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]
- LkCa 15 protoplanetary Disk
References
- 1 2 3 Kraus, Adam L.; Ireland, Michael J. (2011). "LkCa 15: A Young Exoplanet Caught at Formation?". The Astrophysical Journal. 745 (1): 5. Bibcode:2012ApJ...745....5K. arXiv:1110.3808 . doi:10.1088/0004-637X/745/1/5.
- ↑ 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. Bibcode:2015Natur.527..342S. ISSN 0028-0836. PMID 26581290. arXiv:1511.07456 . doi:10.1038/nature15761.
- ↑ Irene Klotz (18 November 2015). "Astronomers see planet still growing in its stellar womb". Reuters. News Daily.
External links
- LkCa 15 b listing at the Exoplanet.eu, the Extrasolar Planet Encyclopedia
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