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New results from the UVIT survey of the Andromeda galaxy
Journal of Astrophysics and Astronomy ( IF 1.1 ) Pub Date : 2021-07-24 , DOI: 10.1007/s12036-020-09682-3
D. A. Leahy 1 , J. Postma 1 , M. Buick 1 , C. Morgan 1 , L. Bianchi 2 , J. Hutchings 3
Affiliation  

The Andromeda galaxy (M31) has been observed with the UltraViolet Imaging Telescope (UVIT) instrument onboard the AstroSat Observatory. The M31 sky area was covered with 19 fields, in multiple UV filters per field, over the period of 2017 to 2019. The entire galaxy was observed in the FUV F148W filter, and more than half observed in the NUV filters. A new calibration and data processing is described which improves the astrometry and photometry of the UVIT data. The high spatial resolution of UVIT (\(\sim \)1 arcsec) and new astrometry calibration (\(\sim \)0.2 arcsec) allow identification of UVIT sources with stars, star clusters, X-ray sources, and other source types within M31 to a much better level than previously possible. We present new results from matching UVIT sources with stars measured as part of the Pan-chromatic Hubble Andromeda Treasury project in M31.



中文翻译:

UVIT 对仙女座星系的调查的新结果

已使用 AstroSat 天文台上的紫外成像望远镜 (UVIT) 仪器观测到仙女座星系 (M31)。在 2017 年至 2019 年期间,M31 天空区域覆盖了 19 个视场,每个视场有多个紫外线过滤器。在 FUV F148W 过滤器中观察到整个星系,在 NUV 过滤器中观察到一半以上。描述了一种新的校准和数据处理,它改进了 UVIT 数据的天体测量和光度测量。UVIT 的高空间分辨率(\(\sim \) 1 arcsec)和新的天体测量校准(\(\sim \)0.2 弧秒)允许以比以前更好的水平识别 M31 内带有恒星、星团、X 射线源和其他源类型的 UVIT 源。我们展示了将 UVIT 源与作为 M31 中泛色哈勃仙女座财政部项目的一部分测量的恒星进行匹配的新结果。

更新日期:2021-07-24
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