Resolved Dwarf galaxy searches within ∼5Mpc with the Vera Rubin observatory and subaru hyper suprime-cam
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Author
Mutlu-Pakdil, B.Sand, D.J.
Crnojević, D.
Drlica-Wagner, A.
Caldwell, N.
Guhathakurta, P.
Seth, A.C.
Simon, J.D.
Strader, J.

Toloba, E.

Affiliation
Steward Observatory, University of ArizonaIssue Date
2021
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IOP Publishing LtdCitation
Mutlu-Pakdil, B., Sand, D. J., Crnojević, D., Drlica-Wagner, A., Caldwell, N., Guhathakurta, P., Seth, A. C., Simon, J. D., Strader, J., & Toloba, E. (2021). Resolved Dwarf galaxy searches within ∼5Mpc with the Vera Rubin observatory and subaru hyper suprime-cam. Astrophysical Journal, 918(2).Journal
Astrophysical JournalRights
Copyright © 2021. The American Astronomical Society. All rights reserved.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
We present a preview of the faint dwarf galaxy discoveries that will be possible with the Vera C. Rubin Observatory and Subaru Hyper Suprime-Cam in the next decade. In this work, we combine deep ground-based images from the Panoramic Imaging Survey of Centaurus and Sculptor and extensive image simulations to investigate the recovery of faint, resolved dwarf galaxies in the Local Volume with a matched-filter technique. We adopt three fiducial distances (1.5, 3.5, and 5 Mpc) and quantitatively evaluate the effects on dwarf detection of varied stellar backgrounds, ellipticity, and Milky Way foreground contamination and extinction. We show that our matched-filter method is powerful for identifying both compact and extended systems, and near-future surveys will be able to probe at least ∼4.5 mag below the tip of the red giant branch (TRGB) for a distance of up to 1.5 Mpc and ∼2 mag below the TRGB at 5 Mpc. This will push the discovery frontier for resolved dwarf galaxies to fainter magnitudes, lower surface brightnesses, and larger distances. Our simulations show the secure census of dwarf galaxies down to MV ≈ -5, -7, and -8 will soon be within reach, out to 1.5, 3.5, and 5 Mpc, respectively, allowing us to quantify the statistical fluctuations in satellite abundances around hosts and parse environmental effects as a function of host properties. © 2021. The American Astronomical Society. All rights reserved.Note
Immediate accessISSN
0004-637XVersion
Final published versionae974a485f413a2113503eed53cd6c53
10.3847/1538-4357/ac0db8