Integral field spectroscopy of low-z QSOs and Seyfert galaxies. Dependence of EELRs on nuclear properties
Husemann, Bernd; Wisotzki, Lutz;Sánchez, Sebastian F.; Jahnke, Knud. Integral field spectroscopy of low-z QSOs and Seyfert galaxies. Dependence of EELRs on nuclear properties. Memorie della Societa Astronomica Italiana. 2008, Vol. v.79, p.1227 , p. -2008.
We present a preliminary analysis of 20 mainly radio-quiet low-z quasars and 12 Seyfert galaxies observed with an integral field spectrograph. Searching for extended emission-line regions (EELRs) around the active nuclei in these host galaxies, we find a relation between the nuclear properties and the presence of an EELR for both high and low-luminosity AGN. Only those AGN with weak \ion{Fe{ii} emission and broad Hbeta lines (FWHM >4000km/s) show an EELR. Furthermore, we find that the AGN luminosity cannot account for this apparent dichotomy. Differences in the structure of the nuclear region or differences in intrinsical properties of the host galaxies are required to explain our observations.
Based on observations collected at the Centro Astronómico Hispano Alemán (CAHA) at Calar Alto, operated jointly by the Max-Planck-Institut für Astronomie and the Instituto de Astrofísica de Andalucía (CSIC)
We present a preliminary analysis of 20 mainly radio-quiet low-z quasars and 12 Seyfert galaxies observed with an integral field spectrograph. Searching for extended emission-line regions (EELRs) around the active nuclei in these host galaxies, we find a relation between the nuclear properties and the presence of an EELR for both high and low-luminosity AGN. Only those AGN with weak \ion{Fe{ii} emission and broad Hbeta lines (FWHM >4000km/s) show an EELR. Furthermore, we find that the AGN luminosity cannot account for this apparent dichotomy. Differences in the structure of the nuclear region or differences in intrinsical properties of the host galaxies are required to explain our observations.
Based on observations collected at the Centro Astronómico Hispano Alemán (CAHA) at Calar Alto, operated jointly by the Max-Planck-Institut für Astronomie and the Instituto de Astrofísica de Andalucía (CSIC)