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

Casewell, S. L., Belardi, C., Parsons, S. G., Littlefair, S. P., Braker, I. P., Hermes, J. J., Debes, J., Vanderbosch, Z., Burleigh, M. R., Gaensicke, B. T., Dhillon, V. S., Marsh, T. R., Winget, D. E., Winget, K. I.

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.

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