VSOP Survey Program observation of J1230+1223

J1230+1223

The data on this page are described in detail in
The VSOP 5 GHz AGN Survey: III. Imaging results for the first 102 sources
by Scott et al. in Astrophysical Journal Supplement, 155, 33-72 (November 2004) .
Please refer to this paper for details of the observations, analysis and interpretation.

The observation of J1230+1223 (3C274,M87) was made on 20-12-1997 (dd-mm-yyyy)
with HALCA and 4 ground radio-telescopes over a duration of 4:00 (hours:minutes).
Baselines to HALCA were not necessarily available for all of that time.
The survey code for this source is vs01a.
The observation was correlated at the Socorro correlator.
The source is classified as a galaxy at a redshift of 0.004.
Please refer to the paper for full details and references.

Results from modelfitting Gaussian components to the data
(Note that asterisks or carets after the flux density denotes a pair of overlapping components.)

  
                                 major   minor          Brightness  
Source        S      r     PA    axis    axis     PA    Temperature 
name         (Jy)  (mas)  (deg)  (mas)   (mas)   (deg)  (10^12 K) 

J1230+1223   0.18   0.7    93     0.0     0.0    ...      > 0.23  
             1.61*  2.5   -76     3.2     3.2    ...              
             0.60   0.4    18     0.8     0.4    -38              
             0.42*  0.9   -80     1.5     0.0     50

Specific notes in the above paper for this source are:
(3C274, M87) A VSOP image made from GOT data can be found in Junor et
al. (2000, Proc. VSOP Symposium, "Astrophysical Phenomena Revealed by
Space VLBI", p. 13). The four component model fit only accounts for
the small-scale structure. The faint core is unresolved subtending an
area of < 0.05 mas^2.

VSOP Survey Program image at 5 GHz
contour gif | contour ps.gz

Correlated flux density (Jy) vs. projected baseline length plot
gif | ps.gz

(u,v) coverage for the observation
gif | ps.gz

Last modified: 5 Nov 2004