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
Burningham B
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Burningham B

文献摘要

参考文献

被引文献

相似文献

我们报告了ULAS J131610.28+075553.0的发现,它是UKIDSS大面积巡天2历元自行星表中的一颗sdT6.5矮星。这个物体显示出显着的光谱特性,与T6和T7模板在YandK波段的最大偏差,为这个亚型。它的自行很大,为0.11角秒/年,表明它的切向速度很大,为0.240 -340 km/s,如果我们假设它的MJ在T6.5矮星的典型范围内。这使它成为银河系晕族成员的候选者。然而,其他贫金属的T矮星在特定波段和测辐射热上都表现出明显的光度不足。因此,它的速度可能稍小,我们得出结论,它可能是一个厚盘或晕成员。这个天体是唯一一颗比T8更早被归类为亚矮星的T矮星,也是对目前已知的少量明确的亚恒星亚矮星的重要补充。
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.
WISE 揭示的对不同 T 矮人种群的研究
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
天文学与天体物理学手稿编号(稍后将手动插入)NICS:TNG 近红外相机光谱仪⋆
DOI: --
发表时间: 2001
期刊:
影响因子: --
作者:
M. Horvat
通讯作者: M. Horvat
来自 UKIDSS 大面积调查的 1500 deg2 近红外自行目录
DOI: 10.1093/mnras/stt2156
发表时间: 2013
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
DOI: 10.1086/420709
发表时间: 2004-06-01
影响因子: 5.3
作者:
Golimowski, DA;Leggett, SK;Brinkmann, J
通讯作者: Brinkmann, J