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Dense Gas, Dynamical Equilibrium Pressure, and Star Formation in Nearby Star-forming Galaxies

Gallagher, Molly; Leroy, Adam K.; Bigiel, Frank; Cormier, Diane; Jimenez-Donaire, Maria J.; Ostriker, Eve C.; Usero, Antonio; Bolatto, Alberto; García-Burillo, Santiago; Hughes, Annie; Kepley, Amanda A.; Krumholz, Mark; Meidt, Sharon E.; Meier, David; Murphy, Eric; Pety, Jerome; Rosolowsky, Erik; Schinnerer, Eva; Schruba, Andreas; Walter, Fabian; Hughes, A.


We use new ALMA observations to investigate the connection between dense gas fraction, star formation rate (SFR), and local environment across the inner region of four local galaxies showing a wide range of molecular gas depletion times. We map HCN (1–0), HCO+ (1–0), CS (2–1), 13CO (1–0), and C18O (1–0) across the inner few kiloparsecs of each target. We combine these data with short-spacing information from the IRAM large program EMPIRE, archival CO maps, tracers of stellar structure and...[Show more]

CollectionsANU Research Publications
Date published: 2018-05-10
Type: Journal article
Source: The Astrophysical Journal
DOI: 10.3847/1538-4357/aabad8
Access Rights: Open Access


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