Compilation of rotation of the galaxies from gas |
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Rotation of the galaxy from gas.
In a few cases the measurment is made from stellar content. This is the
case for elliptical galaxies.
Twice the rotation velocity of the gas
(logarithm of
km/s) with uncertainty and
quality flag in parentheses
This quantity is the logarithm of a radio line width. It corresponds
roughly to log of twice the velocity rotation.
Telescope
The definitions are given in the "telescopes_codes" table:
Level of the measurement (when it is line width)
code |
definition |
0 |
undefined level (or rotation
curve) |
1 |
20% of the maximum |
2 |
25% of the maximum |
3 |
35% of the maximum |
4 |
40% of the maximum |
5 |
50% of the maximum |
6 |
20% of the mean flux |
7 |
25% of the mean flux |
8 |
50% of the mean flux |
9 |
mean of code 1 and 8 |
11 |
20% of the mean of the two peak values, W2P20 |
12 |
25% of the mean of the two peak values, W2P25 |
13 |
50% of the mean of the two peak values, W2P50 |
line code |
definition |
1 |
measurement from rotation curve |
2 |
measurement from radio line width |
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