Star Forming Galaxies and AGN Hosts: The Seagull Wings
Abstract
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.
- Publication:
-
Galaxy Evolution across the Hubble Time
- Pub Date:
- May 2007
- DOI:
- 10.1017/S1743921306010064
- Bibcode:
- 2007IAUS..235..334S
- Keywords:
-
- galaxies: active;
- galaxies: starburst;
- emission lines: surveys