, M.; Cochran, W. D.; Hatzes, A. P. (1 October 2006). "Confirmation of the planet hypothesis for the long-period radial velocity variations of β Geminorum" . Astronomy & Astrophysics . 457 (1): 335?341. arXiv : astro-ph/0606517 . Bibcode : 2006A&A...457..335H . doi : 10.1051/0004-6361:20065445 . S2CID 14319327 – via www.aanda.org.
↑ Power, J.; Folsom, C. P.; Eck, S. Van; Cabanac, R.; Alecian, E.; Donati, J.-F.; Petit, P.; Roudier, T.; Weiss, W. W.; Catala, C.; Charbonnel, C.; Konstantinova-Antova, R.; Wade, G. A.; Auriere, M. (1 September 2009). "Discovery of a weak magnetic field in the photosphere of the single giant Pollux" . Astronomy & Astrophysics . 504 (1): 231?237. arXiv : 0907.1423 . Bibcode : 2009A&A...504..231A . doi : 10.1051/0004-6361/200912050 . S2CID 14295272 – via www.aanda.org.
↑ Hatzes, A. P.; Cochran, W. D.; Guenther, M. Endl E. W.; Saar, S. H.; Walker, G. A. H.; Yang, S.; Hartmann, M.; Esposito, M.; Paulson, D. B. (2006). "Confirmation of the Planet Hypothesis for the Long-period Radial Velocity Variations of Beta Geminorum". Astronomy & Astrophysics . 457 (1): 335?341. arXiv : astro-ph/0606517 . doi : 10.1051/0004-6361:20065445 . ISSN 0004-6361 . S2CID 14319327 .

[1] Dollinger, M. P.; Paulson, D. B.; Esposito, M.; Hartmann, M.; Yang, S.; Walker, G. a. H.; Saar, S. H.; Guenther, E. W.; Endl, M.; Cochran, W. D.; Hatzes, A. P. (1 October 2006). "Confirmation of the planet hypothesis for the long-period radial velocity variations of β Geminorum" . Astronomy & Astrophysics . 457 (1): 335?341. arXiv : astro-ph/0606517 . Bibcode : 2006A&A...457..335H . doi : 10.1051/0004-6361:20065445 . S2CID 14319327 – via www.aanda.org.

[2] Power, J.; Folsom, C. P.; Eck, S. Van; Cabanac, R.; Alecian, E.; Donati, J.-F.; Petit, P.; Roudier, T.; Weiss, W. W.; Catala, C.; Charbonnel, C.; Konstantinova-Antova, R.; Wade, G. A.; Auriere, M. (1 September 2009). "Discovery of a weak magnetic field in the photosphere of the single giant Pollux" . Astronomy & Astrophysics . 504 (1): 231?237. arXiv : 0907.1423 . Bibcode : 2009A&A...504..231A . doi : 10.1051/0004-6361/200912050 . S2CID 14295272 – via www.aanda.org.

[3] Hatzes, A. P.; Cochran, W. D.; Guenther, M. Endl E. W.; Saar, S. H.; Walker, G. A. H.; Yang, S.; Hartmann, M.; Esposito, M.; Paulson, D. B. (2006). "Confirmation of the Planet Hypothesis for the Long-period Radial Velocity Variations of Beta Geminorum". Astronomy & Astrophysics . 457 (1): 335?341. arXiv : astro-ph/0606517 . doi : 10.1051/0004-6361:20065445 . ISSN 0004-6361 . S2CID 14319327 .

[1]

[2]

[3]