MUSE observations towards the lensing cluster A2744: Intersection between the LBG and LAE populations at <i>z</i> ∼ 3-7

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dc.contributor.authorde La Vieuville, G.
dc.contributor.authorPello, R.
dc.contributor.authorRichard, J.
dc.contributor.authorMahler, G.
dc.contributor.authorLeveque, L.
dc.contributor.authorBauer, F. E.
dc.contributor.authorLagattuta, D. J.
dc.contributor.authorBlaizot, J.
dc.contributor.authorContini, T.
dc.contributor.authorGuaita, L.
dc.contributor.authorKusakabe, H.
dc.contributor.authorLaporte, N.
dc.contributor.authorMartinez, J.
dc.contributor.authorMaseda, M., V
dc.contributor.authorSchaerer, D.
dc.contributor.authorSchmidt, K. B.
dc.contributor.authorVerhamme, A.
dc.date.accessioned2025-01-23T19:46:56Z
dc.date.available2025-01-23T19:46:56Z
dc.date.issued2020
dc.description.abstractWe present a study of the intersection between the populations of star forming galaxies selected as either Lyman break galaxies (LBGs) or Lyman-alpha emitters (LAEs) in the redshift range 2.9-6.7 and within the same volume of universe sampled by the Multi-Unit Spectroscopic Explorer (MUSE) behind the Hubble Frontier Fields lensing cluster A2744. We define three samples of star-forming galaxies: LBG galaxies with an LAE counterpart (92 galaxies), LBG galaxies without an LAE counterpart (408 galaxies), and LAE galaxies without an LBG counterpart (46 galaxies). All these galaxies are intrinsically faint because of the lensing nature of the sample (M-1500 >=-20.5). The fraction of LAEs among all selected star-forming galaxies increases with redshift up to z similar to 6 and decreases for higher redshifts, in agreement with previous findings. The evolution of LAE/LBG populations with UV magnitude and Ly alpha luminosity shows that the LAE selection is able to identify intrinsically UV faint galaxies with M-1500 >=-15 that are typically missed in the deepest lensing photometric surveys. The LBG population seems to fairly represent the total population of star-forming galaxies down to M-1500 similar to-15. Galaxies with M-1500<-17 tend to have SFRLy alpha<SFRuv, whereas the opposite trend is observed within our sample for faint galaxies with M-1500>-17, including galaxies only detected by their Ly alpha emission, with a large scatter. These trends, previously observed in other samples of star-forming galaxies at high-z, are seen here for very faint M-1500 similar to-15 galaxies; that is, much fainter than in previous studies. The present results show no clear evidence for an intrinsic difference between the properties of the two populations selected as LBG and/or LAE. The observed trends could be explained by a combination of several phenomena, like the existence of different star-formation regimes, the dust content, the relative distribution and morphology of dust and stars, or the stellar populations.
dc.fuente.origenWOS
dc.identifier.doi10.1051/0004-6361/202037651
dc.identifier.eissn1432-0746
dc.identifier.issn0004-6361
dc.identifier.urihttps://doi.org/10.1051/0004-6361/202037651
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/100333
dc.identifier.wosidWOS:000595811300002
dc.language.isoen
dc.revistaAstronomy & astrophysics
dc.rightsacceso restringido
dc.subjectgravitational lensing: strong
dc.subjectgalaxies: high-redshift
dc.subjectdark ages, reionization, first stars
dc.titleMUSE observations towards the lensing cluster A2744: Intersection between the LBG and LAE populations at <i>z</i> ∼ 3-7
dc.typeartículo
dc.volumen644
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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