The discovery of a T6.5 subdwarf
The discovery of a T6.5 subdwarf
复制标题
T6.5亚矮星的发现
DOI:
10.1093/mnras/stu184
复制
发表时间:
2014
影响因子:
4.8
通讯作者:
Burningham B
中科院分区:
文献类型:
--
作者:
Burningham B
We report the discovery of ULAS J131610.28+075553.0, an sdT6.5 dwarf in the UKIDSS Large Area Survey 2 epoch proper motion catalogue. This object displays significant spectral peculiarity, with the largest yet seen deviations from T6 and T7 templates in theYandKbands for this subtype. Its large, ∼1 arcsec yr−1, proper motion suggests a large tangential velocity ofVtan≈ 240–340 km s−1, if we assume itsMJlies within the typical range for T6.5 dwarfs. This makes it a candidate for membership of the Galactic halo population. However, other metal-poor T dwarfs exhibit significant under luminosity both in specific bands and bolometrically. As a result, it is likely that its velocity is somewhat smaller, and we conclude it is a likely thick disc or halo member. This object represents the only T dwarf earlier than T8 to be classified as a subdwarf, and is a significant addition to the currently small number of known unambiguously substellar subdwarfs.
登录
查看更多内容
DOI:
10.1088/0067-0049/205/1/6
发表时间:
2013
期刊:
The Astrophysical Journal Supplement Series
影响因子:
--
作者:
G. Mace;J. Davy Kirkpatrick;M. Cushing;C. Gelino;R. Griffith;M. Skrutskie;K. Marsh;E. Wright;P. Eisenhardt;I. McLean;M. Thompson;Katholeen Mix;V. Bailey;C. Beichman;J. Bloom;A. Burgasser;J. Fortney;P. Hinz;R. Knox;P. Lowrance;M. Marley;C. Morley;T. Rodigas;D. Saumon;S. Sheppard;N. Stock
通讯作者:
N. Stock
DOI:
--
发表时间:
2001
期刊:
影响因子:
--
作者:
M. Horvat
通讯作者:
M. Horvat
影响因子:
4.8
作者:
L. Smith;P. Lucas;B. Burningham;H. Jones;R. Smart;A. Andrei;A. Andrei;A. Andrei;S. Catalan;D. Pinfield
通讯作者:
D. Pinfield
DOI:
10.1086/498563
发表时间:
2005-10
期刊:
The Astrophysical Journal
影响因子:
--
作者:
A. Burgasser;T. Geballe;S. Leggett;J. Kirkpatrick;D. Golimowski
通讯作者:
A. Burgasser;T. Geballe;S. Leggett;J. Kirkpatrick;D. Golimowski
影响因子:
5.3
作者:
Golimowski, DA;Leggett, SK;Brinkmann, J
通讯作者:
Brinkmann, J