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

Yuan, Fang

doi:10.1093/mnras/stv1507

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

Journal Article · Wed Jul 29 00:00:00 EDT 2015 · Monthly Notices of the Royal Astronomical Society

DOI:https://doi.org/10.1093/mnras/stv1507· OSTI ID:1212747

Yuan, Fang ^[1]

The Australian National Univ., ACT (Australia); ARC Centre of Excellence for All-sky Astrophysics (CAAS-TRO) (Australia). et al.

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 m_r = 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.

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Research Organization:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Contributing Organization:: DES

Grant/Contract Number:: AC02-07CH11359; SC00112704

OSTI ID:: 1212747

Alternate ID(s):: OSTI ID: 1226059

Report Number(s):: FERMILAB-PUB-15-138-AE; BNL-108513-2015-JA; arXiv eprint number arXiv:1504.03039

Journal Information:: Monthly Notices of the Royal Astronomical Society, Vol. 452, Issue 3; ISSN 0035-8711

Publisher:: Royal Astronomical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 81 works

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