来自盖亚eDR3的新热亚矮星变量

Q3 Multidisciplinary

Bulletin de la Societe Royale des Sciences de Liege Pub Date : 2023-01-01 DOI:10.25518/0037-9565.11220

Isaac D. LOPEZ, Alekzander KOSAKOWSKI, Brad N. BARLOW, Thomas KUPFER

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引用次数: 0

摘要

我们利用麦当劳天文台的兹威基瞬变设施DR9和2.1 m奥托·斯特鲁夫望远镜，研究了盖亚eDR3中新的变热亚矮星。我们报告了22个HW Vir双星，24个反射效应双星和14个椭球调制系统的发现。高速观测候选者的选择是基于目标在盖亚彩色星等图上的位置和我们从盖亚G通量不确定性中估计的内在变异性。值得注意的发现包括候选周期为72分钟的sdB+WD双星和两个周期为67分钟和79分钟的短周期HW Vir双星，其中包括迄今为止发现的周期最短的sdB+dM/BD。

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New Hot Subdwarf Variables from Gaia eDR3

We present a search for new variable hot subdwarfs from Gaia eDR3 using the Zwicky Transient Facility DR9 and the 2.1 m Otto Struve Telescope at McDonald Observatory. We report the discovery of 22 HW Vir binaries, 24 reflection effect binaries, and 14 ellipsoidally modulated systems. Candidate selection for our high-speed observations was based on object location on the Gaia color-magnitude diagram and on intrinsic variability, which we estimate from the Gaia G flux uncertainties. Notable discoveries include a candidate 72 min period sdB+WD binary and two short period HW Vir binaries with periods around 67 min and 79 min, which includes the shortest-period eclipsing sdB+dM/BD discovered to date.

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来源期刊

Bulletin de la Societe Royale des Sciences de Liege Multidisciplinary-Multidisciplinary

CiteScore

0.90

自引率

0.00%

发文量

期刊介绍： The ‘Société Royale des Sciences de Liège" (hereafter the Society) regularly publishes in its ‘Bulletin" original scientific papers in the fields of astrophysics, biochemistry, biophysics, biology, chemistry, geology, mathematics, mineralogy or physics, following peer review approval.