Task: clstats Purpose: Calculate dispersions, masses, etc for each clump from clfind file Categories: utility The mass is calculated in the following way; we define X such that, X * (sum T) * delv = column density of molecular hydrogen in units of 10^20 cm-2 which implies that to convert to a mass, multiply by 10^20 * meanmol * m(H_2) * Area Key: in file name of data cube (no default) Key: dist the distance to the object in pc (no default) Key: disterr multiplicative error in the distance eg disterr=2 means dist is uncertain by a factor of 2 (default=1) Key: x the X-factor to convert between column density of the species observed to the column density of molecular hydrogen --- see above. (Note that this includes any corrections for abundance, excitation temperature, CMBR, antenna efficiency,etc.) (In units of 10^20, default=2.4) Key: xerr multiplicative error in X -- from uncertainties in abundances, excitation temperature, efficiency, etc. (default=1) Key: meanmol the mean molecular weight of the gas (default=1.38, corresponding to n(He)/n(H)=0.1) Key: jyperk the number of Jansky's per Kelvin for these observations (default=1) Key: xy "rel" or "abs" for the clump positions - v is always absolute (default=relative) Key: rms optional input to specify the rms error in temperature for each pixel in the map (used to calcuate errors in the masses). Otherwise 0.5*DeltaT, where DeltaT is the clfind contour interval. Key: nmin each clump must contain at least nmin pixels to be written out to output file (default=4)

Generated by miriad@atnf.csiro.au on 02 Jun 2021