Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21342426c&link_type=abstract
American Astronomical Society, AAS Meeting #213, #424.26; Bulletin of the American Astronomical Society, Vol. 41, p.250
Astronomy and Astrophysics
Astronomy
2
Scientific paper
We present the spectrophotometric redshifts (SPZs) of 1.5x104 galaxies observed as part of the Probing Evolution and Reionization Spectroscopically (PEARS) survey. This survey is an HST/ACS/G880L grism survey in the GOODS-N and S fields. Redshifts are measured using a combination of the slitless grism spectra and available broad-band data. Using the existing sample of over 3000 ground-based spectroscopic redshifts, we show that the average uncertainty in our SPZs is Δz/(1+z)≈0.038 in the redshift range of 0.5≤z≤1.25 where the 4000 Å break passes through the grism window. These redshifts are used to measure the z=1 galaxy luminosity function down to MB=-18.0 mag. PEARS is an HST Treasury Program and is supported by HST grant 10530.
Cohen Seth H.
Grogin Norman Andrew
Hathi Nimish P.
Malhotra Sagar
Meurer Gerhardt R.
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