SRG/ART-XC 银经 $l\simeq20^\circ$ 附近银道面巡天：源表
SRG/ART-XC Galactic Plane Survey near Galactic Longitude $l\simeq20^\circ$: Catalog of Sources
AI总结：
本研究发布SRG天文台ART-XC望远镜对银经20度附近银道面的巡天源表，探测到29个X射线源含11个新源，还识别出一个含明亮射电星系的星系团候选体。
摘要：
我们发布了SRG（Spektr-RG，光谱-伦琴伽马）空间天文台搭载的Mikhail Pavlinsky ART-XC望远镜于2019年10月观测银经$l\simeq20$度附近银道面区域（L20天区）时探测到的源表。L20天区以扫描模式被观测了4次，实现了对总面积约24平方度天区的均匀覆盖，在4-12 keV能段的中值灵敏度为$8\times10^{-13}$ erg s$^{-1}$ cm$^{-2}$（对应50%探测完备度）。最终我们在统计显著水平上探测到29个X射线源，其中11个此前未被其他X射线天文台探测到。初步估计显示，其中4个源可能属于河外起源。我们还表明，源SRGA J183220.1$-$103508（CXOGSG J183220.8$-$103510）极有可能是一个星系团，其中包含一个红移$z\simeq0.121$的明亮射电星系。
英文摘要：
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 $l\simeq20$ deg (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 $\simeq24$ sq. deg with a median sensitivity of $8\times10^{-13}$ erg s$^{-1}$ cm$^{-2}$ (at 50% detection completeness) in the 4$-$12 keV. As a result, we have detected 29 X-ray sources at a statistically significant level, 11 of which have not been detected previously by other X-ray observatories. Preliminary estimates show that four of them can presumably be extragalactic in nature. We also show that the source SRGA J183220.1$-$103508 (CXOGSG J183220.8$-$103510), is most likely a galaxy cluster containing a bright radio galaxy at redshift $z\simeq0.121$.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
