GOALS: HI Mapping of Local (U)LIRGs

George C. Privon, Aaron S. Evans, John E. Hibbard, Joshua E. Barnes, Raffaella Morganti, Tom Oosterloo, Sabrina Stierwalt, David T. Frayer, Joseph M. Mazzarella, Lee Armus, Ezequiel Treister, [Unknown] Goals



Neutral hydrogen (HI) is one of the major constituents of the interstellar medium in local luminous and ultraluminous infrared galaxy ((U)LIRGs; L_IR > 10^11 L_sun) interactions and mergers. Observations of HI can be used to obtain information on the kinematic state of the interaction, search for evidence of interaction in seeminly unperturbed systems, and constrain the amount of fuel available for future star formation. We present preliminary results from an interferometric HI survey of local (U)LIRGs from the Great Observatories All-sky LIRG Survey (GOALS). Here we focus on observations of a subset of systems with undisturbed stellar morphologies - interpreted as suggesting these galaxies have not been significantly perturbed by tidal interactions. Despite this, they show elevated star formation rates. HI observations of these systems show extended features with mophologies and kinematics consistent with ongoing tidal interaction, suggesting these systems are already experiencing tidal perturbation - likely the cause of the enhanced star formation.
Originele taal-2English
TitelAmerican Astronomical Society Meeting Abstracts
StatusPublished - jan-2015

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