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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/33145
DC FieldValueLanguage
dc.contributor.authorBUZZONI, Albertoen_US
dc.contributor.authorPecci, F. F.en_US
dc.contributor.authorBuonanno, R.en_US
dc.contributor.authorCorsi, C. E.en_US
dc.date.accessioned2023-02-03T15:31:52Z-
dc.date.available2023-02-03T15:31:52Z-
dc.date.issued1983en_US
dc.identifier.issn0004-6361en_US
dc.identifier.urihttp://hdl.handle.net/20.500.12386/33145-
dc.description.abstractA new estimate of the helium abundance, Y, in globular cluster stars has been obtained through the application of the R-method of Iben (1968) to a sample of galactic globular clusters. A new calibration for the (R-Y) relation has been derived. The influence on the calibration of some theoretical uncertainties and of phenomena like mass loss have been analyzed. The procedure, applied to a sample of 15 clusters whose data reach a level of completeness and photometric accuracy enough to give statistically significant results, led to a mean value for Y equal to 0.23 + or - 0.02. A constant Y with varying metal content seems consistent with the data. The distribution of the number ratios of asymptotic and giant branch stars suggests the full development of the semiconvective zone for the stars of all the considered clusters.en_US
dc.language.isoengen_US
dc.titleHelium abundance in globular clusters: the R-methoden_US
dc.typeArticle-
dc.identifier.urlhttps://ui.adsabs.harvard.edu/abs/1983A%26A...128...94B/abstracten_US
dc.relation.mediumSTAMPAen_US
dc.relation.volume128en_US
dc.relation.firstpage94en_US
dc.type.refereeREF_1en_US
dc.relation.scientificsectorFIS/05 - ASTRONOMIA E ASTROFISICAen_US
dc.relation.journalASTRONOMY & ASTROPHYSICSen_US
dc.type.miur262 Articolo in rivista-
dc.identifier.adsbibcode1983A&A...128...94Ben_US
dc.description.apcnoen_US
dc.description.oa1 – prodotto con file in versione Open Access (allegare il file al passo  5-Carica)en_US
item.grantfulltextopen-
item.languageiso639-1en-
item.fulltextWith Fulltext-
item.openairetypeArticle-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
crisitem.journal.journalissn0004-6361-
crisitem.journal.anceE016240-
crisitem.author.deptOAS Bologna-
crisitem.author.orcid0000-0002-6514-1870-
Appears in Collections:1.01 Articoli in rivista
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