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Title: OzDES multifibre spectroscopy for the Dark Energy Survey: First-year operation and results

Abstract

The Australian Dark Energy Survey (OzDES) is a five-year, 100-night, spectroscopic survey on the Anglo-Australian Telescope, whose primary aim is to measure redshifts of approximately 2500 Type Ia supernovae host galaxies over the redshift range 0.1 < z < 1.2, and derive reverberation-mapped black hole masses for approximately 500 active galactic nuclei and quasars over 0.3 < z < 4.5. This treasure trove of data forms a major part of the spectroscopic follow-up for the Dark Energy Survey for which we are also targeting cluster galaxies, radio galaxies, strong lenses, and unidentified transients, as well as measuring luminous red galaxies and emission line galaxies to help calibrate photometric redshifts. Here, we present an overview of the OzDES programme and our first-year results. Between 2012 December and 2013 December, we observed over 10 000 objects and measured more than 6 000 redshifts. Our strategy of retargeting faint objects across many observing runs has allowed us to measure redshifts for galaxies as faint as mr = 25 mag. We outline our target selection and observing strategy, quantify the redshift success rate for different types of targets, and discuss the implications for our main science goals. In conclusion, we highlight a few interestingmore » objects as examples of the fortuitous yet not totally unexpected discoveries that can come from such a large spectroscopic survey.« less

Authors:
 [1]
  1. The Australian National Univ., ACT (Australia); ARC Centre of Excellence for All-sky Astrophysics (CAAS-TRO) (Australia). et al.
Publication Date:
Research Org.:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Org.:
DES
OSTI Identifier:
1212747
Alternate Identifier(s):
OSTI ID: 1226059
Report Number(s):
FERMILAB-PUB-15-138-AE; BNL-108513-2015-JA
Journal ID: ISSN 0035-8711; arXiv eprint number arXiv:1504.03039
Grant/Contract Number:  
AC02-07CH11359; SC00112704
Resource Type:
Accepted Manuscript
Journal Name:
Monthly Notices of the Royal Astronomical Society
Additional Journal Information:
Journal Volume: 452; Journal Issue: 3; Journal ID: ISSN 0035-8711
Publisher:
Royal Astronomical Society
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; techniques: spectroscopic; surveys; supernovae: general; galaxies: active; cosmology: observations

Citation Formats

Yuan, Fang. OzDES multifibre spectroscopy for the Dark Energy Survey: First-year operation and results. United States: N. p., 2015. Web. doi:10.1093/mnras/stv1507.
Yuan, Fang. OzDES multifibre spectroscopy for the Dark Energy Survey: First-year operation and results. United States. https://doi.org/10.1093/mnras/stv1507
Yuan, Fang. Wed . "OzDES multifibre spectroscopy for the Dark Energy Survey: First-year operation and results". United States. https://doi.org/10.1093/mnras/stv1507. https://www.osti.gov/servlets/purl/1212747.
@article{osti_1212747,
title = {OzDES multifibre spectroscopy for the Dark Energy Survey: First-year operation and results},
author = {Yuan, Fang},
abstractNote = {The Australian Dark Energy Survey (OzDES) is a five-year, 100-night, spectroscopic survey on the Anglo-Australian Telescope, whose primary aim is to measure redshifts of approximately 2500 Type Ia supernovae host galaxies over the redshift range 0.1 < z < 1.2, and derive reverberation-mapped black hole masses for approximately 500 active galactic nuclei and quasars over 0.3 < z < 4.5. This treasure trove of data forms a major part of the spectroscopic follow-up for the Dark Energy Survey for which we are also targeting cluster galaxies, radio galaxies, strong lenses, and unidentified transients, as well as measuring luminous red galaxies and emission line galaxies to help calibrate photometric redshifts. Here, we present an overview of the OzDES programme and our first-year results. Between 2012 December and 2013 December, we observed over 10 000 objects and measured more than 6 000 redshifts. Our strategy of retargeting faint objects across many observing runs has allowed us to measure redshifts for galaxies as faint as mr = 25 mag. We outline our target selection and observing strategy, quantify the redshift success rate for different types of targets, and discuss the implications for our main science goals. In conclusion, we highlight a few interesting objects as examples of the fortuitous yet not totally unexpected discoveries that can come from such a large spectroscopic survey.},
doi = {10.1093/mnras/stv1507},
journal = {Monthly Notices of the Royal Astronomical Society},
number = 3,
volume = 452,
place = {United States},
year = {Wed Jul 29 00:00:00 EDT 2015},
month = {Wed Jul 29 00:00:00 EDT 2015}
}

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