J/A+A/674/A99ivo://CDS.VizieR/J/A+A/674/A99doi:10.26093/cds/vizier/bc-n2/ljjCDSHamed M.Malek K.Buat V.JunaisCiesla L.Donevski D.Riccio G.,Figueira M.2026-02-10T20:02:23Z2025-05-26T11:58:22ZCDS support team

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

cds-question@unistra.frgalaxiesinfrared-sourcesradio-sourcesgalaxy-classification-systemsgalaxy-radiiWe investigate the dust attenuation of 122 heavily dust-obscured galaxies detected with the Atacama Large Millimeter Array (ALMA) and Herschel in the COSMOS field. We search for correlations between dust attenuation recipes and the variation of physical parameters, namely, the effective radii of galaxies, their star formation rates, and stellar masses. We aim to understand which of the commonly used laws best describes dust attenuation in dusty star-forming galaxies (DSFGs) at high redshift. We made use of the extensive photometric coverage of the COSMOS data combined with highly resolved dust continuum maps from ALMA. We used CIGALE to estimate various physical properties of these dusty objects, namely: their star formation rates (SFR), their stellar masses, and their attenuation at short wavelengths. We inferred the effective radii (Re) of galaxies using GALFIT in the Y band of HSC and ALMA continuum maps. We used these radii to investigate the relative compactness of the dust continuum and the extension of the rest-frame UV/optical Re(y)/Re(ALMA). We find that the physical parameters calculated from our models strongly depend on the assumption of the dust attenuation curve. As expected, the most impacted parameter is the stellar mass, which leads to a change in the "starburstiness" of the objects. We find that taking into account the relative compactness of star-to-dust emission prior to SED fitting is crucial, especially when studying dust attenuation of dusty star-forming galaxies. Shallower attenuation curves do not show a clear preference of compactness with attenuation, while the Calzetti attenuation curve is shown to prefer a comparable spatial extent of unattenuated stellar light and dust emission. The evolution of the Re(UV)/Re(ALMA) ratio with redshift peaks around the cosmic noon in our sample of DSFGs, showing that this compactness is correlated with the cosmic SFR density of these dusty sources.2023A&A...674A..99Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/674/A99CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/674/A99https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/674/A99http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/674/A99https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/674/A99https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/674/A99http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/674/A99GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/674/A99/radiiall (All radius table)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/674/A99/radiiall?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/674/A99/radiiall?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/674/A99/radiiall?GETtext/xml+votable180.050000true149.42400832.36177810.0055555555555555565/6814 6/272471.987820871092403e-24 1.528037907652962e-22https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/674/A99?format=asciiOpticalInfraredRadiodefaultJ/A+A/674/A99/radiiallAll radius tablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintzRedshift (redshift)src.redshiftfloatScaleALMAALMA scale (band 6, 1.3mm) (scale_ALMA)arcsec/pixinstr.scalefloatnALMAALMA (band 6, 1.3mm) Sersic index (n_ALMA)stat.fit.paramfloate_nALMAALMA (band 6, 1.3mm) Sersic index index (en_ALMA)stat.errorfloatreALMAALMA (band 