J/AJ/163/14ivo://CDS.VizieR/J/AJ/163/14doi:10.26093/cds/vizier.51630014CDSBrown P.J.Walker T.2022-06-13T12:53:39Z2022-04-11T07:11:08ZCDS support team

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

cds-question@unistra.frgalaxiesinterstellar-mediumextinctioninfrared-astronomysupernovaeEstimating the amount of foreground extinction due to the Milky Way dust along the line of sight is often a first step in determining the luminosity of an object. The amount of Galactic dust inferred by infrared emission maps can be contaminated by infrared light from nearby galaxies. By comparing extinction values at and around the location of nearby galaxies, we compile a list of 95 galaxies that likely contaminate the maps with an excess or improperly subtracted galaxian infrared emission, and tabulate our recommended values for the MW contribution. In addition to M82, which inspired this work, six more sources have an excess visual extinction A V of at least 0.05mag greater than our annular values; including M83, NGC1313, NGC6822, NGC918, UGC11501, and UGC11797. M33 is shown to be oversubtracted. NGC88 and the outskirts of NGC4258 are located in gaps in the Infrared Astronomical Satellite imaging. The recommended dust map values for the LMC, SMC, and M31 may also not be correctly returned by some software packages. Accurate reddening estimates are important for measuring stellar and supernova luminosities in these nearby galaxies.2022AJ....163...14Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/163/14CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/109 : IRAS Observations of Large Optical Galaxies (Rice+, 1988)J/ApJ/652/1133 : BVI photometry of NGC 4258 Cepheids (Macri+, 2006)J/ApJ/697/1138 : Discovery of PNe in M82 (Johnson+, 2009)J/ApJ/830/10 : >20yrs of HST obs. Cepheids SNIa host gal. (Hoffmann+, 2016)J/ApJ/826/56 : HST/WFC3 obs. of Cepheids in SN Ia host gal. (Riess+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/163/14https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/163/14http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/163/14https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/163/14https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/163/14http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/163/14GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/163/14/table1 (*Improved estimates for the galactic extinction in the line of sight near external galaxies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/163/14/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/163/14/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/163/14/table1?GETtext/xml+votable180.050000true80.894166667-69.7561111110.0055555555555555566/611 2155 2227 2265 2709 3516 4807 5100 5323 5629 5655 5995 6048 6098 6178 6315 6968 7282 7606 7624 7997 8667 8763 9468 9797 10070 10363 10377 10511 10574 10761 10841 10856 10977 11027 11218 11521 11914 14018 16039 16441 16453 17612 17689 17912 18148 18398 18507 19710 19991 19996 20372 21833 21916 25083 25344 25508 26303 26563 26584 27030 27348 27937 28167 28234 28468 28631 29718 30135 32288 33096 33193 33317 34361 34531 35365 35691 35993 36131 36371 38485 40379 40424 42025 43881 43995 45421 46363 46399 46636 46985 46999 47031https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/163/14?format=asciiInfrareddefaultJ/AJ/163/14/table1*Improved estimates for the galactic extinction in the line of sight near external galaxiesSimbadNameSimbad column added by the CDSmeta.idcharnullablef_AVmagFlag on AVmag (1)meta.codecharNameGalaxy Namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000[0/23] Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainRad[5/323] Galaxy radiusarcminphys.angSizeintAVmag[0.02/1.95] Estimate, V-band Galactic Extinction in the Line of Sightmagphys.absorption.galfloate_AVmag[0.001/0.1] Uncertainty on AVmag (2)magstat.error;phot.magfloatSNeComma separated list of Supernovae/Transientsmeta.id.assoc