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arXiv 1504.03039astro-ph.GAastro-ph.CO
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用于暗能量调查的OzDES多光纤光谱学:第一年的运行和结果

OzDES multi-fibre spectroscopy for the Dark Energy Survey: first-year operation and results

Fang Yuan, C. Lidman, T. M. Davis, M. Childress, F. B. Abdalla, M. Banerji, E. Buckley-Geer, A. Carnero Rosell, D. Carollo, F. J. Castander, C. B. D'Andrea, H. … 展开作者

Fang Yuan, C. Lidman, T. M. Davis, M. Childress, F. B. Abdalla, M. Banerji, E. Buckley-Geer, A. Carnero Rosell, D. Carollo, F. J. Castander, C. B. D'Andrea, H. T. Diehl, C. E Cunha, R. J. Foley, J. Frieman, K. Glazebrook, J. Gschwend, S. Hinton, S. Jouvel, R. Kessler, A. G. Kim, A. L. King, K. Kuehn, S. Kuhlmann, G. F. Lewis, H. Lin, P. Martini, R. G. McMahon, J. Mould, R. C. Nichol, R. P. Norris, C. R. O'Neill, F. Ostrovski, A. Papadopoulos, D. Parkinson, S. Reed, A. K. Romer, P. J. Rooney, E. Rozo, E. S. Rykoff, M. Sako, R. Scalzo, B. P. Schmidt, D. Scolnic, N. Seymour, R. Sharp, F. Sobreira, M. Sullivan, R. C. Thomas, D. Tucker, S. A. Uddin, R. H. Wechsler, W. Wester, H. Wilcox, B. Zhang, T. Abbott, S. Allam, A. H. Bauer, A. Benoit-Levy, E. Bertin, D. Brooks, D. L. Burke, M. Carrasco Kind, R. Covarrubias, M. Crocce, L. N. da Costa, D. L. DePoy, S. Desai, P. Doel, T. F. Eifler, A. E. Evrard, A. Fausti Neto, B. Flaugher, P. Fosalba, E. Gaztanaga, D. Gerdes, D. Gruen, R. A. Gruendl, K. Honscheid, D. James, N. Kuropatkin, O. Lahav, T. S. Li, M. A. G. Maia, M. Makler, J. Marshall, C. J. Miller, R. Miquel, R. Ogando, A. A. Plazas, A. Roodman, E. Sanchez, V. Scarpine, M. Schubnell, I. Sevilla-Noarbe, R. C. Smith, M. Soares-Santos, E. Suchyta, M. E. C. Swanson, G. Tarle, J. Thaler, A. R. Walker

摘要:

OzDES是一项为期五年、共100个夜晚的光谱巡天计划,主要目的是测量约2,500个Ia型超新星宿主星系的红移,红移范围为0.1 < z < 1.2,并推导出约500个活动星系核和类星体的反射映射黑洞质量,红移范围为0.3 < z < 4.5。这个数据宝库形成了暗能量巡天的光谱后续工作的主要部分,我们还针对星系团,射电星系,强透镜和未识别的瞬变,以及测量发光的红色星系和发射线星系,以帮助校准光度红移。在这里,我们提出了一个概述OzDES计划和我们的第一年的结果。在2012年12月至2013年12月期间,我们观察了超过10,000个物体,并测量了超过6,000个红移。我们的策略重新瞄准在许多观测运行微弱的对象,使我们能够测量星系的红移为M_r=25 MAG.We概述了我们的目标选择和观测策略,量化红移的成功率为不同类型的目标,并讨论了我们的主要科学目标的影响。最后,我们强调了一些有趣的对象作为偶然的例子,但不是完全出乎意料的发现,可以从这样一个大的光谱调查。

英文摘要:

OzDES is a five-year, 100-night, spectroscopic survey on the Anglo-Australian Telescope, whose primary aim is to measure redshifts of approximately 2,500 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 program and our first-year results. Between Dec 2012 and Dec 2013, 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. Finally, 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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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