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Episodic star formation in a group of LAEs at z=5.07

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dc.contributor.authorPérez González, Pablo Guillermo
dc.contributor.authorCardiel López, Nicolás
dc.contributor.authorGallego Maestro, Jesús
dc.date.accessioned2023-06-19T15:02:41Z
dc.date.available2023-06-19T15:02:41Z
dc.date.issued2014-10-11
dc.description© 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. Artículo firmado por 13 autores. JMRE, OGM and NCR (CDS2006-00070, AYA2012-39168-C03-01), CMT and JMMH (AYA2010-21887-C04-04, AYA2010-21887-C04-02 and AYA2012-39362-C02-01) and AHC (AYA2012-31447) acknowledge support from the Spanish MINECO under the PNAyA grants given in parenthesis. OGM acknowledges a Juan de La Cierva Fellowship (MINECO). We are very grateful to the GTC support staff for their help with the observations. SHARDS is funded by the Spanish MINECO with grant AYA2012-31277. The Rainbow data base is partially funded by the Spanish MINECO under grant AYA2012-31277 and the US NSF grant AST-08-08133. Based on observations made with the Gran Telescopio Canarias (GTC), installed at the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofísica de Canarias, in the island of La Palma.
dc.description.abstractWe are undertaking a search for high-redshift low-luminosity Lyman Alpha sources in the SHARDS (Survey for High-z Absorption Red and Dead Sources) survey. Among the pre-selected Lyman Alpha sources two candidates were spotted, located 3.19 arcsec apart, and tentatively at the same redshift. Here, we report on the spectroscopic confirmation with Gran Telescopio Canarias of the Lyman Alpha emission from this pair of galaxies at a confirmed spectroscopic redshifts of z=5.07. Furthermore, one of the sources is interacting/merging with another close companion that looks distorted. Based on the analysis of the spectroscopy and additional photometric data, we infer that most of the stellar mass of these objects was assembled in a burst of star formation 100 Myr ago. A more recent burst (2 Myr old) is necessary to account for the measured Lyman Alpha flux. We claim that these two galaxies are good examples of Lyman Alpha sources undergoing episodic star formation. Besides, these sources very likely constitute a group of interacting Lyman Alpha emitters (LAEs).
dc.description.departmentDepto. de Física de la Tierra y Astrofísica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipAyudas para contratos Juan de la Cierva (MINECO)
dc.description.sponsorshipMinisterio de Economía y Competitividad (MINECO)
dc.description.sponsorshipNational Science Fpundation (NSF)
dc.description.sponsorshipPrograma Nacional de Astronomía y Astrofísica (PNAyA), MINECO
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/38300
dc.identifier.doi10.1093/mnrasl/slu099
dc.identifier.issn0035-8711
dc.identifier.officialurlhttp://dx.doi.org/10.1093/mnrasl/slu099
dc.identifier.relatedurlhttp://mnrasl.oxfordjournals.org/
dc.identifier.urihttps://hdl.handle.net/20.500.14352/35200
dc.issue.number1
dc.journal.titleMonthly notices of the Royal Astronomical Society
dc.language.isoeng
dc.page.finalL72
dc.page.initialL68
dc.publisherWiley
dc.relation.projectIDCDS2006-00070
dc.relation.projectIDAYA2012-39168-C03-01
dc.relation.projectIDAYA2010-21887-C04-04
dc.relation.projectIDAYA2010-21887-C04-02
dc.relation.projectIDAYA2012-39362-C02-01
dc.relation.projectIDAYA2012-31447
dc.relation.projectIDAYA2012-31277
dc.relation.projectIDAST-08-08133
dc.rights.accessRightsopen access
dc.subject.cdu52
dc.subject.keywordLyman-break galaxies
dc.subject.keywordLY-alpha emitters
dc.subject.keywordUltra-deep-field
dc.subject.keywordHubble-space-telescope
dc.subject.keywordHigh-redshift galaxies
dc.subject.keywordSimilar-to 6
dc.subject.keywordForming galaxies
dc.subject.keywordStellar populations
dc.subject.keywordCosmic reionization
dc.subject.keywordKeck spectroscopy
dc.subject.ucmAstrofísica
dc.subject.ucmAstronomía (Física)
dc.titleEpisodic star formation in a group of LAEs at z=5.07
dc.typejournal article
dc.volume.number444
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