Tidal Streams around External Galaxies
M.Pohlen (1), D.Martinez-Delgado (2,1), S.Majewski (3), C.Palma (4),, F.Prada (1), and M.Balcells (1) ((1) Instituto de Astrofisica de Canarias,, (2) Max-Planck-Institut fuer Astronomie, (3) University of Virginia (4) Penn, State University)
TL;DR
This paper reviews and reports new detections of stellar tidal streams around external galaxies, including the first surface brightness measurement of M83's stream, to better understand galaxy evolution.
Contribution
It provides the first surface brightness measurement of M83's stream and reports four new potential stellar streams around disk galaxies, expanding knowledge beyond the Local Group.
Findings
First surface brightness measurement of M83 stream.
Four new candidate stellar streams detected.
Supports the universality of tidal streams around galaxies.
Abstract
We have the unique opportunity to observe and model nearby streams around the two large Local Group spirals Milky Way and M31 in great detail. However, the detection of streams around other external galaxies is required to verify the general application of the derived results. We give a short summary of streams around other galaxies known in the literature, measuring for the first time the surface brightness of Malin's M83 stream with modern CCD imaging. In addition, we present four new detections of possible stellar streams around disk galaxies.
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Taxonomy
TopicsImpact of Light on Environment and Health · Galaxies: Formation, Evolution, Phenomena · History and Developments in Astronomy