Bright Southern Variable Stars in the bRing Survey

The corresponding data and plots for the 353 variables in the comprehensive survey of bright stars from the bRing telescopes. The paper has been accepted to the Astrophysical Journal Supplemental Series (July 27, 2019). An arXiv pre-print article is now available. If these data are to be used in future works, we ask that a short list of the bRing team be included as co-authors. Please contact Samuel Mellon ([e-mail]) or Matthew Kenworthy ([e-mail]) for details. Paper Abstract: Besides monitoring the bright star <em>β</em> Pic during the near transit event for its giant exoplanet, the <em>β</em> Pictoris b Ring (bRing) observatories at Siding Springs Observatory, Australia and Sutherland, South Africa have monitored the brightnesses of bright stars (<em>V</em> ≃ 4--8 mag) centered on the south celestial pole (<em>δ</em> ≤ -30∘) for approximately two years. Here we present a comprehensive study of the bRing time series photometry for bright southern stars monitored between 2017 June and 2019 January. Of the 16762 stars monitored by bRing, 353 of them were found to be variable. Of the variable stars, 80% had previously known variability and 20% were new variables. Each of the new variables was classified, including 3 new eclipsing binaries (HD 77669, HD 142049, HD 155781), 26 <em>δ</em> Scutis, 4 slowly pulsating B stars, and others. This survey also reclassified four stars based on their period of pulsation, light curve, spectral classification, and color-magnitude information. The survey data were searched for new examples of transiting circumsecondary disk systems, but no candidates were found.

本数据集涵盖bRing望远镜开展的亮星综合巡天中353颗变星的对应数据与绘图。相关论文已于2019年7月27日被《天体物理学杂志增刊》（Astrophysical Journal Supplemental Series）接收，目前已公开arXiv预印本。若后续研究使用本数据集，请将bRing团队简表列为共同作者。详情可联系Samuel Mellon（邮箱：[e-mail]）或Matthew Kenworthy（邮箱：[e-mail]）咨询。

论文摘要：除了在β绘架座β星（β Pic）临近其巨系外行星凌星事件期间对其开展监测外，位于澳大利亚赛丁泉天文台、南非萨瑟兰的β绘架座b环（bRing）观测站，还对以南天极为中心（赤纬δ ≤ -30°）、视星等V≈4~8等的亮星进行了约两年的亮度监测。本文呈现了2017年6月至2019年1月期间，对南天亮星的bRing时间序列测光的综合研究成果。在bRing监测的16762颗恒星中，共发现353颗变星。其中80%为已有报道的变星，20%为新发现变星。我们对所有新变星进行了分类，包括3颗新食双星（HD 77669、HD 142049、HD 155781）、26颗盾牌座δ型变星（δ Scutis）、4颗慢脉动B型星，以及其他类型变星。本次巡天还基于脉动周期、光变曲线、光谱分类和色星等信息，对4颗恒星进行了重新分类。此外，我们在本次巡天数据中搜寻了凌星环次星盘系统的新候选体，但未发现符合条件的目标。