Formation and evolution of dwarf early-type galaxies in the Virgo cluster I. Internal kinematics
| Autor: | Javier Gorgas, A. J. Cenarro, Alessandro Boselli, Reynier Peletier, A. Gil de Paz, Elisa Toloba, J. C. Muñoz-Mateos |
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| Přispěvatelé: | Astronomy, Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Astrofísica
Cosmology and Nongalactic Astrophysics (astro-ph.CO) Dark matter FOS: Physical sciences Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics 01 natural sciences Luminosity cD STAR-FORMATION STELLAR POPULATIONS TULLY-FISHER RELATION ELLIPTIC GALAXIES SYSTEMS 0103 physical sciences Astrophysics::Solar and Stellar Astrophysics galaxies: formation PHOTOMETRY 14. Life underwater Dwarf elliptical galaxy galaxies: elliptical and lenticular 010303 astronomy & astrophysics Galaxy rotation curve Astrophysics::Galaxy Astrophysics galaxies: kinematics and dynamics Physics [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] 010308 nuclear & particles physics Star formation ORIGIN Astrophysics::Instrumentation and Methods for Astrophysics Astronomy and Astrophysics galaxies: dwarf Virgo Cluster Galaxy Ram pressure Astronomía Space and Planetary Science FUNDAMENTAL PLANE ROTATION CURVES galaxies: elliptical and lenticular cD galaxies: clusters: individual: Virgo DIGITAL SKY SURVEY Astrophysics::Earth and Planetary Astrophysics galaxies: evolution Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | E-Prints Complutense. Archivo Institucional de la UCM instname Astronomy & astrophysics, 526:A114. EDP Sciences Astronomy and Astrophysics-A&A Astronomy and Astrophysics-A&A, EDP Sciences, 2011, 526, ⟨10.1051/0004-6361/201015344⟩ E-Prints Complutense: Archivo Institucional de la UCM Universidad Complutense de Madrid Astronomy and Astrophysics-A&A, 2011, 526, ⟨10.1051/0004-6361/201015344⟩ |
| ISSN: | 1432-0746 0004-6361 |
| DOI: | 10.1051/0004-6361/201015344⟩ |
| Popis: | We present new medium resolution kinematic data for a sample of 21 dwarf early-type galaxies (dEs) mainly in the Virgo cluster, obtained with the WHT and INT telescopes at the Roque de los Muchachos Observatory (La Palma, Spain). These data are used to study the origin of the dwarf elliptical galaxy population inhabiting clusters. We confirm that dEs are not dark matter dominated galaxies, at least up to the half-light radius. We also find that the observed galaxies in the outer parts of the cluster are mostly rotationally supported systems with disky morphological shapes. Rotationally supported dEs have rotation curves similar to those of star forming galaxies of similar luminosity and follow the Tully-Fisher relation. This is expected if dE galaxies are the descendant of low luminosity star forming systems which recently entered the cluster environment and lost their gas due to a ram pressure stripping event, quenching their star formation activity and transforming into quiescent systems, but conserving their angular momentum. 24 pages, 15 figures and 7 tables. Replaced to match the journal version |
| Databáze: | OpenAIRE |
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