• J. HUTCHINGS

      Articles written in Journal of Astrophysics and Astronomy

    • New results from the UVIT survey of the Andromeda galaxy

      D. A. LEAHY J. POSTMA M. BUICK C. MORGAN L. BIANCHI J. HUTCHINGS

      More Details Abstract Fulltext PDF

      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 isdescribed 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 Panchromatic Hubble Andromeda Treasury project in M31.

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