Issue |
A&A
Volume 592, August 2016
|
|
---|---|---|
Article Number | A121 | |
Number of page(s) | 18 | |
Section | Cosmology (including clusters of galaxies) | |
DOI | https://doi.org/10.1051/0004-6361/201527377 | |
Published online | 09 August 2016 |
SDSS-IV eBOSS emission-line galaxy pilot survey⋆
1 Instituto de Fisica Teorica UAM/CSIC, Universidad Autónoma de
Madrid, Cantoblanco, 28049 Madrid, Spain
e-mail: j.comparat@csic.es
2 Departamento de Fisica Teorica,
Universidad Autónoma de Madrid, Cantoblanco, 28049
Madrid,
Spain
3 Laboratoire d’Astrophysique, École
Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny,
1290
Versoix,
Switzerland
4 Department of Physics and Astronomy,
University College London, Gower
Street, London WC1E6 BT, UK
5 CEA, Centre de Saclay, IRFU/SPP, 91191
Gif-sur-Yvette,
France
6 Aix Marseille Université, CNRS, LAM
(Laboratoire d’Astrophysique de Marseille) UMR 7326, 13388
Marseille,
France
7 Department of Physics &
Electronics, Rhodes University, 6140
Grahamstown, South
Africa
8 Institute of Cosmology and
Gravitation, University of Portsmouth, Portsmouth, PO1 3FX, UK
9 Department of Physics &
Astronomy, Johns Hopkins University, 3400 N. Charles Street, Baltimore, MD
21218,
USA
10 Instituto de Astrofísica de
Andalucía (CSIC), Glorieta de la
Astronomía, 18080
Granada,
Spain
11 Lawrence Berkeley National
Laboratory, 1 Cyclotron
Road, Berkeley,
CA
94720,
USA
12 Key Laboratory of Optical
Astronomy, National Astronomical Observatories, Chinese Academy of Sciences,
100012
Beijing, PR
China
13 Department of Physics and
Astronomy, University of Utah, 115
S 1400 E, Salt Lake
City, UT
84112,
USA
14 Apache Point Observatory and New
Mexico State University, PO Box
59, Sunspot,
NM, 88349-0059,
USA
15 Sternberg Astronomical Institute, Moscow State University,
Moscow
16 CPPM, Aix-Marseille Université,
CNRS/IN2P3, 13388
Marseille,
France
17 Department of Physics and Astronomy
and PITT PACC, University of Pittsburgh, Pittsburgh, PA
15260,
USA
18 Department of Astronomy and
Astrophysics, The Pennsylvania State University, University Park, PA
16802,
USA
19 Institute for Gravitation and the
Cosmos, The Pennsylvania State University, University Park, PA
16802,
USA
20 Cerro Tololo Inter-American
Observatory, National Optical Astronomy Observatory, Casilla 603, La Serena, Chile
21 Fermi National Accelerator
Laboratory, PO Box
500, Batavia,
IL
60510,
USA
22 Institute of Astronomy, University
of Cambridge, Madingley
Road, Cambridge
CB3 0HA,
UK
23 Kavli Institute for Cosmology,
University of Cambridge, Madingley
Road, Cambridge
CB3 0HA,
UK
24 CNRS, UMR 7095, Institut
d’Astrophysique de Paris, 75014
Paris,
France
25 Sorbonne Universités, UPMC Univ
Paris 06, UMR 7095, Institut d’Astrophysique de Paris, 75014
Paris,
France
26 Laboratório Interinstitucional de e-Astronomia
− LIneA, Rua Gal. José
Cristino 77, Rio de Janeiro, RJ − 20921-400, Brazil
27 Observatório Nacional,
Rua Gal. José Cristino 77, Rio de Janeiro, RJ -
20921-400,
Brazil
28 Department of Astronomy, University
of Illinois, 1002 W. Green
Street, Urbana,
IL
61801,
USA
29 National Center for Supercomputing
Applications, 1205 West Clark St., Urbana, IL
61801,
USA
30 Institut de Ciències de l’Espai,
IEEC-CSIC, Campus UAB, Carrer de
Can Magrans, s/n, 08193 Bellaterra, Barcelona, Spain
31 Institut de Física d’Altes
Energies, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona,
Spain
32 Kavli Institute for Particle
Astrophysics & Cosmology, PO Box 2450, Stanford University,
Stanford,
CA
94305,
USA
33 Excellence Cluster Universe,
Boltzmannstr. 2,
85748
Garching,
Germany
34 Faculty of Physics,
Ludwig-Maximilians University, Scheinerstr. 1, 81679
Munich,
Germany
35 Department of Physics and
Astronomy, University of Pennsylvania, Philadelphia, PA
19104,
USA
36 Jet Propulsion Laboratory,
California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA
91109,
USA
37 Kavli Institute for Cosmological
Physics, University of Chicago, Chicago, IL
60637,
USA
38 Department of Physics, University
of Michigan, Ann
Arbor, MI
48109,
USA
39 Max Planck Institute for
Extraterrestrial Physics, Giessenbachstrasse, 85748
Garching,
Germany
40 Universitäts-Sternwarte, Fakultät
für Physik, Ludwig-Maximilians Universität München, Scheinerstr. 1, 81679
München,
Germany
41 Center for Cosmology and
Astro-Particle Physics, The Ohio State University, Columbus, OH
43210,
USA
42 Department of Physics, The Ohio
State University, Columbus, OH
43210,
USA
43 Australian Astronomical
Observatory, North
Ryde, NSW
2113,
Australia
44 Departamento de Física Matemática,
Instituto de Física, Universidade de São Paulo, CP66318, CEP 05314-970, São
Paulo, SP,
Brazil
45 George P. and Cynthia Woods
Mitchell Institute for Fundamental Physics and Astronomy, and Department of Physics
and Astronomy, Texas A&M University, College Station, TX
77843,
USA
46 Institució Catalana de Recerca i
Estudis Avançats, 08010
Barcelona,
Spain
47 SLAC National Accelerator
Laboratory, Menlo
Park, CA
94025,
USA
48 Department of Physics and
Astronomy, Pevensey Building, University of Sussex, Brighton, BN1 9QH, UK
49 Centro de Investigaciones
Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain
50 Department of Physics, University
of Illinois, 1110 W. Green
St., Urbana,
IL
61801,
USA
Received:
16
September
2015
Accepted:
13
June
2016
The Sloan Digital Sky Survey IV extended Baryonic Oscillation Spectroscopic Survey (SDSS-IV/eBOSS) will observe 195 000 emission-line galaxies (ELGs) to measure the baryonic acoustic oscillation (BAO) standard ruler at redshift 0.9. To test different ELG selection algorithms, 9000 spectra were observed with the SDSS spectrograph as a pilot survey based on data from several imaging surveys. First, using visual inspection and redshift quality flags, we show that the automated spectroscopic redshifts assigned by the pipeline meet the quality requirements for a reliable BAO measurement. We also show the correlations between sky emission, signal-to-noise ratio in the emission lines, and redshift error. Then we provide a detailed description of each target selection algorithm we tested and compare them with the requirements of the eBOSS experiment. As a result, we provide reliable redshift distributions for the different target selection schemes we tested. Finally, we determine an target selection algorithms that is best suited to be applied on DECam photometry because they fulfill the eBOSS survey efficiency requirements.
Key words: large-scale structure of Universe / galaxies: general / methods: observational
The catalog is only available at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/592/A121
© ESO, 2016
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