Proposal code
w024
Proposal title
THE BASE OF THE JET IN FR-I/FR-II TRANSITION OBJECT NGC6251
The |
Investigators and their |
Affiliations |
| P.I. |
Dayton L.Jones |
Jet Propulsion Laboratory, Caltech, USA |
| |
Ann E.Wehrle |
Infrared Processing & Analysis Center, Caltech, USA |
Proposal Abstract
We propose to image the base of the unusually long and straight radio jet
associated with the elliptical galaxy NGC 6251 at both 1.6 and 5 GHz.
This object has a radio
luminosity near the dividing line between FR-I and FR-II radio galaxies
and indeed contains some morphological features from each class: a prominent
jet (and weaker counterjet) and two widely separated radio lobes containing
``warm spot" where the jets appear to terminate. Previous ground-based global
VLBI observations of NGC 4261 at 1.6 GHz have produced a series of high
dynamic range images. These indicate a wide range of apparent proper motions
for features in the first 30 mas of the jet, with a nearly stationary feature
always visible \approx 25 mas from the base of the jet and possible much
faster motions within 12 mas of the base. Higher resolution
images of the first several mas will clarify the
jet morphology in the region where rapid apparent motion occurs.
The full Cover Sheets
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be retrieved. Note that many proposals were reduced in extent by the
Scientific Review Committee (e.g. by reducing the number of
experiments), however the Cover Sheets contain the full proposal as
submitted. Also note that AO2 proposals were submitted in May 1998,
and information such as affiliations and contact details has
changed for some proposers since that time. The Cover Sheets (and the
details on this page, which were derived from the Cover Sheets) may
therefore have changed.