GRAVITATIONAL FRAGMENTATION IN GALAXY MERGERS: A STABILITY CRITERION
| Author | dc.contributor.author | Escala Astorquiza, Andrés | |
| Author | dc.contributor.author | Becerra, Fernando | es_CL |
| Author | dc.contributor.author | Del Valle, Fernando | es_CL |
| Author | dc.contributor.author | Castillo, Esteban | es_CL |
| Admission date | dc.date.accessioned | 2014-01-29T15:40:16Z | |
| Available date | dc.date.available | 2014-01-29T15:40:16Z | |
| Publication date | dc.date.issued | 2013-06-20 | |
| Cita de ítem | dc.identifier.citation | The Astrophysical Journal, 763:39 (7pp), 2013 January 20 | en_US |
| Identifier | dc.identifier.other | DOI: 10.1088/0004-637X/763/1/39 | |
| Identifier | dc.identifier.uri | https://repositorio.uchile.cl/handle/2250/126325 | |
| General note | dc.description | Artículo de publicación ISI. | en_US |
| Abstract | dc.description.abstract | We study the gravitational stability of gaseous streams in the complex environment of a galaxy merger, because mergers are known to be places of ongoing massive cluster formation and bursts of star formation. We find an analytic stability parameter for the case of gaseous streams orbiting around the merger remnant. We test our stability criterion using hydrodynamic simulations of galaxy mergers and obtain satisfactory results. We find that our criterion successfully predicts the streams that will be gravitationally unstable to fragmentation into clumps. | en_US |
| Patrocinador | dc.description.sponsorship | A.E. acknowledges partial support from the Center for Astrophysics and Associated Technologies CATA (PFB 06) and Anillo de Ciencia y Tecnolog´ıa ACT1101. F.B. and L.d.V. acknowledge support from Programa Nacional de Becas de Postgrado (Grant D-22100632 and Grant D-21090518). The simulations were performed using the HPC clusters Markarian (FONDECYT 11090216), Geryon (PFB 06), and Levque (ECM-02). | en_US |
| Lenguage | dc.language.iso | en | en_US |
| Publisher | dc.publisher | IOP PUBLISHING LTD | en_US |
| Type of license | dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Chile | * |
| Link to License | dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ | * |
| Keywords | dc.subject | galaxies: formation | en_US |
| Título | dc.title | GRAVITATIONAL FRAGMENTATION IN GALAXY MERGERS: A STABILITY CRITERION | en_US |
| Document type | dc.type | Artículo de revista |
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