论文标题
流氓 - iv。从光度测定的候选物中检测新的磁性B型星的新磁性B型星。
MOBSTER -- IV. Detection of a new magnetic B-type star from follow-up spectropolarimetric observations of photometrically selected candidates
论文作者
论文摘要
在本文中，我们介绍了来自Mobster Project的光学计量选择的候选磁B恒星的光谱级随访。在四个观察到的目标中，发现一个（HD 38170）容纳一个可检测到的表面磁场，最大纵向场测量值为105 $ \ pm $ 14 g。该恒星是化学特殊的，并被归类为$α^2 $ CVN变量。它的检测验证了苔丝执行磁性候选物的光度选择的使用。此外，对剩余的三颗恒星的上限是对假定偶极磁场强度的上限，我们报告发现了先前未知的光谱二进制二进制系统，HD 25709。最后，我们将非检测用作案例研究，以进一步使用高标准，以便使用较大的恒星来选择高级频谱。
In this paper, we present results from the spectropolarimetric follow-up of photometrically selected candidate magnetic B stars from the MOBSTER project. Out of four observed targets, one (HD 38170) is found to host a detectable surface magnetic field, with a maximum longitudinal field measurement of 105$\pm$14 G. This star is chemically peculiar and classified as an $α^2$ CVn variable. Its detection validates the use of TESS to perform a photometric selection of magnetic candidates. Furthermore, upper limits on the strength of a putative dipolar magnetic field are derived for the remaining three stars, and we report the discovery of a previously unknown spectroscopic binary system, HD 25709. Finally, we use our non-detections as case studies to further inform the criteria to be used for the selection of a larger sample of stars to be followed up using high-resolution spectropolarimetry.
