On the metal abundance of low-activity galactic nuclei

dc.contributor.author	Storchi-Bergmann, Thaisa	pt_BR
dc.contributor.author	Pastoriza, Miriani Griselda	pt_BR
dc.date.accessioned	2014-12-31T02:10:48Z	pt_BR
dc.date.issued	1989	pt_BR
dc.identifier.issn	0004-637X	pt_BR
dc.identifier.uri	http://hdl.handle.net/10183/108716	pt_BR
dc.description.abstract	The characteristics of the nuclear spectrum of six Seyfert 2 and LINER nuclei with low activity and strong !ines of ionized nitrogen are investigated. From the equivalent widths of the absorption !ines, the age and metallicity of the stellar population are derived. A comparison of the observed emission-line intensities with photoionization and shock model calculations leads to the conclusion that these nuclei are photoionized by a power-law continuum, and that the only way to reproduce the large [N n]/H(X ratio for at least four of them is with an overabundance of nitrogen relative to the other heavy elements.	en
dc.format.mimetype	application/pdf	pt_BR
dc.language.iso	eng	pt_BR
dc.relation.ispartof	The astrophysical journal. Chicago. Vol. 347, no. 1, pt. 1 (Dec. 1989), p. 195-200	pt_BR
dc.rights	Open Access	en
dc.subject	Observações astronômicas no visível	pt_BR
dc.subject	Galaxies: abundances	en
dc.subject	Galaxies: stellar content	en
dc.subject	Nucleo galatico	pt_BR
dc.subject	Espectros astronômicos	pt_BR
dc.title	On the metal abundance of low-activity galactic nuclei	pt_BR
dc.type	Artigo de periódico	pt_BR
dc.identifier.nrb	000014806	pt_BR
dc.type.origin	Estrangeiro	pt_BR

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