Water in the interstellar media of galaxies

Floris F. S. van Der Tak*

*Bijbehorende auteur voor dit werk

OnderzoeksoutputAcademicpeer review

1 Citaat (Scopus)
8 Downloads (Pure)


This paper reviews recent observations of water in Galactic interstellar clouds and nearby galactic nuclei. Two results are highlighted: (1) Multi-line H2O mapping of the Orion Bar shows that the water chemistry in PDRs is driven by photodissociation and -desorption, unlike in star-forming regions. (2) High-resolution spectra of H2O and its ions toward 5 starburst / AGN systems reveal low ionization rates, unlike as found from higher-excitation lines. We conclude that the chemistry of water strongly depends on radiation environment, and that the ionization rates of interstellar clouds decrease by at least 10 between galactic nuclei and disks.

Originele taal-2English
Pagina's (van-tot)395-399
Aantal pagina's5
TijdschriftProceedings of the International Astronomical Union
Nummer van het tijdschriftA29B
StatusPublished - aug.-2015

Citeer dit