Kavli Affiliate: Subo Dong
| First 5 Authors: Evan Jennerjahn, Michael A. Tucker, Benjamin J. Shappee, Christopher S. Kochanek, Subo Dong
| Summary:
The ASAS-SN Low Surface Brightness Survey utilizes the $sim7$ years of
g-band CCD data from ASAS-SN (The All-Sky Automated Survey for Supernovae) to
create stacked images of the entire sky. It is significantly deeper than
previous photographic surveys. Our median/95th percentile cumulative exposure
time per field is 58.1/86.8 hours, and our median $3{sigma}$ g-band surface
brightness limit off the Galactic plane ($|b| > 20{deg}$) is 26.1 mag
arcsec$^{-2}$. We image large-scale diffuse structures within the Milky Way,
such as multiple degree-spanning supernova remnants and star-forming nebulae,
and tidal features of nearby galaxies. To quantify how effective our deep
images are, we compare with a catalog of known ultra-diffuse galaxies and find
a recovery rate of 82$%$. In the future, we intend to use this data set to
perform an all-sky search for new nearby dwarf galaxies, create an all-sky
Galactic cirrus map, create an all-sky low surface brightness mosaic for public
use, and more.
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