J/ApJ/788/L21ivo://CDS.VizieR/J/ApJ/788/L21doi:10.26093/cds/vizier.17889021CDSAmanullah R.Goobar A.Johansson J.Banerjee D.P.K.Venkataraman V.,Joshi V.Ashok N.M.Cao Y.Kasliwal M.M.Kulkarni S.R.Nugent P.E.,Petrushevska T.Stanishev V.2017-09-04T08:03:31Z2017-07-10T13:24:25ZCDS support team

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

cds-question@unistra.frsupernovaehst-photometryinfrared-photometryvisible-astronomybroad-band-photometryextinctionThe wavelength dependence of the extinction of Type Ia SN 2014J in the nearby galaxy M82 has been measured using UV to near-IR photometry obtained with the Hubble Space Telescope, the Nordic Optical Telescope, and the Mount Abu Infrared Telescope. This is the first time that the reddening of an SN Ia is characterized over the full wavelength range of 0.2-2 {mu}m. A total-to-selective extinction, R_V_>= 3.1, is ruled out with high significance. The best fit at maximum using a Galactic type extinction law yields R_V_=1.4+/-0.1. The observed reddening of SN 2014J is also compatible with a power-law extinction, A_{lambda}_/A_V_=({lambda}/{lambda}_V_)^p^ as expected from multiple scattering of light, with p=-2.1+/-0.1. After correcting for differences in reddening, SN 2014J appears to be very similar to SN 2011fe over the 14 broadband filter light curves used in our study.2014ApJ...788L..21Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/788/L21CatalogResearchIsServedByTAP VizieR generic servicerelated-toI/254 : The HST Guide Star Catalog, Version 1.2 (Lasker+ 1996)J/ApJ/753/22 : Swift/UVOT observations of SN 2011fe (Brown+, 2012)J/ApJ/805/74 : SN2014J Swift/UVOT light curves (Brown+, 2015)J/A+A/585/A19 : SN 2014J BV light curves (Bonanos+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/788/L21https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/788/L21http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/788/L21https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/788/L21https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/788/L21http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/788/L21GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/ApJ/788/L21/table1The measured photometry of SN 2014J from HST/WFC3, NOT/ALFOSC and the Mount Abu infrared telescoperecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMJDModified Julian Date of observationdtime.epochfloatPhaseEffective, lightcurve width corrected, phase with respect to B band maximumtime.phasefloatFilterFilter used in the observationinstr.setup;obscharmagObserved magnitude in Filter (1)magphot.magfloate_magUncertainty in magmagstat.error;phot.magfloatAXGalactic extinction in Filter (2)magphys.absorptionfloatMatch[DM] V band match code (3)meta.codecharVmagV band magnitude (1)magphot.mag;em.opt.Vfloate_VmagUncertainty in Vmagmagstat.error;phot.mag;em.opt.VfloatAVGalactic extinction in the V bandmagphys.absorption.galfloatColorCorresponding synthesized color of SN 2011femagphot.colorfloat