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Preliminary Target Selection for the DESI Bright Galaxy Survey (BGS)
- Ruiz-Macias, Omar;
- Zarrouk, Pauline;
- Cole, Shaun;
- Norberg, Peder;
- Baugh, Carlton;
- Brooks, David;
- Dey, Arjun;
- Duan, Yutong;
- Eftekharzadeh, Sarah;
- Eisenstein, Daniel J;
- Forero-Romero, Jaime E;
- Gaztañaga, Enrique;
- Hahn, ChangHoon;
- Kehoe, Robert;
- Landriau, Martin;
- Lang, Dustin;
- Levi, Michael E;
- Lucey, John;
- Meisner, Aaron M;
- Moustakas, John;
- Myers, Adam D;
- Palanque-Delabrouille, Nathalie;
- Poppett, Claire;
- Prada, Francisco;
- Raichoor, Anand;
- Schlegel, David J;
- Schubnell, Michael;
- Tarlé, Gregory;
- Weinberg, David H;
- Wilson, MJ;
- Yèche, Christophe
- et al.
Published Web Location
https://doi.org/10.3847/2515-5172/abc25aAbstract
Abstract: The Dark Energy Spectroscopic Instrument (DESI) will execute a nearly magnitude-limited survey of low redshift galaxies (0.05 ≤ z ≤ 0.4, median z ≈ 0.2). Clustering analyses of this Bright Galaxy Survey (BGS) will yield the most precise measurements to date of baryon acoustic oscillations and redshift-space distortions at low redshift. DESI BGS will comprise two target classes: (i) BRIGHT (r < 19.5 mag), and (ii) FAINT (19.5 < r < 20 mag). Here we present a summary of the star-galaxy separation, and different photometric and geometrical masks, used in BGS to reduce the number of spurious targets. The selection results in a total density of ∼800 objects deg−2 for the BRIGHT and ∼600 objects deg−2 for the FAINT selections. A full characterization of the BGS selection can be found in Ruiz-Macias et al.
Main Content
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