SPT-3G 非目标毫米波巡天中的耀星
太阳与恒星天体物理
2025-07-10 v2 星系天体物理
摘要
我们展示了基于南极望远镜（SPT）四年非目标毫米波巡天数据编制的耀星星表。这些数据由 SPT-3G 相机获取，覆盖了天球上赤经从 到 、赤纬从 到 的 1500 平方度区域。该区域在 2019 年至 2022 年间几乎以每日一次的频率被观测，并被选择以避开银河系盘面。对该巡天数据的短时标瞬变源搜索产生了来自 66 颗恒星的 111 次耀发事件，使耀发事件和探测到的耀星数量均比之前的 SPT-3G 数据发布增加了一个数量级。我们提供了与 Gaia DR3 的交叉匹配，以及与第二次 ROSAT 全天巡天中发现的 X 射线点源的匹配。我们探测到的耀星遍布主序带，从早型 A 星到 M 矮星，以及大量的演化恒星。这些恒星大多距离较近，距离范围从 10 到 1000 秒差距。大多数耀发的频谱指数在 95/150/220 GHz 频率上保持恒定或随频率缓慢上升。这些事件的时标从几分钟到几小时不等，在 SPT-3G 频段内的峰值 光度范围从 到 erg s。
引用
@article{arxiv.2401.13525,
title = {Flaring Stars in a Non-targeted mm-wave Survey with SPT-3G},
author = {C. Tandoi and S. Guns and A. Foster and P. A. R. Ade and A. J. Anderson and B. Ansarinejad and M. Archipley and L. Balkenhol and K. Benabed and A. N. Bender and B. A. Benson and F. Bianchini and L. E. Bleem and F. R. Bouchet and L. Bryant and E. Camphuis and J. E. Carlstrom and T. W. Cecil and C. L. Chang and P. Chaubal and P. M. Chichura and T. -L. Chou and A. Coerver and T. M. Crawford and A. Cukierman and C. Daley and T. de Haan and K. R. Dibert and M. A. Dobbs and A. Doussot and D. Dutcher and W. Everett and C. Feng and K. R. Ferguson and K. Fichman and S. Galli and A. E. Gambrel and R. W. Gardner and F. Ge and N. Goeckner-Wald and R. Gualtieri and F. Guidi and N. W. Halverson and E. Hivon and G. P. Holder and W. L. Holzapfel and J. C. Hood and N. Huang and F. Kéruzoré and L. Knox and M. Korman and K. Kornoelje and C. -L. Kuo and A. T. Lee and K. Levy and A. E. Lowitz and C. Lu and A. Maniyar and F. Menanteau and M. Millea and J. Montgomery and Y. Moon and Y. Nakato and T. Natoli and G. I. Noble and V. Novosad and Y. Omori and S. Padin and Z. Pan and P. Paschos and K. A. Phadke and K. Prabhu and Z. Qu and W. Quan and M. Rahimi and A. Rahlin and C. L. Reichardt and C. Reuter and M. Rouble and J. E. Ruhl and E. Schiappucci and G. Smecher and J. A. Sobrin and A. A. Stark and J. Stephen and A. Suzuki and K. L. Thompson and B. Thorne and C. Trendafilova and C. Tucker and C. Umilta and J. D. Vieira and Y. Wan and G. Wang and N. Whitehorn and W. L. K. Wu and V. Yefremenko and M. R. Young and J. A. Zebrowski},
journal= {arXiv preprint arXiv:2401.13525},
year = {2025}
}