LkCa 15 b

LkCa 15 b
Exoplanet List of exoplanets
Parent star
Star LkCa 15
Constellation Taurus-Auriga Star Formation Region
Right ascension (α) 4h 39m 18.0s
Declination (δ) +22° 21′ 03″
Apparent magnitude (mV) 11.91
Spectral type K5V
Orbital elements
Semi-major axis(a) 15.7±2.1[1] AU
Discovery information
Discovery date 2011
Discoverer(s) Kraus and Ireland[1]
Discovery method Direct imaging
Discovery site Keck II
Discovery status

LkCa 15 b is a candidate protoplanetary object in orbit around LkCa 15, a star in the Taurus-Auriga Star Forming Region. It was discovered by direct imaging techniques using the Keck II telescope in 2011 by Adam Kraus and Michael Ireland.[1] A 2015 study of observations from the Magellan Telescopes and the Large Binocular Telescope argued that the planet is forming though accretion.[2] It is the first observed exoplanet seen in the process of active accretion.[3]

References

  1. 1 2 3 Kraus, Adam L.; Ireland, Michael J. (2011). "LkCa 15: A Young Exoplanet Caught at Formation?". The Astrophysical Journal. 745 (1): 5. arXiv:1110.3808. Bibcode:2012ApJ...745....5K. doi:10.1088/0004-637X/745/1/5.
  2. ↑ Sallum, S.; Follette, K. B.; Eisner, J. A.; Close, L. M.; Hinz, P.; Kratter, K.; Males, J.; Skemer, A.; Macintosh, B.; Tuthill, P.; Bailey, V.; Defrère, D.; Morzinski, K.; Rodigas, T.; Spalding, E.; Vaz, A.; Weinberger, A. J. (2015). "Accreting protoplanets in the LkCa 15 transition disk". Nature. 527 (7578): 342–344. arXiv:1511.07456. Bibcode:2015Natur.527..342S. doi:10.1038/nature15761. ISSN 0028-0836. PMID 26581290.
  3. ↑ Irene Klotz (18 November 2015). "Astronomers see planet still growing in its stellar womb". Reuters. News Daily.
  • LkCa 15 b listing at the Exoplanet.eu, the Extrasolar Planet Encyclopedia


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