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Title: Deep ugrizY imaging and DEEP2/3 spectroscopy: a photometric redshift testbed for LSST and public release of data from the DEEP3 Galaxy Redshift Survey

Journal Article · · Monthly Notices of the Royal Astronomical Society
ORCiD logo [1]; ORCiD logo [2];  [1];  [3]; ORCiD logo [4];  [5];  [6]; ORCiD logo [7];  [8];  [9];  [3];  [8];  [10];  [8];  [11];  [8];  [12];  [13];  [14];  [15] more »;  [16];  [17] « less
  1. Department of Physics and Astronomy, University of Pittsburgh, 3941 O’Hara Street, Pittsburgh, PA 15260, USA, Pittsburgh Particle Physics, Astrophysics, and Cosmology Center (PITT PACC), Pittsburgh, PA 15260, USA
  2. Center for Cosmology, Department of Physics and Astronomy, University of California, 4129 Reines Hall, Irvine, CA 92697, USA
  3. Center for Astrophysics | Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
  4. Department of Physics and Astronomy, University of Leicester, University Road, Leicester LE2 3RJ, UK
  5. Centre for Astronomy and Particle Theory, University of Nottingham, Nottingham NG7 2RD, UK
  6. Department of Astronomy, University of California, Berkeley, CA 94720, USA, Department of Physics, University of California, Berkeley, CA 94720, USA
  7. New York University Abu Dhabi, PO Box 129188, Abu Dhabi, United Arab Emirates
  8. UCO/Lick Observatory and Department of Astronomy and Astrophysics, University of California, Santa Cruz, 1156 High Street, Santa Cruz, CA 95064, USA
  9. Astronomy Department, Orange Coast College, Costa Mesa, CA 92626, USA
  10. Department of Physics and Astronomy, Colby College, Waterville, ME 04961, USA
  11. Max-Planck-Institut für Extraterrestrische Physik, Giessenbachstraße, D-85748 Garching, Germany
  12. Centre for Extragalactic Astronomy, Department of Physics, Durham University, Durham DH1 3LE, UK
  13. Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, CA 94720, USA
  14. Department of Physics, University of Connecticut, 2152 Hillside Road, Unit 3046, Storrs, CT 06269, USA
  15. MMT/Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721, USA
  16. Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721, USA
  17. Department of Physics and Astronomy, University of Kentucky, 505 Rose Street, Lexington, KY 40506-0055, USA
+ Show Author Affiliations

ABSTRACT We present catalogues of calibrated photometry and spectroscopic redshifts in the Extended Groth Strip, intended for studies of photometric redshifts (photo-z’s). The data includes ugriz photometry from Canada–France–Hawaii Telescope Legacy Survey (CFHTLS) and Y-band photometry from the Subaru Suprime camera, as well as spectroscopic redshifts from the DEEP2, DEEP3, and 3D-HST surveys. These catalogues incorporate corrections to produce effectively matched-aperture photometry across all bands, based upon object size information available in the catalogue and Moffat profile point spread function fits. We test this catalogue with a simple machine learning-based photometric redshift algorithm based upon Random Forest regression, and find that the corrected aperture photometry leads to significant improvement in photo-z accuracy compared to the original SExtractor catalogues from CFHTLS and Subaru. The deep ugrizY photometry and spectroscopic redshifts are well suited for empirical tests of photometric redshift algorithms for LSST. The resulting catalogues are publicly available at http://d-scholarship.pitt.edu/36064/. We include a basic summary of the strategy of the DEEP3 Galaxy Redshift Survey to accompany the recent public release of DEEP3 data.

Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Contributing Organization:
CFHTLS Collaboration
Grant/Contract Number:
SC0007914; AC02-05CH11231
OSTI ID:
1556190
Alternate ID(s):
OSTI ID: 1580850
Journal Information:
Monthly Notices of the Royal Astronomical Society, Journal Name: Monthly Notices of the Royal Astronomical Society Vol. 488 Journal Issue: 4; ISSN 0035-8711
Publisher:
Oxford University PressCopyright Statement
Country of Publication:
United Kingdom
Language:
English
Citation Metrics:
Cited by: 7 works
Citation information provided by
Web of Science

References (25)

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Figures / Tables (16)

Figure 1(p. 4)figure Figure 1
Table 1(p. 5)table Table 1
Figure 2(p. 7)figure Figure 2
Table 2(p. 7)table Table 2
Figure 3(p. 8)figure Figure 3
Table 3(p. 8)table Table 3
Table 4(p. 9)table Table 4
Table 5(p. 9)table Table 5
Figure 4(p. 10)figure Figure 4
Table 6(p. 11)table Table 6
Figure 5(p. 12)figure Figure 5
Figure 6(p. 12)figure Figure 6
Figure A1(p. 14)figure Figure A1
Table A1(p. 16)table Table A1
Figure C1(p. 19)figure Figure C1
Figure C2(p. 20)figure Figure C2

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