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Star Formation in Isolated LIRGs: Clues to Star-forming Processes at Higher z

Published online by Cambridge University Press:  05 December 2011

Isaura Fuentes-Carrera
Affiliation:
Escuela Superior de Física y Matemáticas, Instituto Politécnico Nacional U.P. Adolfo López Mateos, Col. Zacatenco México, D.F., C.P. 07730Mexico email: saura@esfm.inp.mx, isaura.fuentescarrera@gmail.com
Lorenzo Olguín
Affiliation:
Departamento de Investigación en Física, Universidad de Sonora Sonora, Mexico email: lorenzo@astro.uson.mx
Patricia Ambrocio-Cruz
Affiliation:
Ciencias de la Tierra y Materiales, Universidad Autónoma del Estado de Hidalgo Hidalgo, Mexico email: silviap@uaeh.edu.mx
Simon Verley
Affiliation:
Deptartamento de Física Teórica y del Cosmos, Universidad de Granada Granada, Spain email: simon@ugr.es
Margarita Rosado
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México México, D.F., Mexico email: margarit@astroscu.unam.mx, prepetto@astro.unam.mx
Lourdes Verdes-Montenegro
Affiliation:
Instituto de Astrofísica de Granada (IAA/CSIC) Granada, Spain email: lourdes@iaa.es
Paolo Repetto
Affiliation:
Instituto de Astronomía, Universidad Nacional Autónoma de México México, D.F., Mexico email: margarit@astroscu.unam.mx, prepetto@astro.unam.mx
Celia Vázquez
Affiliation:
Escuela Superior de Física y Matemáticas, Instituto Politécnico Nacional U.P. Adolfo López Mateos, Col. Zacatenco México, D.F., C.P. 07730Mexico email: saura@esfm.inp.mx, isaura.fuentescarrera@gmail.com
Verónica Aguilera
Affiliation:
Escuela Superior de Física y Matemáticas, Instituto Politécnico Nacional U.P. Adolfo López Mateos, Col. Zacatenco México, D.F., C.P. 07730Mexico email: saura@esfm.inp.mx, isaura.fuentescarrera@gmail.com
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Abstract

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Luminous infrared galaxies (LIRGs) are galaxies with LIR > 1011 L. For a star-forming galaxy to emit at a LIRG level, it must have a very high star formation rate (SFR). In the local Universe, the star formation (SF) is primarily triggered by interactions. However, at intermediate redshift, a large fraction of LIRGs are disk galaxies with little sign of recent merger activity. The question arises whether the intermediate redshift LIRGs are “triggered” or experiencing “normal”, if elevated, SF. Understanding these SF processes is important since this type of systems may have contributed to 20% or more of the cosmic SFR in the early Universe. In order to address this issue we study similar systems in the Local Universe, that is isolated late-type galaxies displaying LIRG activity. We use different observational techniques in order to trace the star-forming history of these systems. Here we present preliminary results.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2011

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