Accurate mass and radius determinations of a cool subdwarf in an eclipsing binary
Accurate mass and radius determinations of a cool subdwarf in an eclipsing binary
复制标题
食双星中冷亚矮星的精确质量和半径测定
DOI:
10.1038/s41550-019-0746-7
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发表时间:
2019-03
期刊:
影响因子:
14.1
通讯作者:
Santiago Torres
中科院分区:
文献类型:
--
作者:
Rebassa-Mansergas Alberto;Steven G. Parsons;Vikram S. Dhillon;Juanjuan Ren;Stuart P. Littlefair;Thomas R. Marsh;Santiago Torres
Cool subdwarfs are metal-poor low-mass stars that formed during the early stages of the evolution of our Galaxy. Because they are relatively rare in the vicinity of the Sun, we know of few cool subdwarfs in the solar neighbourhood, and none for which both the mass and the radius are accurately determined. This hampers our understanding of stars at the low-mass end of the main sequence. Here we report the discovery of SDSSJ235524.29+044855.7 as an eclipsing binary containing a cool subdwarf star, with a white dwarf companion. From the light curve and the radial-velocity curve of the binary we determine the mass and the radius of the cool subdwarf and we derive its effective temperature and luminosity by analysing its spectral energy distribution. Our results validate the theoretical relations between mass, radius, effective temperature and luminosity for low-mass, low-metallicity stars.
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DOI:
10.1111/j.1365-2966.2007.12400.x
发表时间:
2007-12
影响因子:
4.8
作者:
通讯作者:
--
DOI:
10.1088/0004-637x/794/2/145
发表时间:
2014-09
期刊:
The Astrophysical Journal
影响因子:
--
作者:
A. Savcheva;A. West;J. Bochanski
通讯作者:
A. Savcheva;A. West;J. Bochanski
影响因子:
4.8
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通讯作者:
S. Parsons;B. Gänsicke;T. Marsh;R. Ashley;M. Bours;E. Breedt;M. Burleigh;C. Copperwheat;V. Dhillon;M. Green;L. Hardy;J. Hermes;P. Irawati;P. Kerry;S. Littlefair;M. Mcallister;S. Rattanasoon;A. Rebassa-Mansergas;D. Sahman;M. Schreiber
DOI:
10.1046/j.1365-8711.2002.05038.x
发表时间:
2002-01
影响因子:
4.8
作者:
J. Hurley;C. Tout;O. Pols
通讯作者:
J. Hurley;C. Tout;O. Pols
DOI:
10.3847/0004-6256/152/6/153
发表时间:
2016-07
期刊:
The Astronomical Journal
影响因子:
--
作者:
W. Jao;E. Nelan;T. Henry;O. Franz;L. Wasserman
通讯作者:
W. Jao;E. Nelan;T. Henry;O. Franz;L. Wasserman