Mostrar el registro sencillo del ítem

dc.contributor.authorDahlem, M.
dc.contributor.authorLisenfeld, Ute
dc.contributor.authorRossa, J.
dc.date.accessioned2013-10-10T12:20:48Z
dc.date.available2013-10-10T12:20:48Z
dc.date.issued2006
dc.identifier.citationDahlem, M.; Lisenfeld, U.; Rossa, J. Dependence of radio halo properties on star formation activity and galaxy mass. Astronomy and Astrophysics, 457(1): 121-131 (2006). [http://hdl.handle.net/10481/28413]es_ES
dc.identifier.issn0004-6361
dc.identifier.issn1432-0746
dc.identifier.otherarXiv:astro-ph/0607102v1
dc.identifier.urihttp://hdl.handle.net/10481/28413
dc.description.abstractWe investigate the relation between the existence and size of radio halos, which are believed to be created by star formation (SF) related energy input into the interstellar medium, and other galaxy properties, most importantly star formation activity and galaxy mass. Based on radio continuum and H$\alpha$ observations of a sample of seven late-type spiral galaxies we find a direct, linear correlation of the radial extent of gaseous halos on the size of the actively star-forming parts of the galaxy disks. Data of a larger sample of 22 galaxies indicate that the threshold energy input rate into the disk ISM per unit surface area for the creation of a gaseous halo depends on the mass surface density of the galaxy, in the sense that a higher threshold must be surpassed for galaxies with a higher surface density. Because of the good prediction of the existence of a radio halo from these two parameters, we conclude that they are important, albeit not the only contributors. The compactness of the SF-related energy input is also found to be a relevant factor. Galaxies with relatively compact SF distributions are more likely to have gaseous halos than others with more widespread SF activity. These results quantify the so-called "break-out" condition for matter to escape from galaxy disks, as used in all current models of the interstellar medium and first defined by Norman & Ikeuchi (1989).es_ES
dc.description.sponsorshipU.L. acknowledges support by the Spanish Ministry of Education, via the research projects AYA 2005-0716-C02-01, ESP 2004-06870-C02-02, and the Junta de Andalucía.es_ES
dc.language.isoenges_ES
dc.publisherEuropean Southern Observatory (ESO); Springer Verlages_ES
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivs 3.0 Licensees_ES
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es_ES
dc.subjectISMes_ES
dc.subjectGalaxies es_ES
dc.subjectSpirales_ES
dc.subjectEvolution es_ES
dc.subjectHaloses_ES
dc.subjectStarburstes_ES
dc.subjectRadio continuumes_ES
dc.titleDependence of radio halo properties on star formation activity and galaxy masses_ES
dc.typeinfo:eu-repo/semantics/preprintes_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses_ES
dc.identifier.doi10.1051/0004-6361:20054787es_ES


Ficheros en el ítem

[PDF]

Este ítem aparece en la(s) siguiente(s) colección(ones)

Mostrar el registro sencillo del ítem

Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License
Excepto si se señala otra cosa, la licencia del ítem se describe como Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License