Effect of Environment on the Underlying Stellar Populations of Dwarf Elliptical Galaxies in the Coma Cluster

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dc.contributor.authorMatkovic, A.
dc.contributor.authorGuzmán, R.
dc.contributor.authorSánchez Blázquez, Patricia
dc.contributor.authorCardiel López, Nicolás
dc.contributor.authorGorgas García, Francisco Javier
dc.date.accessioned2023-06-20T10:49:38Z
dc.date.available2023-06-20T10:49:38Z
dc.date.issued2009
dc.description© 2009 American Institute of Phiysics. International Conference on Probing Stellar Populations out to the Distant Universe (2008. Cefalu, Italy). I thank the SOC for financial support to attend the conference.
dc.description.abstractWe derive ages, metallicities and [alpha/Fe] ratios for dwarf early-type galaxies (dE/dS0) in the center and a region believed to be infalling into the Coma cluster. We find that a set of metallic indices cannot be described by linear relations with velocity dispersion (sigma), while another group of indices exhibits linear index-sigma relations. dE/dS0 galaxies in the core of the cluster are on average younger, and have lower metallicities and lower alpha-ratios (solar to sub-solar) than the more luminous elliptical galaxies. On the other hand, dEs/dSos in the infall region of Coma form a less homogeneous population. We find an unusually high fraction of dE/dS0s with high [alpha/Fe] ratios, suggesting short time scales for the star formation histories for these galaxies. Furthermore, the dE/dS0s with high alpha-ratios have a range of ages and metallicities implying multiple formation scenarios where some galaxies have experienced their short star formation bursts at more recent epochs.
dc.description.departmentDepto. de Física de la Tierra y Astrofísica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipSOC
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/28201
dc.identifier.citation1. Dekel, A., & Silk, J., 1986, ApJ, 303,39 2. Lin, D. N. C, & Faber, S. M., 1983, ApJ, 266, L21 3. Matkovic, A., Guzmán, R., Sánchez Blázquez, P., Gorgas, J., Cardiel, N., and Gruel, N., accepted to ApJ, arXiv:0810.3237 4. Matkovic, A. 2008, Ph.D. Dissertation, Internal Kinematics and Stellar Populations of Dwarf Early-Type Galaxies in the Coma Cluster 5. Moore, B., Katz, N., and Lake, G. 1996, ApJ, 457,455 6. Smith, R.J., Hudson, M.J., Nelan, J.E., Moore, S.A., Quinney, S.J., and 6 co-authors 2004, AJ, 128, 1558S 7. Thomas, D., Maraston, C, & Kom, A. 2004, MNRAS, 351, L19 8. Trippico, M. J., & Bell, R. A. 1995, AJ, 110,3035
dc.identifier.issn0094-243X
dc.identifier.officialurlhttp://link.aip.org/link/?APCPCS/1111/23/1
dc.identifier.relatedurlhttp://scitation.aip.org/
dc.identifier.urihttps://hdl.handle.net/20.500.14352/51296
dc.journal.titleAIP Conference Proceedings
dc.language.isoeng
dc.page.final26
dc.page.initial23
dc.publisherAmerican Institute of Physics
dc.rights.accessRightsopen access
dc.subject.cdu52
dc.subject.keywordIndexes
dc.subject.keywordMatter
dc.subject.ucmAstrofísica
dc.subject.ucmAstronomía (Física)
dc.subject.ucmFísica atmosférica
dc.subject.unesco2501 Ciencias de la Atmósfera
dc.titleEffect of Environment on the Underlying Stellar Populations of Dwarf Elliptical Galaxies in the Coma Cluster
dc.typejournal article
dc.volume.number1111
dspace.entity.typePublication
relation.isAuthorOfPublicationcb673234-7735-413b-82a9-6c17276b12db
relation.isAuthorOfPublication2b15a442-d308-49d5-beda-1a98bb9db11e
relation.isAuthorOfPublicationd04f839b-2a80-4859-a493-3f0a9df4277f
relation.isAuthorOfPublication.latestForDiscovery2b15a442-d308-49d5-beda-1a98bb9db11e
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