6, 1.3mm) effective radius in arcsec (re_ALMA)arcsecphys.angSize;srcfloate_reALMAALMA (band 6, 1.3mm) effective radius in arcsec error (ere_ALMA)arcsecstat.errorfloatmagALMAALMA (band 6, 1.3mm) magnitude (mag_ALMA)magphot.magfloate_magALMAALMA (band 6, 1.3mm) magnitude error (emag_ALMA)magstat.errorfloatPAALMAALMA (band 6, 1.3mm) position angle (PA_ALMA)degpos.posAngdoublee_PAALMAALMA (band 6, 1.3mm) position angle error (ePA_ALMA)degstat.errorfloatqALMAALMA (band 6, 1.3mm) axis ratio (q_ALMA)phys.size.axisRatiofloate_qALMAALMA (band 6, 1.3mm) axis ratio error (eq_ALMA)stat.errorfloatrchi2ALMAALMA (band 6, 1.3mm) reduced chi^2^ (reduced_chi2_ALMA)stat.fit.chi2doublerecALMACircularized ALMA (band 6, 1.3mm) radius re_circ_ALMA_arcsec)arcsecphys.angSize;srcfloate_recALMACircularized ALMA (band 6, 1.3mm) radius error (ere_circ_ALMA_arcsec)arcsecstat.errorfloatreALMAkpcALMA (band 6, 1.3mm) effective radius in kpc (re_ALMA_kpc)kpcphys.angSize;srcdoublee_reALMAkpcALMA (band 6, 1.3mm) effective radius in kpc error (ere_ALMA_kpc)kpcstat.errordoubleScaleY? HSC Y band scale (scale_y)arcsec/pixinstr.scalefloatnullablenY? HSC Y band Sersic index (n_y)stat.fit.paramfloatnullablee_nY? HSC Y band Sersic index error (en_y)stat.errorfloatnullablereY? HSC Y band effective radius in arcsec (re_y)arcsecphys.angSize;srcfloatnullablee_reY? HSC Y band effective radius in arcsec error (ere_y)arcsecstat.errorfloatnullablemagY? HSC Y band magnitude (mag_y)magphot.mag;em.IR.Jfloatnullablee_magY? HSC Y band magnitude error (emag_y)magstat.errorfloatnullablePAY? HSC Y band position angle (PA_y)degpos.posAng;instr.detdoublenullablee_PAY? HSC Y band position angle error (ePA_y)degstat.errorfloatnullableqY? HSC Y band axis ratio (q_y)meta.notefloatnullablee_qY? HSC Y band axis ratio error (eq_y)stat.errorfloatnullablerchi2Y? HSC Y band reduced chi^2^ (reduced_chi2_y)stat.fit.chi2doublenullablerecY? Circularized HSC Y band radius (re_circ_Y_arcsec)arcsecphys.angSize;srcfloatnullablee_recY? Circularized HSC Y band radius error (ere_circ_Y_arcsec)arcsecstat.errorfloatnullablereYkpc? HSC Y band effective radius in kpc (re_Y_kpc)kpcphys.angSize;srcdoublenullablee_reYkpc? HSC Y band effective radius in kpc error (ere_Y_kpc)kpcstat.errordoublenullableScaleVLA? VLA (3GHz) scale (scale_VLA)arcsec/pixinstr.scalefloatnullablenVLA? VLA (3GHz) Sersic index (n_VLA)stat.fit.paramfloatnullablee_nVLA? VLA (3GHz) Sersic index error (en_VLA)stat.errorfloatnullablereVLA? VLA (3GHz) effective radius in arcsec (re_VLA)arcsecphys.angSize;srcfloatnullablee_reVLA? VLA (3GHz) effective radius in arcsec error (ere_VLA)arcsecstat.errorfloatnullablemagVLA? VLA (3GHz) magnitude (mag_VLA)magphot.magfloatnullablee_magVLA? VLA (3GHz) magnitude error (emag_VLA)magstat.errorfloatnullablePAVLA? VLA (3GHz) position angle (PA_VLA)degpos.posAngdoublenullablee_PAVLA? VLA (3GHz) position angle error (ePA_VLA)degstat.errordoublenullableqVLA? VLA (3GHz) axis ratio (q_VLA)phys.size.axisRatiofloatnullablee_qVLA? VLA (3GHz) axis ratio error (eq_VLA)stat.errorfloatnullablerchi2VLA? VLA (3GHz) reduced chi^2^ (reduced_chi2_VLA)stat.fit.chi2doublenullablerecVLA? Circularized VLA radius (re_circ_VLA_arcsec)arcsecphys.angSize;srcfloatnullablee_recVLA? Circularized VLA radius error (ere_circ_VLA_arcsec)arcsecstat.errorfloatnullablereVLAkpc? VLA effective radius in kpc (re_VLA_kpc)kpcphys.angSize;srcdoublenullablee_reVLAkpc? VLA effective radius in kpc error (ere_VLA_kpc)kpcstat.errordoublenullable_RAPositions from name (right ascension part)degpos.eq.ra;meta.main_DEPositions from name (declination part)degpos.eq.dec;meta.mainNameName (HELP_JHHMMSS.sss+DDMMSS.sss) (id)meta.id;meta.mainchar