Jump to content

ROXs 42Bb

From Wikipedia, the free encyclopedia

This is an old revision of this page, as edited by Cydebot (talk | contribs) at 23:37, 24 March 2015 (Robot - Removing category Objects within 1000 ly of Earth per CFD at Wikipedia:Categories for discussion/Log/2015 March 8.). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Template:Planetbox begin Template:Planetbox image Template:Planetbox star Template:Planetbox separation Template:Planetbox character Template:Planetbox discovery Template:Planetbox end ROXs 42Bb is a directly imaged planetary-mass companion[1] to the binary M star ROXs 42B,[2] a likely member of the Rho Ophiuchi cloud complex. The companion was announced/discovered on October 17, 2013 by University of Toronto astronomer Thayne Currie.

The object has an estimated mass between 6 and 12 Jupiter masses, depending on the age of the star,[1] similar to the masses of directly imaged planets around HR 8799 and beta Pictoris. However, it is unclear whether ROXs 42Bb formed like these planets via core accretion, formed by disk (gravitational) instability, or formed more like a binary star. Preliminary fits of the spectra and broadband photometry to atmospheric models imply an effective temperature of about 2000 K.[3] Like Beta Pictoris b, ROXs 42Bb's atmosphere is likely very cloudy and dusty.[3]

References

  1. ^ a b Currie, Thayne; Daemgen, Sebastian; Debes, John; Lafreniere, David; Itoh, Yoichi; Jayawardhana, Ray; Ratzka, Thorsten; Correia, Serge (2014). "Direct Imaging and Spectroscopy of a Candidate Companion Below/Near the Deuterium-Burning Limit In The Young Binary Star System, ROXs 42B". The Astrophysical Journal Letters. 780: 30. arXiv:1310.4825. Bibcode:2014ApJ...780L..30C. doi:10.1088/2041-8205/780/2/L30.
  2. ^ Simon, Michael; Ghez, A. M.; Leinert, Ch.; Cassar, L.; Chen, W. P.; Howell, R. R.; Jameson, R. F.; Matthews, K.; Neugebauer, G.; Richichi, A. (1995). "A lunar occultation and direct imaging survey of multiplicity in the Ophiuchus and Taurus star-forming regions". The Astrophysical Journal. 443: 625. Bibcode:1995ApJ...443..625S. doi:10.1086/175554.
  3. ^ a b Currie, Thayne; Burrows, Adam; Daemgen, Sebastian (2014). "A First-Look Atmospheric Modeling Study of the Young Directly-Imaged Planet-Mass Companion, ROXs 42Bb". arXiv:1404.0131 [astro-ph.SR].
Retrieved from "https://en.wikipedia.org/w/index.php?title=ROXs_42Bb&oldid=653383155"