VizieR Online Data Catalog: Cold HI, H2 and total H column density FITS maps (Kalberla+, 2020)
Abstract
We use a Gaussian decomposition of HI4PI data (Haud, 2000A&A...364...83H, HI4PI Collaboration et al. 2016, Cat. J/A+A/594/A116) to derive all-sky HI column densities and Doppler temperatures TD. Assuming a constant gas-to-dust ratio we derive TD dependent CO-dark H2 column densities, further from a constant XCO factor CO-bright H2 column densities.
For column densities in the velocity range -90<vlsr<90km/s we present FITS maps for CO-dark H2, total H2 (CO-dark and CO-bright) and total hydrogen (HI + CO-dark and CO-bright H2). In addition we give CO-dark H2 column densities for the velocity range -8<vlsr<8km/s, characteristic for filaments in the local vicinity. HEALPix FITS data for other velocity ranges can be downloaded from https://www.astro.uni-bonn.de/hisurvey/ also HI profiles and column densities at individual positions are given there. The FITS binary tables contain column densities sampled on a HEALPix grid (nside=1024, Galactic coordinates, Ring indexing scheme, Gorski et al., 2005ApJ...622..759G). (2 data files).- Publication:
-
VizieR Online Data Catalog
- Pub Date:
- May 2020
- DOI:
- 10.26093/cds/vizier.36390026
- Bibcode:
- 2020yCat..36390026K
- Keywords:
-
- Surveys;
- H I data;
- Milky Way;
- Interstellar medium;
- Spectroscopy