Characterizing the Molecular Gas in Infrared Bright Galaxies with CARMA

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dc.contributor.authorAlatalo, Katherine
dc.contributor.authorPetric, Andreea O.
dc.contributor.authorLanz, Lauranne
dc.contributor.authorRowlands, Kate
dc.contributor.authorVivian, U.
dc.contributor.authorLarson, Kirsten L.
dc.contributor.authorArmus, Lee
dc.contributor.authorBarcos-Munoz, Loreto
dc.contributor.authorEvans, Aaron S.
dc.contributor.authorKoda, Jin
dc.contributor.authorLuo, Yuanze
dc.contributor.authorMedling, Anne M.
dc.contributor.authorNyland, Kristina E.
dc.contributor.authorOtter, Justin A.
dc.contributor.authorPatil, Pallavi
dc.contributor.authorPenaloza, Fernando
dc.contributor.authorSalim, Diane
dc.contributor.authorSanders, David B.
dc.contributor.authorSazonova, Elizaveta
dc.contributor.authorSkarbinski, Maya
dc.contributor.authorSong, Yiqing
dc.contributor.authorTreister, Ezequiel
dc.contributor.authorUrry, C. Meg
dc.date.accessioned2025-01-20T16:04:36Z
dc.date.available2025-01-20T16:04:36Z
dc.date.issued2024
dc.description.abstractWe present the CO(1-0) maps of 28 infrared-bright galaxies from the Great Observatories All-Sky Luminous Infrared Galaxy Survey (GOALS) taken with the Combined Array for Research in Millimeter Astronomy (CARMA). We detect 100 GHz continuum in 16 of the 28 CARMA GOALS galaxies, which trace both active galactic nuclei (AGNs) and compact star-forming cores. The GOALS galaxies show a variety of molecular gas morphologies, though in the majority of cases the average velocity fields show a gradient consistent with rotation. We fit the full continuum spectral energy distributions (SEDs) of each of the sources using either magphys or SED3FIT (if there are signs of an AGN) to derive the total stellar mass, dust mass, and SFRs of each object. We adopt a value determined from luminous and ultraluminous infrared galaxies (LIRGs and ULIRGs) of alpha CO = 1.5-0.8+1.3 M circle dot (K km s-1 pc2)-1, which leads to more physical values for f mol and the gas-to-dust ratio. Mergers tend to have the highest gas-to-dust ratios. We assume the cospatiality of the molecular gas and star formation and plot the CARMA GOALS sample on the Schmidt-Kennicutt relation, where we find that they preferentially lie above the line set by normal star-forming galaxies. This hyper-efficiency is likely due to the increased turbulence in these systems, which decreases the freefall time compared to star-forming galaxies, leading to "enhanced" star formation efficiency. Line wings are present in a non-negligible subsample (11/28) of the CARMA GOALS sources and are likely due to outflows driven by AGNs or star formation, gas inflows, or additional decoupled gas components.
dc.fuente.origenWOS
dc.identifier.doi10.3847/1538-4357/ad7b31
dc.identifier.eissn1538-4357
dc.identifier.issn0004-637X
dc.identifier.urihttps://doi.org/10.3847/1538-4357/ad7b31
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/89818
dc.identifier.wosidWOS:001349003700001
dc.issue.numero2
dc.language.isoen
dc.revistaAstrophysical journal
dc.rightsacceso restringido
dc.titleCharacterizing the Molecular Gas in Infrared Bright Galaxies with CARMA
dc.typeartículo
dc.volumen975
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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