Mathematics – Logic
Scientific paper
Jul 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002hst..prop.9470k&link_type=abstract
HST Proposal ID #9470
Mathematics
Logic
Hst Proposal Id #9470
Scientific paper
We propose a pilot study to obtain deep ACS Ly-alpha images of a carefully selected sample of local starburst galaxies. Ly-alpha imaging of such objects has become feasible with ACS. These observations will bring unprecedented insight into the processes regulating the luminosity of the cosmologically important Ly-alpha line. Our targets cover the full range of observed Ly-alpha properties. They have been chosen to investigate the effects of dust, the starburst luminosity, and outflows within the ISM. The sample is optimized for a most favorable trade-off between the relevant parameter space and the minimum number of orbits. We can build on this pilot study for a much larger follow-up survey in a later cycle. Deep H Alpha and H Beta high-resolution images from the ground will allow us to quantify the Ly-alpha emission {or its lack} and its attenuation as a function of the local dust content. The H Alpha emission at a given location will constrain the intrinsic intensity of the expected Ly-alpha emission. A non-detection will allow us to quantify the fraction of Ly- alpha photons destroyed within the neutral gas, and to correlate this fraction with the properties of the neutral gas and dust. Since Ly-alpha emitters are used to identify and study galaxies at redshift 3-6, our study will document the circumstances when a star-forming galaxy shows Ly-alpha emission. This will be an important first step towards an empirical calibration of the relation between Ly-alpha and the star-formation rate.
No associations
LandOfFree
Deep Lyman alpha images of starburst galaxies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Deep Lyman alpha images of starburst galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Deep Lyman alpha images of starburst galaxies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-733567