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The Nuclei of Nearby Radio-Loud Ellipticals

Published online by Cambridge University Press:  13 May 2016

G.A. Verdoes Kleijn ,
P.T. de Zeeuw ,
S.A. Baum ,
C.P. O'Dea ,
R.P. van der Marel ,
C. Xu ,
C.M. Carollo  and
J. Noel-Storr
G.A. Verdoes Kleijn
Affiliation:
Leiden Observatory, Postbus 9513, 2300 RA, Leiden, The Netherlands
P.T. de Zeeuw
Affiliation:
Leiden Observatory, Postbus 9513, 2300 RA, Leiden, The Netherlands
S.A. Baum
Affiliation:
Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
C.P. O'Dea
Affiliation:
Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
R.P. van der Marel
Affiliation:
Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
C. Xu
Affiliation:
Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
C.M. Carollo
Affiliation:
Columbia University, Dept. of Astronomy, New York, NY 10027, USA
J. Noel-Storr
Affiliation:
Columbia University, Dept. of Astronomy, New York, NY 10027, USA

Abstract

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We have observed a complete sample of 21 nearby (D < 70h −1Mpc) Fanaroff & Riley Type I galaxies with HST/WFPC2 and detected dust disks and lanes in 19 of them. The radio jets are roughly perpendicular to the dust which is used to constrain the Doppler boosting factors of the radio jet and cores. The VLBA core flux correlates with the central Hα+[NII] flux which might indicate that the VLBA core is dominated by an isotropic component. Twelve galaxies show nuclear optical sources. We discuss various possible origins for this emission.

Information

Type
The Inner Regions of Galaxies
Information
Symposium - International Astronomical Union , Volume 205: Galaxies and their Constituents at the Highest Angular Resolutions , 2001 , pp. 62 - 65
Copyright
Copyright © Astronomical Society of the Pacific 2001 

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