Shocked POststarburst Galaxy Survey II: The Molecular Gas Content and Properties of a Subset of SPOGs

摘要: We present CO(1-0) observations of objects within the Shocked POststarburst Galaxy Survey taken with Institut de Radioastronomie Millimetrique (IRAM) 30m single dish and Combined Array for Research Millimeter Astronomy (CARMA) interferometer. Poststarburst Galaxies (SPOGs) represent a transitioning population galaxies, deep Balmer absorption (Hdelta>5A), consistent an intermediate-age (A-star) stellar population, ionized gas line ratios inconsistent pure star formation. The subsample was selected from SPOGs detected by Wide-field Infrared Explorer 22um flux at signal-to-noise (S/N)>3. Of 52 observed in CO(1-0), 47 are S/N>3. A large fraction (37-46%) our CO-SPOG sample were visually classified as morphologically disrupted. H2 masses between 10^(8.7-10.8) Msuns, found normal though approximately order magnitude larger than range seen poststarburst galaxies. When comparing fluxes, diverge star-forming relation, having fluxes excess factor =4.91+0.42-0.39. Na I D characteristics CO-SPOGs show that it is likely many these host interstellar winds. Objects enhancements also tend to emit radio, suggesting possible AGN-driving neutral