LkCa 15 b

LkCa 15 b
Discovery
Discovered byKraus and Ireland[1]
Discovery siteKeck II
Discovery date2011
Direct imaging
Orbital characteristics
15.7 ± 2.1 AU (2.35×109 ± 310,000,000 km)[1]
StarLkCa 15

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 through accretion.[2] It is the first observed exoplanet seen in the process of active accretion.[3] The planet existence was refuted in 2019 as higher resolution imaging has become available.[4]

References[]

  1. ^ a b c 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. Archived from the original on 19 November 2015. Retrieved 20 November 2015.
  4. ^ NO CLEAR, DIRECT EVIDENCE FOR MULTIPLE PROTOPLANETS ORBITING LKCA 15:LKCA 15 bcd ARE LIKELY INNER DISK SIGNALS, 2019, arXiv:1905.04322

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