New brown dwarfs in Upper Sco using UKIDSS Galactic Cluster Survey science verification data

N. Lodieu,N. C. Hambly,R. F. Jameson,S. T. Hodgkin,G. Carraro,T. R. Kendall

Monthly Notices of the Royal Astronomical Society（2007）

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摘要

We present first results from a deep (J= 18.7), wide-field (6.5 deg2) infrared (ZY JHK) survey in the Upper Sco association conducted within the science verification phase of the United Kingdom Infrared Telescope Infrared Deep Sky Survey Galactic Cluster Survey (GCS). Cluster members define a sequence well separated from field stars in the (Z−J, Z) colour–magnitude diagram. We have selected a tota...

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关键词

techniques: photometric,stars: low-mass, brown dwarfs,stars: luminosity function, mass function,open clusters and associations: individual: Upper Sco,infrared: stars

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