VELFIT | |
in=inten,veloc | |
centre=0,-60 | Rotation centre is 60 arcsec south of map centre. |
pa=40 | Position angle of major axis. |
incline=65 | The believed inclination of the disk. |
vsys=440 | Systemic velocity of the galaxy. |
log=rot.log | File to hold results - defaults to terminal. |
inten
is the (x,y) intensity distribution of data.cube
integrated over the z (velocity) axis. It is obtained using moment
as follows:
MOMENT | |
in=data.cube | |
out=iten | |
mon=-1 | Get average intensity. |
axis=3 | Squash along the third axis |
clip=-2.0,0.0 | Or whatever. |
veloc
is an (x,y) model for the velocity values, a mean velocity
image. It would be obtained as follows:
MOMENT | |
in=data.cube | Input dataset. |
out=veloc | The output dataset. |
mon=1 | First order moment. |
axis=3 | Squash along the third axis |
clip=-2.0,0.0 | Or whatever. |
Miriad manager