Discovery of a Possible Early-T Thick-Disk Subdwarf from the AllWISE2 Motion Survey
arXiv:1712.08658 · doi:10.3847/1538-3881/aaa3f2
Abstract
We have discovered a potential T0 1 subdwarf from a search for sources in the AllWISE2 Motion Survey that do not have counterparts in surveys at shorter wavelengths. With a tangential velocity of 170 kms, this object - WISE J071121.36-573634.2 - has kinematics that are consistent with the thick-disk population of the Milky Way. Spectral fits suggest a low-metallicity for this object but also allow for the possibility of unresolved multiplicity. If WISE J0711-5736 is indeed an sdT0 dwarf, it would be only the second early-T subdwarf discovered to date.
11 pages, 6 figures, accepted to AJ
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