期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 388, 期 2, 页码 495-499出版社
WILEY-BLACKWELL
DOI: 10.1111/j.1365-2966.2008.13437.x
关键词
stars : low-mass, brown dwarfs; open clusters and associations : individual : Hyades
We present the results of a proper motion survey of the Hyades to search for brown dwarfs, based on UKIRT Deep Sky Survey (UKIDSS) and Two-Micron All Sky Survey (2MASS) data. This survey covers similar to 275 deg(2) to a depth of K similar to 15 mag, equivalent to a mass of similar to 0.05 M(circle dot) assuming a cluster age of 625 Myr. The discovery of 12 L dwarf Hyades members is reported. These members are also brown dwarfs, with masses between 0.05 < M < 0.075 M(circle dot). A high proportion of these L dwarfs appear to be photometric binaries.
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