Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21933516c&link_type=abstract
American Astronomical Society, AAS Meeting #219, #335.16
Astronomy and Astrophysics
Astronomy
Scientific paper
We observed emission line galaxies (ELG) in the redshift range [0.6,1.6] with 2.5m Sloan telescope spectrograph.
We explored two different color selections using the SDSS or CFHT-LS photometry u, g, r, and g, r, i, in order to select ELGs in different redshift bins. For this survey, the typical 5 sigma flux detection limit of the [OII] emission line is 5e-17 erg/s/cm2. We assembled a dataset of about one thousand spectra of ELGs. The highest redshift confirmed by the detection of the [OII] doublet is 1.622. In the case of a photometry as precise as CFHT-LS, up to 80% of the selected targets have a reliable redshift assigned.
These results combined with simulations confirm the feasibility of massive ELG surveys for a first BAO measurement in the redshift window 0.6-1.6 using BOSS spectrograph, giving the strongest support to BigBOSS observation strategy regarding ELGs.
BigBOSS Collaboration
BOSS Collaboration
Comparat Johan
Ealet Anne
Escoffier Stephanie
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