当前位置: X-MOL 学术Astron. J. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
A Systematic Search for Outbursting AM CVn Systems with the Zwicky Transient Facility
The Astronomical Journal ( IF 5.3 ) Pub Date : 2021-08-19 , DOI: 10.3847/1538-3881/ac0622
Jan van Roestel 1 , Leah Creter 1, 2 , Thomas Kupfer 3 , Paula Szkody 4 , Jim Fuller 1 , Matthew J. Green 5 , R. Michael Rich 6 , John Sepikas 2 , Kevin Burdge 1 , Ilaria Caiazzo 1 , Przemek Mrz 1 , Thomas A. Prince 1 , Dmitry A. Duev 1 , Matthew J. Graham 1 , David L. Shupe 7 , Russ R. Laher 7 , Ashish A. Mahabal 1, 8 , Frank J. Masci 7
Affiliation  

AM CVn systems are a rare type of accreting binary that consists of a white dwarf and a helium-rich, degenerate donor star. Using the Zwicky Transient Facility (ZTF), we searched for new AM CVn systems by focusing on blue, outbursting stars. We first selected outbursting stars using the ZTF alerts. We cross matched the candidates with Gaia and Pan-STARRS catalogs. The initial selection of candidates based on the Gaia BP-RP contains 1751 unknown objects. We used the Pan-STARRS g-r and r-i color in combination with the Gaia color to identify 59 strong AM CVn candidates. We obtained identification spectra of 35 sources, of which 18 are high-priority candidates, and discovered nine new AM CVn systems and one magnetic CV that shows only He-ii lines. Using the outburst recurrence time, we estimate the orbital periods of the nine new AM CVn systems that are in the range of 29–50 minutes. We conclude that targeted follow up of blue, outbursting sources is an efficient method to find new AM CVn systems and we plan to follow up all candidates we identified to systematically study the population of outbursting AM CVn systems.



中文翻译:

使用 Zwicky 瞬态设施系统搜索突发 AM CVn 系统

AM CVn 系统是一种罕见的吸积双星,由一颗白矮星和一颗富含氦的简并供体星组成。使用 Zwicky Transient Facility (ZTF),我们通过关注蓝色、爆发的恒星来搜索新的 AM CVn 系统。我们首先使用 ZTF 警报选择了爆发的恒星。我们将候选者与 Gaia 和 Pan-STARRS 目录交叉匹配。基于 Gaia BP-RP 的候选初始选择包含 1751 个未知对象。我们使用了 Pan-STARRS g - rr - i颜色结合 Gaia 颜色来识别 59 个强 AM CVn 候选者。我们获得了 35 个源的识别光谱,其中 18 个是高优先级候选源,并发现了 9 个新的 AM CVn 系统和一个仅显示 He- ii线的磁 CV 。使用爆发重现时间,我们估计了 9 个新的 AM CVn 系统的轨道周期在 29-50 分钟的范围内。我们得出的结论是,有针对性地跟踪蓝色爆发源是寻找新 AM CVn 系统的有效方法,我们计划跟踪我们确定的所有候选者,以系统地研究爆发 AM CVn 系统的群体。

更新日期:2021-08-19
down
wechat
bug