CDS.headStuff2
ASU Extensions for CDS-VizieRThis page contains the definitions of the extensions to ASU.home adopted at CDS, essentially for the Ala.home usage; and for the data-mining project.
Summary of ASU Extensions at CDS:
* | indicates all default columns; |
** | indicates all columns (not only the default ones) |
*mime(type) | indicates the columns with a link to the specified mime type |
*ucd | indicates the columns corresponding to the specifed UCD |
_V | a column with just the letter V as a link to the full record |
_r | the distance from the center |
_x | the distance from the center projected toward East |
_y | the distance from the center projected toward North |
_RA(Equinox,Epoch) | the right ascension in another coordinate frame |
_DE(Equinox,Epoch) | the declination in another coordinate frame |
_Glon | the galactic longitude |
_Glat | the galactic latitude |
constraint_name=<<====sentinel
............
====sentinel
i.e. the first line contains the delimiter or sentinel placed immediately after the << sign. This sentinel indicates the end of the list; to be recognized, it has to be placed at the left margin.
As an example, the following is a list of targets:
-c=<<======EndListOfTargets=== 3C 273 NGC 4321 ======EndListOfTargets===