Other
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...201.5221r&link_type=abstract
American Astronomical Society, 201st AAS Meeting, #52.21; Bulletin of the American Astronomical Society, Vol. 34, p.1195
Other
2
Scientific paper
The ACS Pure Parallel Lyman-alpha Emission Survey (APPLES) is a new project to obtain simultaneous, deep images and spectra of random extragalactic fields. APPLES exploits slitless grism observations with the Advanced Camera for Surveys on the Hubble Space Telescope to achieve high sensitivity over a wavelength range uninterrupted by night sky emission lines. It will thereby provide a sample of Lyman alpha emitting galaxies with a smooth selection function over the redshift range 4 to 7, affording unmatched opportunities to study both the evolution of the Lyman alpha emitting galaxies and the possible drop in Lyman alpha counts at the epoch of reionization. In addition, APPLES can identify a wide range of other interesting objects: Lyman break galaxies to magnitude I=25.5, quasars to at least I=26, foreground emission line galaxies, normal and star-forming elliptical galaxies, and extremely red objects. The first APPLES data are in hand. We present sample spectra representing a broad cross-section of the expected APPLES science topics, together with early science results.
Cimatti Andrea
Cristiani Stefano
Daddi Emanuele
di Serego Alighieri Sperello
Gronwall Caryl
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