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Balmer line photometry of the 30 doradus nebula

dc.contributor.authorStrauss, Federico Maximopt_BR
dc.contributor.authorBraz, M.A.pt_BR
dc.contributor.authorDucati, Jorge Ricardopt_BR
dc.date.accessioned2014-07-23T02:04:38Zpt_BR
dc.date.issued1979pt_BR
dc.identifier.issn0004-6361pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/98386pt_BR
dc.description.abstractThe 30 Doradus nebula was scanned at 29 strips of constant declination with a square diaphragm of 30" x 30" using Hα and Hβ interference filters. The absolute flux calibration was obtained from observations of six planetary nebulae. Maps, integrated fluxes, and peak brightness values are given. The ratio between the Hα and Hβ intensities is compared with the theoretical value obtained from recombination theory, to calculate the amount of interstellar reddening. The visual absorption fluctuates rapidly from point to point, but there is a systematic increase from about 0ṃ7 to more than 2m in the NW to SE direction. Comparing optical with radio data, the mean visual absorption is 1ṃ2.en
dc.format.mimetypeapplication/pdf
dc.language.isoengpt_BR
dc.relation.ispartofAstronomy and Astrophysics. Berlin. Vol. 74, no. 3 (May 1979), p. 280-283pt_BR
dc.rightsOpen Accessen
dc.subjectPhotoelectric photometryen
dc.subjectAstrofisica do meio interestelarpt_BR
dc.subjectFotometriapt_BR
dc.subject30 Dor nebulaen
dc.subjectBalmer linesen
dc.subjectFotometria fotoeletricapt_BR
dc.subjectMateria interestelarpt_BR
dc.subjectInterstellar absorptionen
dc.subjectRegiões HII : Grande nuvem de magalhaespt_BR
dc.subjectInterferometriapt_BR
dc.titleBalmer line photometry of the 30 doradus nebulapt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000145235pt_BR
dc.type.originEstrangeiropt_BR


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