Computer Science
Scientific paper
Feb 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003noao.prop..434m&link_type=abstract
NOAO Proposal ID #2003A-0434
Computer Science
Scientific paper
The Large Area Lyman Alpha survey has successfully identified the population of young Lyα emitting galaxies predicted over 30 years ago. High equivalent widths of Lyα line in these sources suggest that they are a very young (age < 10^7 years), metal poor, population of stars at redshifts 4.5, 5.7 and 6.6, making them very interesting objects to study in the context of galaxy formation scenarios. We have begun to do exactly this using the correlation function of LALA galaxies, with fairly puzzling results. Before this leads to more complications in theoretical galaxy formation scenarios, we would like to put the observational results on a firm footing. In order to do that we ask for one night of Keck/Deimos time for spectroscopic confirmation of 50 secure LALA sources at z=4.5, and a similar number of fainter sources, in order to (1) characterize the completeness of this survey, and (2) weed out foreground emission line galaxies which affect the small scale correlation function. The excellent match between wide-field capabilities of DEIMOS and the LALA survey will allow the most complete confirmation and characterization of the high redshift Lyα population yet in terms of photometric sample reliability, while our planned spectra of foreground emission line galaxies will lead to a characterization of emission line selected star-forming galaxies at 0.25 < z < 1.5. We will use our spectroscopic sample to obtain a clean measurement of the small scale correlations among Lyα galaxies (which are clearly seen in our photometric sample). This will let us understand the halo mass, occupancy number, and duty cycle of these objects, and hence better how Lyα sources fit into the bigger picture of galaxy formation.
Dey Arjun
Jannuzi Buell
Malhotra Sangeeta
Rhoads James
No associations
LandOfFree
Lyman Alpha Galaxies and Galaxy Formation Scenarios 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 Lyman Alpha Galaxies and Galaxy Formation Scenarios, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lyman Alpha Galaxies and Galaxy Formation Scenarios will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-912452