Dr Helga Dénes
CSIRO Astronomy and Space Science, PO Box 76, Epping NSW 1710
RSAA, Mount Stromlo Observatory, Cotter Road, Weston Creek ACT 2611
Email: helga[dot]denes[at]anu.edu.au / helga[dot]denes[at]csiro.au
Phone: +61 2 9372 4260 (CSIRO)
Research Interests
My main research interests are galaxy evolution and the gas content of galaxies.
For my Phd I was investigating scaling relations between the neutral hydrogen (HI) content of galaxies with its optical properties and HI-deficient galaxies. HI-deficient galaxies are galaxies that have a much lover HI content compared to average late-type galaxies. The gas from these galaxies was most likely removed by tidal stripping or ram pressure stripping.
Currently I'm working on determining the nature of 'dark gas' in the Milky Way. There is evidence that the interstellar medium of the Milky Way and also some nearby galaxies contains large amounts of gas that is unseen in HI and CO observations. This gas is predominantly found around molecular clouds and is most likely composed of a mixture of optically thick atomic hydrogen and molecular hydrogen that is not traced by CO emission.
Publications
My publications can be found here.