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2012MNRAS.420.2497R - Mon. Not. R. Astron. Soc., 420, 2497-2517 (2012/March-1)
Disc frequencies for brown dwarfs in the upper Scorpius OB association: implications for brown dwarf formation theories.
RIAZ B., LODIEU N., GOODWIN S., STAMATELLOS D. and THOMPSON M.
Abstract (from CDS):
We also present a WISE spectral energy distribution classification scheme, based on the Ks and WISE bands of 3.4–12 µm. We have determined certain thresholds in the WISE spectral slope versus spectral type diagrams to distinguish between the red population of Class I/II systems and the Class III sequence. We have found the WISE [3.4] - [12] colour to provide the best distinction between the photospheric and the disc population. Our work includes a comparison of the sensitivities of WISE and Spitzer disc surveys. We estimate that WISE can be incomplete for discs at spectral type later than M8 in distant clusters such as SOri. WISE should be able to recover the M8–M9 discs in the nearby young clusters.
Abstract Copyright: 2012 The Authors Monthly Notices of the Royal Astronomical Society2012 RAS
Journal keyword(s): brown dwarfs - circumstellar matter - stars: low-mass - open clusters and associations: individual: Upper Scorpius OB association
Simbad objects: 62
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