The database of brightness distributions, correlated flux densities and
images of compact radio sources produced with VLBI
The database contains 29,354 brightness
distributions of 4351 compact radio sources,
mainly active galaxy nuclea (AGN),
generated by analyzing very long baseline interferometry
(VLBI
) surveys — dedicated radioastronomy observations of large lists
of radio sources on networks of radio telescopes spread at distances of
thousand kilometers. The primary database contents is not pictures, but
brightness distribution in a digital form,
specifically in
FITS format,
and calibrated visibility data, which makes it possible to use
this database for scientific work. Derived quantities, such as visualization
of images and estimates of the correlated flux density are also available.
The images were contributed by courtesy of several
authors.
The database can be searched using one
of these methods:
-
Alphabetic list of source J2000-names
-
Search by name
-
Search by position
In addition to brightness distribution, estimates of the correlated flux density
from VLBI experiments for a number of sources are available. Currently, they
are not included in the database and are not searched.
The contents of the database can also
accessible as
Each image is represented with six files:
- the calibrated and edited set of visibility (i.e. cross-correlation
function) points in
FITS format;
- the set of clean components that models the source brightness
distribution in
FITS format;
- the picture of the source image in
Postscript format;
- the plot of dependence of the correlated flux density
on the baseline length in Postscript format;
- the plot of the uv-coverage;
- the table with the total correlated flux density; the median
correlated flux density at baseline lengths less than 900 km,
the median correlated density at baseline lengths greater than
5000 km. For many sources images at more than one epoch, at more
than one frequency bands are available.
The images in
FITS format submitted by authors were pre-processed to
a standardized form. The process of standardization involved: a) assignment
of new names to each file; b) adding 14 new keywords in the FITS headers;
c) removal of lengthy history records; d) generating the pictures and plots
in Postscript format; e) generating the table with estimates of the
correlated flux density.
Authors who contributed images (in alphabetic order)
- Nichols Corey
- Alan Fey
- Ed Fomalont
- Yuri Y. Kovalev
- Sang-Sung Lee
- Alan Marsher
- Members of the MOJAVE project team: Matt Lister, Dan Homan,
Rene Vermeulen
- Roopesh Ojha
- Alexandr Pushkarev
- Greg Taylor
Usage policy
You can download and use the contents of this database for your personal use.
If you would like to reproduce images from this database in any sort of
publications, please ask permission of the image's author. The author will
instruct you how to acknowledge properly his contribution. You can put
a reference to this database or any file from this database in any electronic
or printed document. If you would like to make available on the Web the entire
copy of this database, please ask permission of the maintainer.
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This web page was prepared by Leonid Petrov
(
)
Last update: 2012.04.27_07:41:04