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Searching for Accreting Compact Object Binaries in SRG/eROSITA eRASS1

文献类型：期刊论文

作者Liu, Hao-Bin1; Gu, Wei-Min1; Lu, Yongqi1; Liu, Teng3; Liu, Jin-Zhong2
刊名ASTROPHYSICAL JOURNAL
出版日期2025-10-01
卷号991期号:2页码:125
ISSN号0004-637X
DOI10.3847/1538-4357/adfecd
产权排序3
英文摘要Compact object binaries with accreting white dwarfs, neutron stars, or black holes are crucial for understanding accretion physics. In this study, we identify accreting compact object binary candidates in the Spectrum-Roentgen-Gamma/eROSITA eRASS1 by combining their X-ray fluxes with Gaia photometry and Zwicky Transient Facility (ZTF) time-domain observations. Candidates are selected based on their location in the "X-ray Main Sequence," a diagram incorporating their X-ray-to-optical flux ratios and optical colors, which suggest accretion-driven X-ray emission. We identify 22 candidates in the eRASS1 catalog using a three-step selection process: (1) cross-matching to a unique Gaia optical counterpart within a 10 '' radius; (2) requiring X-ray-to-optical flux ratios exceeding the "X-ray Main Sequence"; and (3) detecting short-period variability in ZTF time-domain photometry. The resulting 22 candidates, including two previously confirmed compact object binaries, represent promising candidates for spectroscopic follow-up to confirm their accreting nature. Our results demonstrate the effectiveness of combining X-ray-to-optical flux ratios and optical colors jointly with time-domain photometry to uncover accreting compact object binaries. The approach is scalable and adaptable to future multiwavelength sky surveys, offering a promising path toward a more complete census of compact object binaries in the Galaxy.
WOS关键词ALL-SKY SURVEY ; X-RAY BINARIES ; CATACLYSMIC VARIABLES ; BLACK-HOLES ; STARS ; CATALOG ; IDENTIFICATION ; POPULATION ; DENSITY ; GALAXY
资助项目National Natural Science Foundation of China[12433007] ; National Natural Science Foundation of China[12221003] ; National Natural Science Foundation of China[12393814] ; Tianshan Talent Training Program[2023TSYCCX0101] ; China Manned Space Project[CMS-CSST-2025-A13] ; Russian Space Agency (Roskosmos) ; Deutsches Zentrum fuer Luft- und Raumfahrt (DLR) ; Max Planck Institute for Extraterrestrial Physics (MPE) ; University of Hamburg Observatory ; Leibniz Institute for Astrophysics Potsdam (AIP) ; Institute for Astronomy and Astrophysics of the University of Tuebingen ; DLR ; Max Planck Society ; U.S. National Science Foundation through the Mid-Scale Innovations Program (MSIP)
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001575942900001
出版者IOP Publishing Ltd
资助机构National Natural Science Foundation of China ; Tianshan Talent Training Program ; China Manned Space Project ; Russian Space Agency (Roskosmos) ; Deutsches Zentrum fuer Luft- und Raumfahrt (DLR) ; Max Planck Institute for Extraterrestrial Physics (MPE) ; University of Hamburg Observatory ; Leibniz Institute for Astrophysics Potsdam (AIP) ; Institute for Astronomy and Astrophysics of the University of Tuebingen ; DLR ; Max Planck Society ; U.S. National Science Foundation through the Mid-Scale Innovations Program (MSIP)
源URL[http://ir.xao.ac.cn/handle/45760611-7/8182]  
专题光学天文与技术应用研究室_变星研究团组
通讯作者Gu, Wei-Min
作者单位1.Xiamen Univ, Dept Astron, Xiamen 361005, Fujian, Peoples R China
2.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China
3.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Anhui, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Hao-Bin,Gu, Wei-Min,Lu, Yongqi,et al. Searching for Accreting Compact Object Binaries in SRG/eROSITA eRASS1[J]. ASTROPHYSICAL JOURNAL,2025,991(2):125.
APA Liu, Hao-Bin,Gu, Wei-Min,Lu, Yongqi,Liu, Teng,&Liu, Jin-Zhong.(2025).Searching for Accreting Compact Object Binaries in SRG/eROSITA eRASS1.ASTROPHYSICAL JOURNAL,991(2),125.
MLA Liu, Hao-Bin,et al."Searching for Accreting Compact Object Binaries in SRG/eROSITA eRASS1".ASTROPHYSICAL JOURNAL 991.2(2025):125.

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来源：新疆天文台

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