Hydrogen volume densities in nearby galaxies : J/MNRAS/428/3355


Authors : Heiner J.S. orcid , Sanchez-Gallego J.R., Rousseau-Nepton L. (hide) , Sanchez-Gallego J.R., Rousseau-Nepton L. et..al

Bibcode : 2013MNRAS.428.3355H (ADS) (Simbad) (Objects) (hide)

CDS Keywords : Galaxies, nearby; H I data; Ultraviolet
UAT : Galaxies, H I line emission, Ultraviolet astronomy

Observation (OC)

Records :

Inserted into VizieR : 04-Apr-2014
Last modification : 20-Jul-2024

Hydrogen volume densities in nearby galaxies. I. An automated approach. (2013)

Keywords : ISM atoms - ISM: clouds - ISM: molecules - galaxies: individual: M74 - galaxies: ISM - ultraviolet: galaxies

Abstract:Using a simple model of photodissociated atomic hydrogen on a galactic scale, it is possible to derive total hydrogen volume densities. These densities, obtained through a combination of atomic hydrogen, far-ultraviolet and metallicity data, provide an independent probe of the combined atomic and molecular hydrogen gas in galactic discs. We present a new, flexible and fully automated procedure using this simple model. This automated method will allow us to take full advantage of a host of available data on galaxies in order to calculate the total hydrogen volume densities of the giant molecular clouds surrounding sites of recent star formation. Until now this was only possible on a galaxy-by-galaxy basis using by-eye analysis of ...(more)
Abstract: (hide)

  • J/MNRAS/416/2 : Photodissociation regions in M33 (Heiner+, 2011)

                
Catalogue provenance