Extensive Lensing Survey of Optical and Near-infrared Dark Objects (El Sonido): HST <i>H</i>-faint Galaxies behind 101 Lensing Clusters

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dc.contributor.authorSun, Fengwu
dc.contributor.authorEgami, Eiichi
dc.contributor.authorPerez-Gonzalez, Pablo G.
dc.contributor.authorSmail, Ian
dc.contributor.authorCaputi, Karina I.
dc.contributor.authorBauer, Franz E.
dc.contributor.authorRawle, Timothy D.
dc.contributor.authorFujimoto, Seiji
dc.contributor.authorKohno, Kotaro
dc.contributor.authorDudzeviciute, Ugne
dc.contributor.authorAtek, Hakim
dc.contributor.authorBianconi, Matteo
dc.contributor.authorChapman, Scott C.
dc.contributor.authorCombes, Francoise
dc.contributor.authorJauzac, Mathilde
dc.contributor.authorJolly, Jean-Baptiste
dc.contributor.authorKoekemoer, Anton M.
dc.contributor.authorMagdis, Georgios E.
dc.contributor.authorRodighiero, Giulia
dc.contributor.authorRujopakarn, Wiphu
dc.contributor.authorSchaerer, Daniel
dc.contributor.authorSteinhardt, Charles L.
dc.contributor.authorVan der Werf, Paul
dc.contributor.authorWalth, Gregory L.
dc.contributor.authorWeaver, John R.
dc.date.accessioned2025-01-20T22:04:59Z
dc.date.available2025-01-20T22:04:59Z
dc.date.issued2021
dc.description.abstractWe present a Spitzer/IRAC survey of H-faint (H-160 greater than or similar to 26.4, < 5 sigma) sources in 101 lensing cluster fields. Across a CANDELS/Wide-like survey area of similar to 648 arcmin(2) (effectively similar to 221 arcmin(2) in the source plane), we have securely discovered 53 sources in the IRAC Channel-2 band (CH2, 4.5 mu m; median CH2 = 22.46 +/- 0.11 AB mag) that lack robust HST/WFC3-IR F160W counterparts. The most remarkable source in our sample, namely ES-009 in the field of Abell 2813, is the brightest H-faint galaxy at 4.5 mu m known so far (CH2 = 20.48 +/- 0.03 AB mag). We show that the H-faint sources in our sample are massive (median M-star = 10 10.3 +/- 0.3 M-circle dot, star-forming (median star formation rate =1001 M-circle dot yr(-1)), and dust-obscured (A(v) = 2.6 +/- 0.3) galaxies around a median photometric redshift of z = 3.9 +/- 0.4. The stellar continua of 14 H-faint galaxies can be resolved in the CH2 band, suggesting a median circularized effective radius (R-e,R-circ; lensing corrected) of 1.9 +/- 0.2 kpc and <1.5 kpc for the resolved and whole samples, respectively. This is consistent with the sizes of massive unobscured galaxies at z similar to 4, indicating that H-faint galaxies represent the dusty tail of the distribution of a wider galaxy population. Comparing with the ALMA dust continuum sizes of similar galaxies reported previously, we conclude that the heavy dust obscuration in H-faint galaxies is related to the compactness of both stellar and dust continua (R-e,R-circ similar to 1 kpc). These H-faint galaxies make up 161 3 % of the galaxies in the stellar-mass range of 10(10) - 10(11.2) M-circle dot at z = 3 similar to 5, contributing to 8(-4)(+8)% of the cosmic star formation rate density in this epoch and likely tracing the early phase of massive galaxy formation.
dc.fuente.origenWOS
dc.identifier.doi10.3847/1538-4357/ac2578
dc.identifier.eissn1538-4357
dc.identifier.issn0004-637X
dc.identifier.urihttps://doi.org/10.3847/1538-4357/ac2578
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/94114
dc.identifier.wosidWOS:000722404300001
dc.issue.numero2
dc.language.isoen
dc.revistaAstrophysical journal
dc.rightsacceso restringido
dc.titleExtensive Lensing Survey of Optical and Near-infrared Dark Objects (El Sonido): HST <i>H</i>-faint Galaxies behind 101 Lensing Clusters
dc.typeartículo
dc.volumen922
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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