The EDGE-CALIFA survey: the influence of galactic rotation on the molecular depletion time across the Hubble sequence

Abstract

We present a kpc-scale analysis of the relationship between the molecular depletion time (${\tau }_{\mathrm{dep}}^{\mathrm{mol}}$) and the orbital time (${\tau }_{\mathrm{orb}}$) across the field of 39 face-on local galaxies, selected from the EDGE-CALIFA sample. We find that, on average, 5% of the available molecular gas is converted into stars per orbital time, or ${\tau }_{\mathrm{dep}}^{\mathrm{mol}}\sim 20{\tau }_{\mathrm{orb}}$. The resolved relation shows a scatter of $\sim 0.5$ dex. The scatter is ascribable to galaxies of different morphologies that follow different ${\tau }_{\mathrm{dep}}^{\mathrm{mol}}-{\tau }_{\mathrm{orb}}$ relations which decrease in steepness from early- to late-types. The morphologies appear to be linked with the star formation rate surface density, the molecular depletion time, and the orbital time, but they do not correlate with the molecular gas content of the galaxies in our sample. We speculate that in our molecular gas rich, early-type galaxies, the morphological quenching (in particular the disc stabilization via shear), rather than the absence of molecular gas, is the main factor responsible for their current inefficient star formation.

18 pages, 11 figures, accepted for publication in MNRAS

References in corpus (17)

• Cosmic Star Formation History
• Theory of Star Formation
• Overview of the SDSS-IV MaNGA Survey: Mapping Nearby Galaxies at Apache Point Observatory
• HyperLEDA. III. The catalogue of extragalactic distances
• The Role of Pressure in GMC Formation II: The H_2 - Pressure Relation
• Measuring the inclination and mass-to-light ratio of axisymmetric galaxies via anisotropic Jeans models of stellar kinematics
• The SAMI Galaxy Survey: instrument specification and target selection
• COLD GASS, an IRAM Legacy Survey of Molecular Gas in Massive Galaxies: II. The non-universality of the Molecular Gas Depletion Timescale
• Star Formation in Disk Galaxies. I. Formation and Evolution of Giant Molecular Clouds via Gravitational Instability and Cloud Collisions
• Reconstructing the Subsurface Three-Dimensional Magnetic Structure of A Solar Active Region Using SDO/HMI Observations
• CALIFA: a diameter-selected sample for an integral field spectroscopy galaxy survey
• CALIFA, the Calar Alto Legacy Integral Field Area survey. III. Second public data release
• The ATLAS3D Project - XXVIII. Dynamically-driven star formation suppression in early-type galaxies
• Short GMC lifetimes: an observational estimate with the PdBI Arcsecond Whirlpool Survey (PAWS)
• Mid- to Far-IR Emission and Star Formation in Early-Type Galaxies
• A Test of Star Formation Laws in Disk Galaxies. II. Dependence on dynamical properties
• The inner mass distribution of late-type spiral galaxies from SAURON stellar kinematic maps

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