J/A+A/643/A4ivo://CDS.VizieR/J/A+A/643/A4doi:10.26093/cds/vizier.36430004CDSFudamoto Y.Oesch P.A.Faisst A.Bethermin M.Ginolfi M.Khusanova Y.,Loiacono F.Le Fevre O.Capak P.Schaerer D.Silverman J.D.,Cassata P.Yan L.Amorin R.Bardelli S.Boquien M.Cimatti A.,Dessauges-zavadsky M.Fujimoto S.Gruppioni C.Hathi N.P.Ibar E.,Jones G.C.Koekemoer A.M.Lagache G.Lemaux B.C.Maiolino R.,Narayanan D.Pozzi F.Riechers D.A.Rodighiero G.Talia M.Toft S.,Vallini L.Vergani D.Zamorani G.Zucca E.2022-04-07T08:17:17Z2021-02-10T14:03:17ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frsurveysinterstellar-mediumgalaxiescatalogsredshiftedmillimeter-astronomysubmillimeter-astronomyultraviolet-astronomyWe present dust attenuation properties of spectroscopically confirmed star forming galaxies on the main sequence at a redshift of ~4.4-5.8. Our analyses are based on the far infrared continuum observations of 118 galaxies at rest-frame 158 {mu}m obtained with the Atacama Large Millimeter Array (ALMA) Large Program to INvestigate [CII] at Early times (ALPINE). We study the connection between the ultraviolet (UV) spectral slope ({beta}), stellar mass (M*), and infrared excess (IRX=L_IR_/L_UV_). Twenty-three galaxies are individually detected in the continuum at > 3.5{sigma} significance. We perform a stacking analysis using both detections and nondetections to study the average dust attenuation properties at z~4.4-5.8. The individual detections and stacks show that the IRX-{beta} relation at z~5 is consistent with a steeper dust attenuation curve than typically found at lower redshifts (z<4). The attenuation curve is similar to or even steeper than that of the extinction curve of the Small Magellanic Cloud. This systematic change of the IRX-{beta} relation as a function of redshift suggests an evolution of dust attenuation properties at z>4. Similarly, we find that our galaxies have lower IRX values, up to 1dex on average, at a fixed mass compared to previously studied IRX-M* relations at z<=4, albeit with significant scatter. This implies a lower obscured fraction of star formation than at lower redshifts. Our results suggest that dust properties of UV-selected star forming galaxies at z>=4 are characterised by (i) a steeper attenuation curve than at z<=4, and (ii) a rapidly decreasing dust obscured fraction of star formation as a function of redshift. Nevertheless, even among this UV-selected sample, massive galaxies (logM*/M_{sun}_>10) at z~5-6 already exhibit an obscured fraction of star formation of ~45%, indicating a rapid build-up of dust during the epoch of reionization.2020A&A...643A...4Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/643/A4CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/643/A2 : ALPINE DR1 merged catalog (Bethermin+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/643/A4https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/643/A4http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/643/A4https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/643/A4https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/643/A4http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/643/A4GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/643/A4/tablea1 (Summary of the total IR luminosity ({lambda}=8-1000um) estimations of our sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/643/A4/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/643/A4/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/643/A4/tablea1?GETtext/xml+votable180.050000true53.2251-27.833560.0055555555555555566/27256 27258-27259 35935https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/643/A4?format=asciiUVMillimeterdefaultJ/A+A/643/A4/tablea1Summary of the total IR luminosity ({lambda}=8-1000um) estimations of our sampleSimbadNameSimbad column added by the CDSmeta.idcharnullableNameNamemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintzRedshiftsrc.redshiftfloatbeta? ultraviolet spectral slopespect.indexfloatnullablel_LIRMeasLimit flag on LIRMeas (3{sigma})meta.code.errorcharLIRMeasIR luminosity calculated using the FIR SED template from Bethermin et al. (2020, Cat. J/A+A/643/A2)log(solLum)phys.luminosity;em.IRfloatLIR-2.23? Estimated total infrared luminosity using our best fit IRX-{beta} relations assuming {beta}0=-2.23 (1)log(solLum)phys.luminosity;em.IRfloatnullableLIR-2.6? Estimated total infrared luminosity using our best fit IRX-{beta} relations assuming {beta}0=-2.62 (our fiducial value) (1)log(solLum)phys.luminosity;em.IRfloatnullable_RARight Ascension (J2000) from J/A+A/643/A2/catalogdegpos.eq.ra;meta.main_DEDeclination (J2000) from J/A+A/643/A2/catalogdegpos.eq.dec;meta.main