SRG/ART-XC Galactic Plane Survey near Galactic Longitude L ≃ 20°: Catalog of Sources

被引：0
|
作者：
Karasev, D. I. [1 ]
Semena, A. N. [1 ]
Mereminskiy, I. A. [1 ]
Lutovinov, A. A. [1 ]
Burenin, R. A. [1 ]
Krivonos, R. A. [1 ]
Sazonov, S. Yu. [1 ]
Arefiev, V. A. [1 ]
Buntov, M. V. [1 ]
Lapshov, I. Yu. [1 ]
Levin, V. V. [1 ]
Pavlinsky, M. N. [1 ]
Tkachenko, A. Yu. [1 ]
Shtykovsky, A. E. [1 ]
机构：
[1] Russian Acad Sci, Space Res Inst, Moscow 117997, Russia
来源：
ASTRONOMY LETTERS-A JOURNAL OF ASTRONOMY AND SPACE ASTROPHYSICS | 2023年 / 49卷 / 11期
关键词：
Galactic plane; X-ray sky surveys; catalog of sources; SRGA J183220.1-103508; CXOGSG J183220.8-103510; IGR J18214-1318; THERMONUCLEAR; COMPILATION;
D O I：
10.1134/S1063773723110038
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present a catalog of sources detected by the Mikhail Pavlinsky ART-XC telescope onboard the SRG space observatory during the observations of the Galactic plane region near a longitude l similar or equal to 20(degrees) (L20 field) in October 2019. The L20 field was observed four times in the scanning mode, which provided a uniform coverage of the sky region with a total area of similar or equal to 24 deg(2) with a median sensitivity of 8x10(-13) erg s(-1) cm(-2) (at 50% detection completeness) in the 4-12 keV energy band. As a result, we have detected 29 X-ray sources at a statistically significant level, 11 of which have not been detected previously by other X-ray observatories. Preliminary estimates show that four of them can presumably be extragalactic in nature. We also show that the source SRGA J183220.1-103508 (CXOGSG J183220.8-103510) is most likely a galaxy cluster containing a bright radio galaxy at redshift z similar or equal to 0.121.
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收藏
页码：662 / 672
页数：11
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