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Early-type galaxies in the Coma Cluster: A new piece in the calcium puzzle

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dc.contributor.authorCenarro, A. J.
dc.contributor.authorSánchez Blázquez, Patricia
dc.contributor.authorCardiel López, Nicolás
dc.contributor.authorGorgas García, Francisco Javier
dc.date.accessioned2023-06-20T10:51:00Z
dc.date.available2023-06-20T10:51:00Z
dc.date.issued2004-10-20
dc.description© 2004. The American Astronomical Society. All rights reserved. The authors are indebted to the referee, S. M. Faber, for useful comments and suggestions. A. J. C. acknowledges financial support from a Universidad Complutense de Madrid Fundación del Amo Fellowship. The William Herschel Telescope is operated on the island of La Palma by the Royal Greenwich Observatory at the Observatorio del Roque de los Muchachos of the Instituto de Astrofísica de Canarias. This work was supported by the Spanish research project AYA2003-01840.
dc.description.abstractWe present measurements of the Ca II triplet and the Ca4227 Lick index for a sample of early-type galaxies in the Coma Cluster, deriving, for the first time, their corresponding relationships with velocity dispersion. Compared with a similar subsample of elliptical galaxies in the field, Coma galaxies with velocity dispersions in the range approximate to180-270 km s(-1) exhibit significant differences in the strengths of the Ca features, suggesting an influence of the environment on the star formation histories of these galaxies. We argue that the main scenarios previously proposed to explain the relatively low Ca II triplet of galaxies are not able by themselves to simultaneously reconcile the strengths of the two Ca indices in both environments.
dc.description.departmentDepto. de Física de la Tierra y Astrofísica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipUniversidad Complutense de Madrid
dc.description.sponsorshipFundación del Amo
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/29351
dc.identifier.doi10.1086/425862
dc.identifier.issn0004-637X
dc.identifier.officialurlhttp://dx.doi.org/10.1086/425862
dc.identifier.relatedurlhttp://iopscience.iop.org/
dc.identifier.urihttps://hdl.handle.net/20.500.14352/51334
dc.issue.number2
dc.journal.titleAstrophysical journal
dc.language.isoeng
dc.page.finalL104
dc.page.initialL101
dc.publisherIOP Publishing
dc.relation.projectIDAYA2003-01840
dc.rights.accessRightsopen access
dc.subject.cdu52
dc.subject.keywordInfrared caII triplet
dc.subject.keywordStellar population synthesis
dc.subject.keywordColor-magnitude relation
dc.subject.keywordElliptic galaxies
dc.subject.keywordEmpirical calibration
dc.subject.keywordGlobular-clusters
dc.subject.keywordII triplet
dc.subject.keywordAbsorption
dc.subject.keywordAbundances
dc.subject.keywordSpheroids
dc.subject.ucmAstrofísica
dc.subject.ucmAstronomía (Física)
dc.subject.ucmFísica atmosférica
dc.subject.unesco2501 Ciencias de la Atmósfera
dc.titleEarly-type galaxies in the Coma Cluster: A new piece in the calcium puzzle
dc.typejournal article
dc.volume.number614
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