Chemical abundances in Seyfert galaxies : IX. Helium abundance estimates

Authors :: Dors Júnior, Oli Luiz
Valerdi, Mabel
Freitas-Lemes, Priscila
Krabbe, Angela Cristina
Riffel, Rogemar André
Amôres, Eduardo Brescansin de
Riffel, Rogério
Armah, Mark
Santos, Adriano Francisco Monteiro dos
Oliveira Junior, Celso Benedito de
Source :: Repositório Institucional da UFRGS, Universidade Federal do Rio Grande do Sul (UFRGS), instacron:UFRGS
Publication Year :: 2022
Abstract: For the first time, the helium abundance relative to hydrogen (He/H), which relied on direct measurements of the electron temperature, has been derived in the narrow line regions (NLRs) from a local sample of Seyfert 2 nuclei. In view of this, optical emission line intensities [3000 < λ(Å)

Subjects :: Galáxias ativas
Evolution [Galaxies]
Nuclei [Galaxies]
Evolucao galatica
ISM [Galaxies]
Abundances [Galaxies]
Formation [Galaxies]
Nucleo galatico
Active [Galaxies]

Language :: English
Database :: OpenAIRE
Journal :: Repositório Institucional da UFRGS, Universidade Federal do Rio Grande do Sul (UFRGS), instacron:UFRGS
Accession number :: edsair.od......3056..b721b23c8d8eecf82ddc0fa7525f17a7

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