Below is a description of the fields of the table that can be accessed through the interfaces.
Heliocentric radial velocity (CZ) in km/s with
its uncertainty and quality flag in parentheses (in html displays).
value meaning 0 regular measurement <:tr>
1 uncertain measurement, its weight is decreased by a factor 2 when computing the average value 3 preliminary measurement, probably superseeded in a more recent publication, it is ignored unless no other measurement is available 4 compilation, it is ignored unless no other measurement is available 9 rejected measurement
Method of Measurement
| code | definition |
|---|---|
| 0 | unspecified method |
| 1 | optical measurement |
| 2 | radio measurement |
| 3 | optical measurement from a particular region (knot. region HII) |
| 4 | radio CO |
| 5 | radio OH |
| 6 | average of measurements of members |
| 7 | RVSAO (cross correlation) |
| 8 | EMSAO (emission lines) |
Resolution in km/s when the velocity comes from radio measurement
Line Code: code of the spectral line used for making a measurement
| code | definition |
|---|---|
| 0 |
unspecified |
| 1 |
emission line (like 21-cm line
or H_alpha line) |
| 2 |
absorption line |
| HyperLeda | Questions: leda@univ-lyon1.fr |