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Дата изменения: Mon Dec 23 18:23:59 2013 Дата индексирования: Fri Feb 28 17:29:33 2014 Кодировка: Поисковые слова: granules |
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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 |
| line code |
definition |
| 1 |
measurement from rotation curve |
| 2 |
measurement from radio line width |
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