Characterizing the Star Formation History of a Highly Magnified z=5.6 Lyman Alpha Source

Details Characterizing the Star Formation History of a Highly Magnified z=5.6 Lyman Alpha Source Characterizing the Star Formation History of a Highly Magnified z=5.6 Lyman Alpha Source

Jul 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002hst..prop.9452e&link_type=abstract

HST Proposal ID #9452

Computer Science

Hst Proposal Id #9452

Scientific paper

We have located a remarkably faint pair of compact images arising from a z=5.6 Lyman Alpha emitting source, magnified 33-fold by the lensing foreground cluster Abell 2218. Keck spectra verify the lensing hypothesis but fail to locate any UV stellar continuum to interesting limits, suggesting the object is a 10^6 M_sun source viewed close to its epoch of formation. We argue the source could be representative of an abundant population of low mass systems forming their first stars at z>5, this example becoming visible only by virtue of the strong gravitational magnification. We seek HST imaging to provide much tighter constraints on the nature and distribution of starlight in this intriguing source. ACS will be used to investigate the spatial extent of UV continuum light on <100 pc scales also providing the equivalent width of the Lyman Alpha emission. NIC will be used to measure the slope of the rest- frame continuum in order to break age and mass degeneracies caused by the unknown amount of dust extinction. HST uniquely provides the resolution and sensitivity to gather detailed information on a remarkable source which may be representative of a population seen in future surveys with NGST.

Affiliated with

Also associated with

No associations

Rating

Characterizing the Star Formation History of a Highly Magnified z=5.6 Lyman Alpha Source 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 Characterizing the Star Formation History of a Highly Magnified z=5.6 Lyman Alpha Source, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Characterizing the Star Formation History of a Highly Magnified z=5.6 Lyman Alpha Source will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-733534