The Atacama Cosmology Telescope: CO(<i>J</i>=3-2) Mapping and Lens Modeling of an ACT-selected Dusty Star-forming Galaxy

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dc.contributor.authorRivera, Jesus
dc.contributor.authorBaker, Andrew J.
dc.contributor.authorGallardo, Patricio A.
dc.contributor.authorGralla, Megan B.
dc.contributor.authorHarris, Andrew, I
dc.contributor.authorHuffenberger, Kevin M.
dc.contributor.authorHughes, John P.
dc.contributor.authorKeeton, Charles R.
dc.contributor.authorLopez-Caraballo, Carlos H.
dc.contributor.authorMarriage, Tobias A.
dc.contributor.authorPartridge, Bruce
dc.contributor.authorSievers, Jonathan L.
dc.contributor.authorTagore, Amitpal S.
dc.contributor.authorWalter, Fabian
dc.contributor.authorWeiss, Axel
dc.contributor.authorWollack, Edward J.
dc.date.accessioned2025-01-23T21:11:52Z
dc.date.available2025-01-23T21:11:52Z
dc.date.issued2019
dc.description.abstractWe report Northern Extended Millimeter Array CO(J = 3 - 2) observations of the dusty star-forming galaxy ACT-S J020941+001557 at z = 2.5528, which was detected as an unresolved source in the Atacama Cosmology Telescope (ACT) equatorial survey. Our spatially resolved spectral line data support the derivation of a gravitational lens model from 37 independent velocity channel maps using a pixel-based algorithm, from which we infer a velocity-dependent magnification factor mu approximate to 7-22 with a luminosity-weighted mean <mu > approximate to 13. The resulting source-plane reconstruction is consistent with a rotating disk, although other scenarios cannot be ruled out by our data. After correction for lensing, we derive a line luminosity LCO(3-2)' = (5.53 +/- 0.69) x 10(10) K km s(-1) pc(2), a cold gas mass M-gas = (3.86 +/- 0.33) x 10(10) M-circle dot, a dynamical mass M-dyn sin(2) i = 3.9(-1.5)(+1.8) x 10(10) M-circle dot, and a gas mass fraction f(gas) csc(2) i = 1.0(-0.4)(+0.8). The line brightness temperature ratio of r(3,1) approximate to 1.6 relative to a Green Bank Telescope CO(J = 1 - 0) detection may be elevated by a combination of external heating of molecular clouds, differential lensing, and/or pointing errors.
dc.fuente.origenWOS
dc.identifier.doi10.3847/1538-4357/ab264b
dc.identifier.eissn1538-4357
dc.identifier.issn0004-637X
dc.identifier.urihttps://doi.org/10.3847/1538-4357/ab264b
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/100926
dc.identifier.wosidWOS:000475378300001
dc.issue.numero2
dc.language.isoen
dc.revistaAstrophysical journal
dc.rightsacceso restringido
dc.subjectgalaxies: high-redshift
dc.subjectgalaxies: ISM
dc.subjectgalaxies: starburst
dc.subjectgravitational lensing: strong
dc.titleThe Atacama Cosmology Telescope: CO(<i>J</i>=3-2) Mapping and Lens Modeling of an ACT-selected Dusty Star-forming Galaxy
dc.typeartículo
dc.volumen879
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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