VizieR Online Data Catalog: IRAS 16293-2422 spectral cubes (van der Wiel+, 2019)
Résumé
This data collection contains nine spectral cubes (RA, DE, frequency) extracted from the ALMA-PILS dataset. The observation setup and details concerning the processing performed are given in Jorgensen et al. (2016A&A...595A.117J) and van der Wiel et al. (2019A&A...626A..93V). In short, interferometric baselines of the ~47 element array range up to 300m. Phase-only self-calibration was performed based on the continuum signal, first separately for the Atacama Compact Array (ACA) and the main ALMA array. The final imaging of the combined dataset used Briggs waiting with robust=0.5 and a restoring beam fwhm of 0.5-arcsec was imposed. The resulting spectral cubes samples angular scales between 0.5-arcsec and 13-arcsec. Spectral channels are uniform in frequency space, each being 0.244MHz wide. The FITS cubes delivered here cover a frequency range defined by ±20km/s centered around the rest frequency of the following molecular transitions (see also Table 2 in the paper): * 337.06100GHz (C17O 3-2); * 345.79600GHz (CO 3-2); * 345.33977GHz (H13CN 4-3); * 351.76864GHz (o-H2CO 5(1,5)-4(1,4)); * 343.32571GHz (o-H2(13C)O 5(1,5)-4(1,4)); * 337.39646GHz (C34S 7-6); * 347.33058GHz (SiO 8-7); * 342.98084GHz (29SiO 8-7); * 349.39997GHz (C2H 4(7/2)-3(5/2)). Broadband continuum signal has been substracted following the strategy outlined in Sect. 3.1.2 of Jorgensen et al. (2016A&A...595A.117J), which is needed to cope with the extremely high density of line signal in the spectral domain. (2 data files).