J/MNRAS/499/993ivo://CDS.VizieR/J/MNRAS/499/993doi:10.26093/cds/vizier.74990993CDSBell C.P.M.Cioni M.-R.L.Wright A.H.Rubele S.Nidever D.L.,Tatton B.L.van Loon J.T.Zaritsky D.Choi Y.Choudhury S.,Clementini G.de Grijs R.Ivanov V.D.Majewski S.R.Marconi M.,Martinez-Delgado D.Massana P.Munoz R.R.Niederhofer F.Noel N.E.D.,Oliveira J.M.Olsen K.Pennock C.M.Ripepi V.Subramanian S.,Vivas A.K.2025-05-06T20:14:05Z2023-11-07T08:48:00ZCDS support team

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

cds-question@unistra.frgalaxiesphotometrymagellanic-cloudsredshiftedinterstellar-reddeningvisible-astronomyinfrared-astronomyWe present a map of the total intrinsic reddening across ~34deg^2^ of the Small Magellanic Cloud (SMC) derived using optical (ugriz) and near-infrared (IR; YJK_s_) spectral energy distributions (SEDs) of background galaxies. The reddening map is created using a subsample of 29274 galaxies with low levels of intrinsic reddening based on the LEPHARE {chi}^2^ minimization SED-fitting routine. We find statistically significant enhanced levels of reddening associated with the main body of the SMC compared with regions in the outskirts [{Delta}E(B-V)~0.3mag]. A comparison with literature reddening maps of the SMC shows that, after correcting for differences in the volume of the SMC sampled, there is good agreement between our results and maps created using young stars. In contrast, we find significant discrepancies between our results and maps created using old stars or based on longer wavelength far-IR dust emission that could stem from biased samples in the former and uncertainties in the far-IR emissivity and the optical properties of the dust grains in the latter. This study represents one of the first large-scale categorizations of extragalactic sources behind the SMC and as such we provide the LEPHARE outputs for our full sample of ~500000 sources.2020MNRAS.499..993Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/499/993CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/499/993https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/499/993http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/499/993https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/499/993https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/499/993http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/499/993GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/499/993/table1 (A the lephare output for the 497577 sources in the full SMC sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/499/993/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/499/993/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/499/993/table1?GETtext/xml+votable180.050000true8.22274-75.596640.005555555555555556Cone search capability for table J/MNRAS/499/993/table3 (Comparison between the spectroscopically determined and calculated photometric redshifts for QSOs behind the SMC)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/499/993/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/499/993/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/499/993/table3?GETtext/xml+votable180.050000true9.824075-73.05855310.005555555555555556Cone search capability for table J/MNRAS/499/993/table4 (Median reddening values, standard deviations and the number of galaxies in each of the 343 bins covering the combined SMASH-VMC footprint of the SMC)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/499/993/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/499/993/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/499/993/table4?GETtext/xml+votable180.050000true357.5451-2.932960.0055555555555555564/2082 5/4349-4351 4520 4522 4692-4693 4695 4864 4866 8238-8239 8321 8323-8324 8326 8332 6/17391 17395 18086 18092 18094-18095 18757 18759 18765 18776-18777 18779 18801 18804-18805 19460 19462 19468 32943 33283 33289-33291 33300 33302-33303 33308-33310 33332 33336-33338 33411https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/499/993?format=asciiOpticalInfrareddefaultJ/MNRAS/499/993/table1A the lephare output for the 497577 sources in the full SMC sampleRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainindexedID[1/497577]meta.id;meta.mainintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDEJ2000Declination (J2000)degpos.eq.dec;meta.mainindexedzBESTBest-fitting photometric redshiftsrc.redshift.photfloate_zBEST? Lower error on zBEST (1{sigma} limit)stat.errordoublenullableE_zBEST? Upper error on zBEST (1{sigma} limit)stat.error;stat.maxdoublenullablezML? Maximum likelihood photometric redshiftsrc.redshift.photdoublenullablee_zML? Lower error on zML (1{sigma} limit)stat.errordoublenullableE_zML? Upper error on zML (1{sigma} limit)stat.error;stat.maxdoublenullableTempG/QBest-fitting galaxy/QSO template (1)meta.id;stat.fitintchi2G/QChi-squared for the best-fitting galaxy/QSO templatestat.fit.chi2doubleE(B-V)Best-fitting reddening E (B-V)magphot.color.excessfloatmuBest-fitting distance modulusmagphot.mag.distModfloatNbandsNumber of photometric bands in the SEDmeta.numberintContextCombination of photometric bands in the SED (2)meta.codeintTempSBest-fitting stellar templatemeta.id;stat.fitintchi2SChi-squared for the best-fitting stellar templatestat.fit.chi2doubleJ/MNRAS/499/993/table3Comparison between the spectroscopically determined and calculated photometric redshifts for QSOs behind the SMCNameQSO namemeta.id;meta.maincharzspecSpectroscopic redshiftsrc.redshiftfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintzphotCalculated photometric redshiftsrc.redshiftfloatf_zphot[a] Flag on zphot (1)meta.codechare_zphot[] Lower error on zphotstat.errorfloatE_zphot[] Upper error on zphotstat.error;stat.maxfloatr_zspecReference for zspec (2)meta.ref;pos.frameint_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/499/993/table4Median reddening values, standard deviations and the number of galaxies in each of the 343 bins covering the combined SMASH-VMC footprint of the SMCNgalNumber of galaxiesmeta.numberintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000[] Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainE(B-V)Reddeningmagphot.color.excessfloate_E(B-V)Error on E (B-V)magstat.errorfloat