论文标题
ZTF中的四个新的深层白矮人
Four new deeply-eclipsing white dwarfs in ZTF
论文作者
论文摘要
我们介绍了搜索ZTF数据版本4中深层挖掘的白色矮人的结果。我们确定了九种深层挖掘的白矮人候选者，其中四个我们跟进了高振动光度法和光谱法。这些系统中有三个显示了ZTF数据中的总黯淡，我们的后续APO 3.5米望远镜观测值。即使日食持续时间与子策略伴侣一致，我们的分析表明，所有四个系统都包含一个白色矮人，低质量恒星伴侣约为0.1 msol。我们根据我们的光度和光谱拟合为每个系统中的两个恒星提供质量和半径约束。最后，我们介绍了在对ZTF DR7的初步搜索中确定的41个额外黯然失色的WD+M候选者的列表，其中包括12个先前研究的系统。我们在基于Panstarrs颜色的41个WD+M候选样本中确定了两个新的候选短期，黯然失色的白色矮人矮矮人二进制文件。
We present the results of a search for deeply-eclipsing white dwarfs in the ZTF Data Release 4. We identify nine deeply-eclipsing white dwarf candidates, four of which we followed up with high-cadence photometry and spectroscopy. Three of these systems show total eclipses in the ZTF data and our follow-up APO 3.5-meter telescope observations. Even though the eclipse duration is consistent with sub-stellar companions, our analysis shows that all four systems contain a white dwarf with low-mass stellar companions of ~0.1 Msol. We provide mass and radius constraints for both stars in each system based on our photometric and spectroscopic fitting. Finally, we present a list of 41 additional eclipsing WD+M candidates identified in a preliminary search of ZTF DR7, including 12 previously studied systems. We identify two new candidate short-period, eclipsing, white dwarf-brown dwarf binaries within our sample of 41 WD+M candidates based on PanSTARRS colors.
