The page gives an overview of the data, and acts as a repository to download data.
The data cubes that can be downloaded here are the result of a data reduction using 5 different combinations of Robust weighting (Robust 0, Robust 0.4, Robust 6, indicated by "Rob" in the table) and tapering (no tapering, 0, 30 arcsec tapering, "30").
We use a source finder to produce a mask that outlines tentative volumes with emission in the data cube. Using that mask, a total-intensity map (moment-0) and a velocity field is calculated. Furthermore, we calculate the source total HI fluxes within tentatively detected volumes.
The file names (which differ from the entries in the tables) are coded such that they identify the data sets:
jrrrrrr_dddddd_rl.m_tnn_suffix.fits(.gz)
denotes a data set from an observation of the main target with
the (J2000) right ascension rrrrrr (hhmmss)
the (J2000) right declination dddddd (ddmmss)
Robust weighting l.m
tapering of nn arcseconds (tapering equivalent to a convolution with a Gaussian with nn arcsec HPBW in the image domain)
a suffix describing the data type
For each weighting scheme, we provide
a total-intensity map in units of Jy km/s /beam, using the complete mask from the source finder (suffix m0sa)
a total-intensity map in units of 10^20 atoms cm^-2, using the same full mask (suffix m0ca)
a intensity-weigthed mean (moment-1) velocity field (suffix m1s)
a velocity field resulting from a fit of Gaussian-Hermite functions to the data cube (not for all weighting schemes, suffix hermite)
a data cube (no suffix)
a mask (data cube of the same size) used to determine volumes of emission in the data cubes (suffix mask)
a source catalogue (suffix _obj_abs)
