Wide-Field Survey of Dwarf Satellite Systems Around 10 Hosts in the Local Volume
Scott G. Carlsten, Johnny P. Greco, Rachael L. Beaton, Jenny E. Greene

TL;DR
This study conducted a wide-field survey of dwarf satellite galaxies around 10 nearby host galaxies, detecting 153 candidates with many being new discoveries, thereby expanding the understanding of satellite populations in the Local Volume.
Contribution
It provides a uniform, semi-automated detection of low surface brightness satellites around diverse hosts within 12 Mpc, increasing the surveyed area and candidate count compared to previous studies.
Findings
Detected 153 satellite candidates, 93 of which are new.
Surveyed areas roughly double previous efforts at similar luminosity levels.
Candidates are mostly red, spheroid systems consistent with known satellites.
Abstract
We present the results of an extensive search for dwarf satellite galaxies around 10 primary host galaxies in the Local Volume (D12 Mpc) using archival CFHT/MegaCam imaging data. The hosts span a wide range in properties, with stellar masses ranging from that of the LMC to times that of the Milky Way (MW). The surveyed hosts are: NGC 1023, NGC 1156, NGC 2903, NGC 4258, NGC 4565, NGC 4631, NGC 5023, M51, M64, and M104. We detect satellite candidates using a consistent semi-automated detection algorithm that is optimized for the detection of low surface brightness objects. Depending on the host, our completeness limit is to (assuming the distance of the host). We detect objects with surface brightness down to mag arcsec at completeness. The survey areas of the six best-surveyed hosts cover most of the inner…
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