Extreme CO Isotopic Abundances in the ULIRG IRAS 13120-5453: An Extremely Young Starburst or Top-heavy Initial Mass Function

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dc.contributor.authorSliwa, Kazimierz
dc.contributor.authorWilson, Christine D.
dc.contributor.authorAalto, Susanne
dc.contributor.authorPrivon, George C.
dc.date.accessioned2024-01-10T12:05:26Z
dc.date.available2024-01-10T12:05:26Z
dc.date.issued2017
dc.description.abstractWe present ALMA (CO)-C-12 (J = 1-0, 3-2 and 6-5), (CO)-C-13(J = 1-0), and (CO)-O-18 (J = 1-0) observations of the local ultraluminous infrared galaxy (ULIRG) IRAS. 13120-5453. The morphologies of the three isotopic species differ, as (CO)-C-13 shows a hole in emission toward the center. We measure integrated brightness temperature line ratios of (CO)-C-12/(CO)-C-13 >= 60 (exceeding 200) and (CO)-C-13/(CO)-O-18 <= 1 in the central region. Assuming optical thin emission, (CO)-O-18 is more abundant than (CO)-C-13 in several regions. The abundances within the central 500 pc are consistent with the enrichment of the interstellar medium via a young starburst(<7 Myr), a top-heavy initial mass function, or a combination of both.
dc.description.funderFONDECYT Postdoctoral Fellowship
dc.fechaingreso.objetodigital2024-05-30
dc.format.extent6 páginas
dc.fuente.origenWOS
dc.identifier.doi10.3847/2041-8213/aa6ea4
dc.identifier.eissn2041-8213
dc.identifier.issn2041-8205
dc.identifier.urihttps://doi.org/10.3847/2041-8213/aa6ea4
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/76008
dc.identifier.wosidWOS:000400976500001
dc.information.autorucFísica;Privon G;S/I;1031484
dc.issue.numero2
dc.language.isoen
dc.nota.accesoContenido parcial
dc.publisherIOP PUBLISHING LTD
dc.revistaASTROPHYSICAL JOURNAL LETTERS
dc.rightsacceso restringido
dc.subjectgalaxies: abundances
dc.subjectgalaxies: individual (IRAS 13120-5453)
dc.subjectgalaxies: interactions
dc.subjectgalaxies: starburst
dc.subjectradiative transfer
dc.subjectsubmillimeter: galaxies
dc.subjectGALACTIC CHEMICAL EVOLUTION
dc.subjectLUMINOUS INFRARED GALAXIES
dc.subjectMOLECULAR GAS
dc.subjectSTAR-FORMATION
dc.subjectNGC 6240
dc.subjectINTENSITY RATIOS
dc.subjectARP 220
dc.subjectMRK 231
dc.subjectMETALLICITY
dc.subject(CO)-C-13
dc.titleExtreme CO Isotopic Abundances in the ULIRG IRAS 13120-5453: An Extremely Young Starburst or Top-heavy Initial Mass Function
dc.typeartículo
dc.volumen840
sipa.codpersvinculados1031484
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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