The SDSS-IV extended Baryon oscillation spectroscopic survey: Quasar target selection
Author
Myers, A. D.; Palanque-Delabrouille, Nathalie; Prakash, A.; Pâris, I.; Yeche, C.; Dawson, K. S.; Bovy, J.; Lang, D.; Schlegel, D. J.; Newman, J. A.; Petitjean, P.; Kneib, J.; Laurent, P.; Percival, Will J.; Ross, A. J.; Seo, Hee-Jong; Tinker, J. L.; Armengaud, E.; Brownstein, J.; Burtin, E.; Cai, Z.; Comparat, J.; Kasliwal, M.; Kulkarni, S. R.; Laher, R.; Levitan, D.; McBride, C.; McGreer, I. D.; Miller, A. A.; Nugent, P.; Ofek, E.; Rossi, G.; Ruan, J.; Schneider, D. P.; Sesar, B.; Streblyanska, A.; Surace, J.Entity
UAM. Departamento de Física TeóricaPublisher
Institute of Physics PublishingDate
2015-12-01Citation
10.1088/0067-0049/221/2/27
The Astrophysical Journal 221.2 (2015): 27
ISSN
1538-4357 (online); 0067-0049 (print)DOI
10.1088/0067-0049/221/2/27Funded by
We are grateful for insightful discussions about quasar selection statistics with Joe Hennawi, David Hogg, and Gordon Richards. A.D.M. acknowledges a generous research fellowship from the Alexander von Humboldt Foundation at the MaxPlanck-Institut für Astronomie and was supported in part by NASA-ADAP awards NNX12AI49G and NNX12AE38G and by NSF awards 1211112 and 1515404. J.P.K. acknowledges support from the ERC advanced grant LIDA. This paper includes targets derived from the images of the Wide-Field Infrared Survey Explorer, which is a joint project of the University of California, Los Angeles, and the JetPropulsion Laboratory/California Institute of Technology, funded by the National Aeronautics and Space Administration. This paper represents an effort by both the SDSS-III and SDSS-IV collaborations. Funding for SDSS-III was provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, and the U.S. Department of Energy Office of Science. Funding for the Sloan Digital Sky Survey IV has been provided by the Alfred P. Sloan Foundation, the U.S. Department of Energy Office of Science, and the Participating Institutions. SDSS-IV acknowledges support and resources from the Center for HighPerformance Computing at the University of Utah. The SDSS web site is www.sdss.org.Editor's Version
http://dx.doi.org/10.1088/0067-0049/221/2/27Subjects
Catalogs; Cosmology: observations; Galaxies: distances and redshifts; Galaxies: photometry; Methods: data analysis; Quasars: general; FísicaNote
The Astrophysical Journal 221.2 (2015): 27 reproduced by permission of the AASRights
© 2015. The American Astronomical Society. All rights reservedAbstract
As part of the Sloan Digital Sky Survey (SDSS) IV the extended Baryon Oscillation Spectroscopic Survey (eBOSS) will improve measurements of the cosmological distance scale by applying the Baryon Acoustic Oscillation (BAO) method to quasar samples. eBOSS will adopt two approaches to target quasars over 7500 deg2. First, a "CORE" quasar sample will combine the optical selection in ugriz using a likelihood-based routine called XDQSOz, with a mid-IR-optical color cut. eBOSS CORE selection (to g < 22 or r < 22) should return ∼70 deg-2 quasars at redshifts 0.9 < z < 2.2 and ∼7 deg-2z > 2.1 quasars. Second, a selection based on variability in multi-epoch imaging from the Palomar Transient Factory should recover an additional ∼3-4 deg-2z > 2.1 quasars to g < 22.5. A linear model of how imaging systematics affect target density recovers the angular distribution of eBOSS CORE quasars over 96.7% (76.7%) of the SDSS north (south) Galactic Cap area. The eBOSS CORE quasar sample should thus be sufficiently dense and homogeneous over 0.9 < z < 2.2 to yield the first few-percent-level BAO constraint near eBOSS quasars at z > 2.1 will be used to improve BAO measurements in the Lyα Forest. Beyond its key cosmological goals, eBOSS should be the next-generation quasar survey, comprising >500,000 new quasars and >500,000 uniformly selected spectroscopically confirmed 0.9 < z < 2.2 quasars. At the conclusion of eBOSS, the SDSS will have provided unique spectra for more than 800,000 quasars
Files in this item
Google Scholar:Myers, A. D.
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Palanque-Delabrouille, Nathalie
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Prakash, A.
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Pâris, I.
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Yeche, C.
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Dawson, K. S.
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Bovy, J.
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Lang, D.
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Schlegel, D. J.
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Newman, J. A.
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Petitjean, P.
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Kneib, J.
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Laurent, P.
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Percival, Will J.
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Ross, A. J.
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Seo, Hee-Jong
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Tinker, J. L.
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Armengaud, E.
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Brownstein, J.
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Burtin, E.
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Cai, Z.
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Comparat, J.
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Kasliwal, M.
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Kulkarni, S. R.
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Laher, R.
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Levitan, D.
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McBride, C.
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McGreer, I. D.
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Miller, A. A.
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Nugent, P.
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Ofek, E.
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Rossi, G.
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Ruan, J.
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Schneider, D. P.
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Sesar, B.
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Streblyanska, A.
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Surace, J.
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