A MWISP dataset of 12CO/13CO emissions toward the Cygnus region

The Milky Way Imaging Scroll Painting (Su et al. 2019) project is an ongoing CO survey by using the PMO-13.7 m millimeter-wavelength telescope at Delingha, China. The survey observes 12CO, 13CO and C18O simultaneously toward the northern Galactic plane. The data cube to Cygnus is clipped in the range, l : 72º ~ 87º, b : -5.1º ~ 5.1º. We resampled the velocity channels of all three lines to 0.2 km•s-1 (the corresponding RMS level is 0.42 K for 12CO, 0.22 K for 13CO and C18O) to reduce the bias in data processing.

The resultant data are in -45 ~ 40 km•s-1, covering the major emission of Cygnus. The uploaded data is reduced using a moment masking method: pixels with three consecutive channels larger than 3 times the noise RMS for 12CO, and all fitted pixels based on Gaussian decomposition in this work for 13CO, respectively.All data cubes are presented in standard FITS format, which can be read by SAO DS9, IDL, and astropy module in Python, etc.