论文标题
WD1032+011,旧的Eclips like二进制的棕色矮人与白色矮人
WD1032+011, an inflated brown dwarf in an old eclipsing binary with a white dwarf
论文作者
论文摘要
我们只提出仅发现的第三个棕色矮人,即蚀是一个非挑剔的白色矮人。 Gaia视差信息和多色光度法证实,白色矮人很酷(9950 $ \ pm $ 150k),质量低(0.45 $ \ pm $ 0.05〜msun),Spectra and Lightcurves表明,Brown Dwarf的质量为0.067 $ \ pm $ \ $ 0.006毫秒$ $ $ $ 1 $ 1 l5 $ l5 $ l5 $ 1 l5)和一份。该系统的运动学表明,二进制可能是厚磁盘的成员,因此至少是5 Gyr Old。高节奏的光曲面表明,棕色矮人被膨胀,使其成为黯然失色的白色矮人棕色矮人二元的第一个棕色矮人。
We present the discovery of only the third brown dwarf known to eclipse a non-accreting white dwarf. Gaia parallax information and multi-colour photometry confirm that the white dwarf is cool (9950$\pm$150K) and has a low mass (0.45$\pm$0.05~MSun), and spectra and lightcurves suggest the brown dwarf has a mass of 0.067 $\pm$0.006 MSun (70 MJup) and a spectral type of L5 $\pm$1. The kinematics of the system show that the binary is likely to be a member of the thick disk and therefore at least 5 Gyr old. The high cadence lightcurves show that the brown dwarf is inflated, making it the first brown dwarf in an eclipsing white dwarf-brown dwarf binary to be so.