RT Journal Article
T1 IC 3418: Star formation in a turbulent wake
A1 Hester, Janice A.
A1 Seibert, Mark
A1 Neill, James D.
A1 Wyder, Ted K.
A1 Gil de Paz, Armando
A1 Madore, Barry F.
A1 Martin, D. Christopher
A1 Schiminovich, David
A1 Rich, R. Michael
AB Galaxy Evolution Explorer observations of IC 3418, a low surface brightness galaxy in the Virgo Cluster, revealed a striking 17 kpc UV tail of bright knots and diffuse emission. Hα imaging confirms that star formation is ongoing in the tail. IC 3418 was likely recently ram pressure stripped on its first pass through Virgo. We suggest that star formation is occurring in molecular clouds that formed in IC 3418's turbulent stripped wake. Tides and ram pressure stripping (RPS) of molecular clouds are both disfavored as tail formation mechanisms. The tail is similar to the few other observed star-forming tails, all of which likely formed during RPS. The tails' morphologies reflect the forces present during their formation and can be used to test for dynamical coupling between molecular and diffuse gas, thereby probing the origin of the star-forming molecular gas.
PB IOP Publishing
SN 2041-8205
YR 2010
FD 2010-06-10
LK https://hdl.handle.net/20.500.14352/44887
UL https://hdl.handle.net/20.500.14352/44887
LA eng
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NO © 2010. The American Astronomical Society. All rights reserved. This research has made use of the GOLD Mine Database of the NASA/IPAC Extragalactic Database (NED) which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. The authors thank L. Cortese for helpful comments.
NO National Aeronautics and Space Administration (NASA)
DS Docta Complutense
RD 6 may 2024