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UV properties of early-type galaxies in the Virgo Cluster

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dc.contributor.authorBoselli, A.
dc.contributor.authorCortese, L.
dc.contributor.authorDeharveng, J. M.
dc.contributor.authorGavazzi, G.
dc.contributor.authorYi, K. S.
dc.contributor.authorGil De Paz, Armando
dc.contributor.authorSeibert, M.
dc.contributor.authorBoissier, S.
dc.contributor.authorDonas, J.
dc.contributor.authorLee, Y. W.
dc.contributor.authorMadore, B. F.
dc.contributor.authorMartin, D. C.
dc.contributor.authorRich, R. M.
dc.contributor.authorSohn, Y. J.
dc.date.accessioned2023-06-20T11:09:34Z
dc.date.available2023-06-20T11:09:34Z
dc.date.issued2005-08-10
dc.description© 2005. The American Astronomical Society. All rights reserved. We thank an unknown referee for his/her criticism. GALEX (Galaxy Evolution Explorer) is a NASA Small Explorer, launched in 2003 April. We gratefully acknowledge NASA’s support for construction, operation, and science analysis for the GALEX mission, developed in cooperation with the Centre National d’Etudes Spatiales of France and the Korean Ministry of Science and Technology. The authors would like to take this opportunity to thank the members of the GALEX SODA team for their valiant efforts in the timely reduction of the complex observational data set covering the full expanse of the Virgo Cluster.
dc.description.abstractWe study the UV properties of a volume-limited sample of early-type galaxies in the Virgo Cluster combining new GALEX far-ultraviolet (1530 Å) and near-ultraviolet (2310 Å) data with spectrophotometric data available at other wavelengths. The sample includes 264 elliptical, lenticular, and dwarf galaxies spanning a large range in luminosity (M_B ≤ -15). While the NUV to optical or near-IR color-magnitude relations (CMRs) are similar to those observed at optical wavelengths, with a monotonic reddening of the color index with increasing luminosity, the (FUV - V) and (FUV - H) CMRs show a discontinuity between massive and dwarf objects. An even more pronounced dichotomy is observed in the (FUV - NUV) CMR. For elliptical galaxies, the (FUV - NUV) color becomes bluer with increasing luminosity and with increasing reddening of the optical or near-IR color indices. For the dwarfs, the opposite trend is observed. These observational evidences are consistent with the idea that the UV emission is dominated by hot, evolved stars in giant systems, while in dwarf ellipticals residual star formation activity is more common.
dc.description.departmentDepto. de Física de la Tierra y Astrofísica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/35938
dc.identifier.doi10.1086/444534
dc.identifier.issn0004-637X
dc.identifier.officialurlhttp://dx.doi.org/10.1086/444534
dc.identifier.relatedurlhttp://iopscience.iop.org/
dc.identifier.urihttps://hdl.handle.net/20.500.14352/51776
dc.issue.number1
dc.journal.titleAstrophysical journal
dc.language.isoeng
dc.page.finalL32
dc.page.initialL29
dc.publisherAmerican Astronomical Society
dc.rights.accessRightsopen access
dc.subject.cdu52
dc.subject.keywordBand surface photometry
dc.subject.keywordDwarf elliptic galaxies
dc.subject.keywordTully-fisher relation
dc.subject.keywordStar-formation
dc.subject.keywordS0 galaxies
dc.subject.keywordStellar populations
dc.subject.keywordEvolution-explorer
dc.subject.keywordSample
dc.subject.keywordHistories
dc.subject.keywordCatalog
dc.subject.ucmAstrofísica
dc.subject.ucmAstronomía (Física)
dc.titleUV properties of early-type galaxies in the Virgo Cluster
dc.typejournal article
dc.volume.number629
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