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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



ID: 308658.0, MPI für Astronomie / Publikationen_mpia
VLT on-axis spectroscopy of quasar host galaxies
Authors:Letawe, G.; Magain, P.; Courbin, F.; Jablonka, P.; Meylan, G.; Jahnke, K.; Wisotzki, L.
Date of Publication (YYYY-MM-DD):2006
Journal Abbrev.:New Astronomy Reviews
Volume:50
Start Page:779
End Page:781
Audience:Not Specified
Abstract / Description:We present the full analysis of our sample of 20 bright low redshift quasars (MB < -23 and z < 0.35), observed spectroscopically with the VLT FORS1, with objectives of characterizing the hosts and trying to understand how quasars are fueled or triggered. Applying the MCS deconvolution method, we are able to separate the galactic light from the quasar light, enabling i.e. global analysis of the gaseous and stellar content and gaseous dynamics. We find that 45% of the sample show signs of interaction, while half of the quasars are hosted in spiral galaxies, even when brighter than MV = -23.5. We also find many galaxies containing gas ionized by the quasar radiation far from the nucleus, all of these showing interaction or merger signs. We find spectroscopic evidences that such interactions bring gas in the broad and narrow line regions and power the nucleus.
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bi...
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