The VizieR database is hosted and developped by the CDS.
This version of VizieR was released in November 2010.
1 Some useful hints for the VizieR usage
- 4 methods to search catalog:
- By target name (resolved by Sesame) or position
- By words using free text or predefined keywords
(it includes author, catalog name, title, description, etc.)
- By contents to search a type of data inside catalogs
(search a catalogs containing a table which have a column with
a given type (see UCD))
- By Browsing modes
by using lists or map maintened by the CDS.
Note:
The 3 first methods can be combined.
- Interoperability with external softwares:
- The interaction with the Portal.home enable you
to save the VizieR results into a personalized account.
This storage enable you to navigate inside the differents
CDS services.
- An XML output format (votable) enable you to
reuse VizieR results with softwares compatible with the
IVOA.home specifications.
- If your browser accepts JAVA, you can send your results directly
to SAMP
compatible softwares.
- The FITS format
for astronomically-oriented applications is available.
- Finally, output format like TSV (tab-separated values)
could be used with your favorite spreadsheet.
- Operations on catalogs:
- A set of catalogs can be joined into a single table if they have
a common column with an identical name.
- You can make a crossmatch between 2 or more tables of a set of
catalogs (however, the number of resulting rows is truncated to a
fixed number)
- An external list of constraintscan
be used to query 1 (or more) catalog(s).
- The VizieR navigation bar at the left of the page is available throughout
your navigation. It remembers your choices and enable you to
modify the output.
Note:
Currently the VizieR application use the
POST method to
navigate.
This approach can be problematic for bookmarking. However, you can save your
result with using the
Portal.home; or click on the image
![bookmark](/vizier/B.png)
(in the
VizieR navigation bar ) to update the current Page in a
GET form.
2 Overview
A query in VizieR can be achieved:
Note:
The result layout can be modified in all steps described above
A tutorial
presents the basic VizieR functionnalities.
last update: 13 Feb 2024