论文标题
榆树调查。 ix。 SDSS足迹中低质量白矮人二进制文件的完整样本
The ELM Survey. IX. A Complete Sample of Low Mass White Dwarf Binaries in the SDSS Footprint
论文作者
论文摘要
我们从持续的搜索极低的质量（ELM）<0.3 MSUN WDS中发现了17个双白矮人（WD）二进制文件，这是由二进制进化形成的对象。 Gaia Alallax提供了一种新的目标选择手段，我们用来评估我们的原始ELM调查选择标准。与Gaia和Sloan Digital Sky Survey（SDSS）目录进行交叉匹配，我们确定了另外36个ELM WD候选者，其中17 <g <19 mag以及在我们原始颜色选择的3-sigma不确定性中。最终的发现暗示ELM调查样本在颜色范围内完成了90％-0.4 <（g -r）_0 <-0.1 mag（约9,000 k <teff <22,000 k）。我们的观察结果在SDSS足迹中完成了样本。两个新发现的二进制文件，J123950.370-204142.28和J232208.733+210352.81，轨道周期分别为22.5分钟和32分钟，是未来的Lisa重力波源。
We present the discovery of 17 double white dwarf (WD) binaries from our on-going search for extremely low mass (ELM) <0.3 Msun WDs, objects that form from binary evolution. Gaia parallax provides a new means of target selection that we use to evaluate our original ELM Survey selection criteria. Cross-matching the Gaia and Sloan Digital Sky Survey (SDSS) catalogs, we identify an additional 36 ELM WD candidates with 17<g<19 mag and within the 3-sigma uncertainties of our original color selection. The resulting discoveries imply the ELM Survey sample was 90% complete in the color range -0.4 < (g-r)_0 < -0.1 mag (approximately 9,000 K < Teff < 22,000 K). Our observations complete the sample in the SDSS footprint. Two newly discovered binaries, J123950.370-204142.28 and J232208.733+210352.81, have orbital periods of 22.5 min and 32 min, respectively, and are future LISA gravitational wave sources.
