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A method for simultaneous determination of A/sub v/ and R and applications

dc.contributor.authorDucati, Jorge Ricardopt_BR
dc.contributor.authorRibeiro, Daianapt_BR
dc.contributor.authorRembold, Sandro Barbozapt_BR
dc.date.accessioned2015-01-14T02:15:55Zpt_BR
dc.date.issued2003pt_BR
dc.identifier.issn0004-637Xpt_BR
dc.identifier.urihttp://hdl.handle.net/10183/108911pt_BR
dc.description.abstractA method for the simultaneous determination of the interstellar extinction (AV) and of the ratio of total to selective extinction (R), derived from the 1989 Cardelli, Clayton, & Mathis fitting of the interstellar extinction law, is presented and applied to a set of 1900 color excesses derived from observations of stars in UBVRIJHKL. The method is used to study the stability of AV and R within selected regions in Perseus, Scorpius, Monoceros, Orion, Sagittarius, Ophiuchus, Carina, and Serpens. Analysis shows that R is approximately constant and peculiar to each sector, with mean values that vary from 3.2 in Perseus to 5.6 in Ophiuchus. These results are similar to published values by Aiello et al., He et al., Vrba & Rydgren, O’Donnell, and Cardelli, Clayton, &Mathis.en
dc.format.mimetypeapplication/pdf
dc.language.isoengpt_BR
dc.relation.ispartofThe astrophysical journal. Chicago. Vol. 588, no. 1 pt. 1 (May 2003), p. 344-352pt_BR
dc.rightsOpen Accessen
dc.subjectDust, extinctionen
dc.subjectNebulosaspt_BR
dc.subjectFotometria estelarpt_BR
dc.subjectOpen clusters and associations: generalen
dc.subjectTechniques: photometricen
dc.subjectEstrelas supergigantespt_BR
dc.subjectEstrelas variaveispt_BR
dc.titleA method for simultaneous determination of A/sub v/ and R and applicationspt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000369798pt_BR
dc.type.originEstrangeiropt_BR


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