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  • Seminars and Workshops
  • Institute of Astronomy and Astrophysics
CSFD: An Improved Milky Way Dust Map

2023-09-04 12:00 - 12:40

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CSFD: An Improved Milky Way Dust Map

Abstract

The Schlegel et al. (1998) Galactic dust reddening map, or the so-called SFD map, has been instrumental for observational astronomy, as extinction correction is needed for accurate photometry in the UV, optical, and near-IR. However, it is known that the SFD map is contaminated by the cosmic infrared background (CIB) due to unresolved dusty galaxies in the large-scale structure, and such a systematic can impact a wide range of precision cosmology experiments. In this talk, I will provide a solution to remove the CIB in SFD, which leads to CSFD, a new, full-sky reddening map that traces the Milky Way dust more faithfully and accurately.