J/A+A/712/A95ivo://CDS.VizieR/J/A+A/712/A95CDSHazarika D.Ferreira Lopes C.E.Catelan M.Almeida-Fernandes F.,Rodriguez-Segovia N.Placco V.M.Limberg G.Gutierrez-Soto L.A.,Cordeiro V.Borges Fernandes M.Humire P.K.Schoenell W.Kanaan A.,Ribeiro T.Mendes de Oliveira C.2026-08-12T08:01:40Z2026-08-12T09:01:06ZCDS support team

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

cds-question@unistra.frmagellanic-cloudsvariable-starsphotometryvisible-astronomysurveysClassical Cepheids (CCs) are key standard candles for establishing the extragalactic distance scale through their Period-Luminosity (P-L) relations. While these relations are well calibrated in broadband photometric systems, their behavior in narrow-band filters remains largely unexplored due to the lack of suitable observations. Combining broad- and narrow-band photometry can probe wavelength-dependent Offset and provide improved constraints on the dust distribution. Our goal is to derive multiband P-L relations for CCs in the Magellanic Clouds (MCs) and construct Cepheid-based reddening maps using the Southern Photometric Local Universe Survey (S-PLUS) bands, that includes five broad bands (ugriz) and seven narrow bands centered on spectral features: the Balmer jump/[OII], Ca H+K, H{delta}, CH g-band, Mg b triplet, H{alpha}, and the Ca triplet. We adjusted the single-epoch magnitudes of a total of more than 8000 CCs in the MCs by employing a mathematical framework to disentangle the effects of relative reddening and relative distance with respect to their host galaxies across all 12 bands. The P-L coefficients were obtained via iterative least-squares fitting and maximum likelihood optimization, with uncertainties estimated through a Bayesian Markov chain Monte Carlo analysis using separate fits for fundamental and overtone pulsators. We present the first Cepheid P-L relations in the S-PLUS photometric system, providing independent and consistent estimates of distance and reddening. The dispersion decreases systematically toward longer wavelengths, while the P-L slopes vary from about -2.0 to -2.8 in the bluest bands to about -2.9 to -3.2 in the reddest bands. The resulting reddening maps reveal spatially non-uniform Offset across both galaxies and recover known structures, such as, 30 Doradus and the HI supergiant shell SGS 12 (LMC 3). The inferred geometries and orientations of the MCs are consistent with previous studies. Our results support that reliable distances and reddening can be recovered even from single-epoch photometry when combined with multi-band data and corrected using light-curve information from other bands, enabling future high-precision 3D mapping of the MC.2026A&A...712A..95Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/712/A95CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/380 : S-PLUS DR4 photometrical catalog (Herpich+, 2024)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/712/A95https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/712/A95http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/712/A95https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/712/A95https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/712/A95http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/712/A95GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/712/A95/tablec1 (Redenning offset, distance modulus offset and corrected S-PLUS magnitudes)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/712/A95/tablec1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/712/A95/tablec1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/712/A95/tablec1?GETtext/xml+votable180.050000true67.94600677-69.819313050.0055555555555555564/2065 2068-2069 2081 5/8239 8259 8265 8268-8270 8280-8281 8284 8323 8328-8329 8331-8332 8448 8450 9728 6/32885 32889 32950 32953-32955 32965 32971 32989 33001 33031 33033-33035 33056-33057 33084-33085 33087 33128-33129 33131-33133 33140-33141 33285-33287 33289-33291 33321 33332-33334 33338 33352 33412-33413 33417 33797 33804 37408 37410 37416 37419 37504-37506 37508 37513-37515 37536-37538 37544-37546https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/712/A95?format=asciiOpticaldefaultJ/A+A/712/A95/tablec1Redenning offset, distance modulus offset and corrected S-PLUS magnitudesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSPLUSS-PLUS source identifier (MCNNNN_NNNNNNNNN)meta.id;meta.maincharSampleCepheid class and host galaxysrc.classcharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainDMoff? Distance modulus offsetmagphot.mag.distModdoublenullableE(B-V)off? Reddening E(B-V) offsetmagphot.color.excessdoublenullablee_DMoff? Uncertainty in DMoffmagstat.errordoublenullablee_E(B-V)off? Uncertainty in EBVoffmagstat.errordoublenullableumagcor? Corrected u magnitude (1)magphot.mag;em.opt.Udoublenullablee_J0430cor? Uncertainty in J0430cormagstat.errordoublenullablee_gmagcor? Uncertainty in gmagcormagstat.errordoublenullablee_J0515cor? Uncertainty in J0515cormagstat.errordoublenullablee_rmagcor? Uncertainty in rmagcormagstat.errordoublenullableJ0378cor? Corrected J0378 magnitude (1)magphot.mag;em.optdoublenullableJ0395cor? Corrected J0395 magnitude (1)magphot.mag;em.optdoublenullableJ0410cor? Corrected J0410 magnitude (1)magphot.mag;em.optdoublenullableJ0430cor? Corrected J0430 magnitude (1)magphot.mag;em.optdoublenullablegmagcor? Corrected g magnitude (1)magphot.mag;em.opt.BdoublenullableJ0515cor? Corrected J0515 magnitude (1)magphot.mag;em.optdoublenullablermagcor? Corrected r magnitude (1)magphot.mag;em.opt.RdoublenullableJ0660cor? Corrected J0660 magnitude (1)magphot.mag;em.optdoublenullableimagcor? Corrected i magnitude (1)magphot.mag;em.opt.IdoublenullableJ0861cor? Corrected J0861 magnitude (1)magphot.mag;em.optdoublenullablezmagcor? Corrected z magnitude (1)magphot.mag;em.opt.Idoublenullablee_umagcor? Uncertainty in umagcormagstat.error;pos.cartesian.xdoublenullablee_J0378cor? Uncertainty in J0378cormagstat.errordoublenullablee_J0395cor? Uncertainty in J0395cormagstat.errordoublenullablee_J0410cor? Uncertainty in J0410cormagstat.errordoublenullablee_J0660cor? Uncertainty in J0660cormagstat.errordoublenullablee_imagcor? Uncertainty in imagcormagstat.errordoublenullablee_J0861cor? Uncertainty in J0861cormagstat.errordoublenullablee_zmagcor? Uncertainty in zmagcormagstat.errordoublenullableNNumber of available photometric bandsmeta.numberint