Mass and dust in the disk of a spiral lens galaxy

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dc.contributor.authorWinn, JN
dc.contributor.authorHall, PB
dc.contributor.authorSchechter, PL
dc.date.accessioned2025-01-21T01:08:42Z
dc.date.available2025-01-21T01:08:42Z
dc.date.issued2003
dc.description.abstractGravitational lensing is a potentially important probe of spiral galaxy structure, but only a few cases of lensing by spiral galaxies are known. We present Hubble Space Telescope and Magellan observations of the two-image quasar PMN J2004-1349, revealing that the lens galaxy is a spiral galaxy. One of the quasar images passes through a spiral arm of the galaxy and suffers 3 mag of V-band extinction. Using simple lens models, we show that the mass quadrupole is well aligned with the observed galaxy disk. A more detailed model with components representing the bulge and disk gives a bulge-to-disk mass ratio of 0.16+/-0.05. The addition of a spherical dark halo, tailored to produce an overall. at rotation curve, does not change this conclusion.
dc.fuente.origenWOS
dc.identifier.issn0004-637X
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/96499
dc.identifier.wosidWOS:000186432700004
dc.issue.numero2
dc.language.isoen
dc.pagina.final679
dc.pagina.inicio672
dc.revistaAstrophysical journal
dc.rightsacceso restringido
dc.subjectdark matter
dc.subjectdust, extinction
dc.subjectgalaxies : spiral, structure, halos gravitational lensing
dc.subjectquasars : individual (PMN J2004-1349)
dc.titleMass and dust in the disk of a spiral lens galaxy
dc.typeartículo
dc.volumen597
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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