Issue |
EAS Publications Series
Volume 52, 2011
Conditions and Impact of Star Formation
|
|
---|---|---|
Page(s) | 275 - 276 | |
DOI | https://doi.org/10.1051/eas/1152045 | |
Published online | 25 November 2011 |
M. Röllig, R. Simon, V. Ossenkopf and J. Stutzki (eds)
EAS Publications Series, 52 (2011) 275-276
Radiation Pressure Feedback in Galaxies
1
Department of Astronomy, The Ohio State University,
USA
e-mail: andrews@astronomy.ohio-state.edu &
thompson@astronomy.ohio-state.edu
2
The Center for Cosmology and Astroparticle Physics, The Ohio State
University, USA
We evaluate radiation pressure from starlight on dust as a feedback mechanism in
star-forming galaxies by comparing the luminosity and flux of star-forming systems to the
dust Eddington limit. The linear
LFIR– correlation
provides evidence that galaxies may be regulated by radiation pressure feedback. We show
that star-forming galaxies approach but do not dramatically exceed Eddington, but many
systems are significantly below Eddington, perhaps due to the “intermittency” of star
formation. Better constraints on the dust-to-gas ratio and the CO- and
HCN-to-H2 conversion factors are needed to make a definitive assessment of
radiation pressure as a feedback mechanism.
© EAS, EDP Sciences 2011