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Titolo: VLA HI Imaging of the brightest spiral galaxies in Coma - II. The HI Atlasand deep continuum imaging of selected early type galaxies
Autore: Bravo-Alfaro, H; Cayatte, V; van Gorkom, JH; Balkowski, C;
- Indirizzi:
- Univ Guanajuato, Dept Astron, Guanajuato 36000, Mexico Univ Guanajuato Guanajuato Mexico 36000 Astron, Guanajuato 36000, Mexico Observ Paris, DAEC, F-92195 Meudon, France Observ Paris Meudon France F-92195 v Paris, DAEC, F-92195 Meudon, France CNRS, UMR 8631, F-92195 Meudon, France CNRS Meudon France F-92195CNRS, UMR 8631, F-92195 Meudon, France Univ Paris 07, F-92195 Meudon, France Univ Paris 07 Meudon France F-92195 niv Paris 07, F-92195 Meudon, France Columbia Univ, Dept Astron, New York, NY 10027 USA Columbia Univ New YorkNY USA 10027 , Dept Astron, New York, NY 10027 USA
- Titolo Testata:
- ASTRONOMY & ASTROPHYSICS
fascicolo: 2,
volume: 379,
anno: 2001,
pagine: 347 - 361
- SICI:
- 1432-0746(200111)379:2<347:VHIOTB>2.0.ZU;2-0
- Fonte:
- ISI
- Lingua:
- ENG
- Soggetto:
- VIRGO CLUSTER GALAXIES; NEUTRAL HYDROGEN; NEARBY CLUSTERS; STAR-FORMATION; DISK GALAXIES; GAS; SUPERCLUSTER; EVOLUTION; RADIO; CLASSIFICATION;
- Keywords:
- galaxies : clusters : individual : Coma; radio lines : galaxies;
- Tipo documento:
- Article
- Natura:
- Periodico
- Settore Disciplinare:
- Physical, Chemical & Earth Sciences
- Citazioni:
- 50
- Recensione:
- Indirizzi per estratti:
- Indirizzo: Bravo-Alfaro, H Univ Guanajuato, Dept Astron, Apdo Postal 144, Guanajuato 36000, Mexico Univ Guanajuato Apdo Postal 144 Guanajuato Mexico 36000 o
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- Citazione:
- H. Bravo-Alfaro et al., "VLA HI Imaging of the brightest spiral galaxies in Coma - II. The HI Atlasand deep continuum imaging of selected early type galaxies", ASTRON ASTR, 379(2), 2001, pp. 347-361
Abstract
In the first paper of this series we used HI observations of the 19 brightest spirals in Coma to analyze the dynamical state of the cluster. In this paper we present the detailed Hi distribution and kinematics of the spiralsthat were detected in Hi, and radio continuum data for a sample of star forming and post starburst galaxies in Coma. We discuss the importance of ICM-ISM interactions to explain the observed Hi morphology. A rough comparisonof observed Hi sizes with predicted Hi sizes from simulations by Abadi et al. (1999) gives reasonable agreement. We use the results on radio continuum emission to estimate the star formation rate in the PSB galaxies we pointed at. The radio continuum emission in the 11 so called post starburst galaxies, identified by Caldwell et al. (1993) in the cluster, is weak. Eight of the 11 were not detected down to a 3 sigma upper limit of 0.6 mJy. This sets an upper limit to the star formation rate in these galaxies of less than 0.2 M-. yr(-1). The three detected post starburst galaxies have a star formation rate of less than one solar mass per year. Thus none of the post starburst galaxies in Coma are dust enshrouded starbursts.
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Documento generato il 26/05/13 alle ore 10:54:13