Compact Molecular Gas Distribution in Quasar Host Galaxies

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dc.contributor.authorMolina, Juan
dc.contributor.authorWang, Ran
dc.contributor.authorShangguan, Jinyi
dc.contributor.authorHo, Luis C.
dc.contributor.authorBauer, Franz E.
dc.contributor.authorTreister, Ezequiel
dc.contributor.authorShao, Yali
dc.date.accessioned2023-05-19T20:46:06Z
dc.date.available2023-05-19T20:46:06Z
dc.date.issued2021
dc.description.abstractWe use Atacama Large Millimeter/submillimeter Array CO (2-1) observations of six low-redshift Palomar-Green quasars to study the distribution and kinematics of the molecular gas of their host galaxies at kiloparsec-scale resolution. While the molecular gas content, molecular gas fraction, and star formation rates are similar to those of nearby massive, star-forming galaxies, the quasar host galaxies possess exceptionally compact, disky molecular gas distributions with a median half-light radius of 1.8 kpc and molecular gas mass surface densities greater than or similar to 22 M pc(-2). While the overall velocity field of the molecular gas is dominated by regular rotation out to large radii, with ratio of rotation velocity to velocity dispersion greater than or similar to 9, the nuclear region displays substantial kinematic complexity associated with small-scale substructure in the gas distribution. A tilted-ring analysis reveals that the kinematic and photometric position angles are misaligned on average by similar to 34 degrees 26 degrees and provides evidence of kinematic twisting. These observations provide tantalizing clues to the detailed physical conditions of the circumnuclear environments of actively accreting supermassive black holes.
dc.fechaingreso.objetodigital2025-01-03
dc.fuente.origenORCID-mayo23
dc.identifier.doi10.3847/1538-4357/abd7f6
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/69700
dc.identifier.wosidWOS:000621879400001
dc.issue.numeroNo. 2
dc.language.isoen
dc.nota.accesoContenido completo
dc.pagina.final17
dc.pagina.inicio1
dc.revistaAstrophysical Journal
dc.rightsacceso abierto
dc.titleCompact Molecular Gas Distribution in Quasar Host Galaxieses_ES
dc.typeartículo
dc.volumenVol. 908
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