A High-resolution Mosaic of the Neutral Hydrogen in the M81 Triplet (Q6719560)

This dataset shows the distribution of neutral hydrogen in and around the M81 galaxy triplet (M81, M82, NGC 3077) and consists of a 3 3, 105-pointing, high-resolution neutral hydrogen (H I) mosaic obtained with the Very Large Array C and D arrays. The data are described in the paper by de Blok et al. (2018). Here we provide the following data products: Cubes: the natural-weighted cube of the VLA C+D mosaic: m81.nat.cube.fits the robust-weighted cube of the VLA C+D mosaic: m81.rob.cube.fits the natural-weighted cube using only D-array-like baselines: m81_D.nat.cube.fits the natural-weighted and zero-spacing corrected data cube of the VLA C+D array and GBT single-dish data from Chynoweth et al. (2011): m81.zero.cube.fits Moment maps: natural-weighted zeroth (column density), first (velocity field) and second (velocity dispersion) moment maps of the VLA C+D mosaic: m81.nat.mom[0,1,2].fits robust-weighted zeroth (column density), first (velocity field) and second (velocity dispersion) moment maps of the VLA C+D mosaic: m81.rob.mom[0,1,2].fits natural-weightedzeroth, first and second moment maps of the D-array mosaic: m81_D.nat.mom[0,1,2].fits zero-spacing corrected natural-weighted integrated HI map (zeroth-moment) of VLA C+D and GBT data: m81.zero.mom0.fits Acknowledgements: If you make use of these data please cite the original paper: de Blok et al. (2018) - de Blok, W.J.G., Walter, F., Ferguson, A.M.N., et al. 2018, ApJ, 865, 26 (10.3847/1538-4357/aad557)