OzDES multifibre spectroscopy for the Dark Energy Survey: 3-yr results and first data release
文献类型:期刊论文
作者 | Childress, M. J.1; Lidman, C.2,3; Davis, T. M.3,4; Tucker, B. E.3,5; Asorey, J.3,4; Yuan, F.3,5; Abbott, T. M. C.6; Abdalla, F. B.7,8; Allam, S.9; Annis, J.9 |
刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY |
出版日期 | 2017-11-01 |
卷号 | 472期号:1页码:273-288 |
ISSN号 | 0035-8711 |
关键词 | supernovae: general dark energy |
DOI | 10.1093/mnras/stx1872 |
英文摘要 | We present results for the first three years of OzDES, a six year programme to obtain redshifts for objects in the Dark Energy Survey (DES) supernova fields using the 2dF fibre positioner and AAOmega spectrograph on the Anglo-Australian Telescope. OzDES is a multi-object spectroscopic survey targeting multiple types of targets at multiple epochs over a multiyear baseline and is one of the first multi-object spectroscopic surveys to dynamically include transients into the target list soon after their discovery. At the end of three years, OzDES has spectroscopically confirmed almost 100 supernovae, and has measured redshifts for 17 000 objects, including the redshifts of 2566 supernova hosts. We examine how our ability to measure redshifts for targets of various types depends on signal-to-noise ratio (S/N), magnitude and exposure time, finding that our redshift success rate increases significantly at a S/N of 2-3 per 1-angstrom bin. We also find that the change in S/N with exposure time closely matches the Poisson limit for stacked exposures as long as 10 h. We use these results to predict the redshift yield of the full OzDES survey, as well as the potential yields of future surveys on other facilities such as (i.e. the 4-m Multi-Object Spectroscopic Telescope, the Subaru Prime Focus Spectrograph and the Maunakea Spectroscopic Explorer). This work marks the first OzDES data release, comprising 14 693 redshifts. OzDES is on target to obtain over 30 000 redshifts over the 6-yr duration of the survey, including a yield of approximately 5700 supernova host-galaxy redshifts. |
WOS关键词 | SCIENCE VERIFICATION DATA ; DIGITAL SKY SURVEY ; SUPERNOVA FIELDS ; SURVEY DESIGN ; GALAXIES ; TELESCOPE ; IDENTIFICATION ; PROJECT ; MASSES ; QUASAR |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | OXFORD UNIV PRESS |
WOS记录号 | WOS:000413765800023 |
源URL | [http://libir.pmo.ac.cn/handle/332002/22553] |
专题 | 中国科学院紫金山天文台 |
通讯作者 | Childress, M. J. |
作者单位 | 1.Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, England 2.Australian Astron Observ, 105 Delhi Rd, N Ryde, NSW 2113, Australia 3.Australian Natl Univ, ARC Ctr Excellence All Sky Astrophys CAASTRO, Canberra, ACT 2611, Australia 4.Univ Queensland, Sch Math & Phys, Brisbane, Qld 4072, Australia 5.Australian Natl Univ, Res Sch Astron & Astrophys, Canberra, ACT 2601, Australia 6.Natl Opt Astron Observ, Cerro Tololo Interamer Observ, Casilla 603, La Serena, Chile 7.UCL, Dept Phys & Astron, Gower St, London WC1E 6BT, England 8.Rhodes Univ, Dept Phys & Elect, POB 94, ZA-6140 Grahamstown, South Africa 9.Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA 10.Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England |
推荐引用方式 GB/T 7714 | Childress, M. J.,Lidman, C.,Davis, T. M.,et al. OzDES multifibre spectroscopy for the Dark Energy Survey: 3-yr results and first data release[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,472(1):273-288. |
APA | Childress, M. J..,Lidman, C..,Davis, T. M..,Tucker, B. E..,Asorey, J..,...&Zhang, B. R..(2017).OzDES multifibre spectroscopy for the Dark Energy Survey: 3-yr results and first data release.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,472(1),273-288. |
MLA | Childress, M. J.,et al."OzDES multifibre spectroscopy for the Dark Energy Survey: 3-yr results and first data release".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 472.1(2017):273-288. |
入库方式: OAI收割
来源:紫金山天文台
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