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Star Forming Galaxies and AGN Hosts: The Seagull Wings

Published online by Cambridge University Press:  01 August 2006

Grazyna Stasińska ,
Roberto Cid Fernandes ,
Abílio Mateus ,
Laerte Sodré Jr.  and
Natalia V. Asari
Grazyna Stasińska
Affiliation:
LUTH, Observatoire de Meudon, 92195 Meudon Cedex, France
Roberto Cid Fernandes
Affiliation:
Departamento de Física, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
Abílio Mateus
Affiliation:
Departamento de Astronomia, IAG-USP, Rua do Matão 1226, 05508-090, São Paulo, Brazil
Laerte Sodré Jr.
Affiliation:
Departamento de Astronomia, IAG-USP, Rua do Matão 1226, 05508-090, São Paulo, Brazil
Natalia V. Asari
Affiliation:
Departamento de Física, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
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Abstract

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Using photoionization models applied to the data from the Sloan Digital Sky Survey (SDSS) we propose a physically motivated dividing line in the [OIII]/Hβ vs [NII]/Hα (BPT) diagram between normal star forming (NSF) galaxies and AGN hosts. We also propose a new diagnostic diagram which can be used for optical spectra of galaxies with redshifts up to z= 1.3.

Keywords

galaxies: active — galaxies: starburst — emission lines: surveys
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S235: Galaxy Evolution Across the Hubble Time , August 2006 , pp. 334
Copyright
Copyright © International Astronomical Union 2007

References

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Kewley, L. J., 2001, ApJ, 556, 121CrossRefGoogle Scholar
Stasińska, G., Cid Fernandes, R., Mateus, A., 2006, MNRAS, 371, 972CrossRefGoogle Scholar