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arXiv 1509.05045astro-ph.COastro-ph.GA
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SDSS-IV eBOSS发射线星系试点巡天

SDSS-IV eBOSS emission-line galaxy pilot survey

J. Comparat, T. Delubac, S. Jouvel, A. Raichoor, J-P. Kneib, C. Yeche, F. B. Abdalla, C. Le Cras, C. Maraston, D. M. Wilkinson, G. Zhu, E. Jullo, F. Prada, D. S… 展开作者

J. Comparat, T. Delubac, S. Jouvel, A. Raichoor, J-P. Kneib, C. Yeche, F. B. Abdalla, C. Le Cras, C. Maraston, D. M. Wilkinson, G. Zhu, E. Jullo, F. Prada, D. Schlegel, Z. Xu, H. Zou, J. Bautista, D. Bizyaev, A. Bolton, J. R. Brownstein, K. S. Dawson, S. Escoffier P. Gaulme, K. Kinemuchi, E. Malanushenko, V. Malanushenko, V. Mariappan, J. A. Newman, D. Oravetz, K. Pan, W. J. Percival, A. Prakash, D. P. Schneider, A. Simmons, T. M. C. Abbott S. Allam, M. Banerji, A. Benoit-Lévy, E. Bertin, D. Brooks, D. Capozzi, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, F. J. Castander, C. E. Cunha, L. N. da Costa, S. Desai, P. Doel, T. F. Eifler, J. Estrada, B. Flaugher, P. Fosalba, J. Frieman, E. Gaztanaga, D. W. Gerdes, D. Gruen, R. A. Gruendl, G. Gutierrez, K. Honscheid, D. J. James, K. Kuehn, N. Kuropatkin, O. Lahav, M. Lima, M. A. G. Maia, M. March, J. L. Marshall, R. Miquel, A. A. Plazas, K. Reil, N. Roe, A. K. Romer, A. Roodman, E. S. Rykoff, M. Sako, E. Sanchez, V. Scarpine, I. Sevilla-Noarbe, M. Soares-Santos, F. Sobreira, E. Suchyta, M. E. C. Swanson, G. Tarle, J. Thaler, D. Thomas, A. R. Walker, Y. Zhang

摘要:

斯隆数字巡天IV扩展重子振荡光谱巡天(SDSS-IV/eBOSS)将观测195,000个发射线星系(ELG),以测量红移0.9的重子声学振荡标准尺(BAO)。为了测试不同的ELG选择算法,使用SDSS摄谱仪观察了9,000个光谱,作为基于几次成像调查数据的试点调查。首先,使用目视检查和红移质量标志,我们表明,由管道分配的自动光谱红移满足可靠的BAO测量的质量要求。我们还显示了天空发射,发射线的信噪比和红移误差之间的相关性。然后,我们提供了我们测试的每个目标选择算法的详细描述,并将它们与eBOSS实验的要求进行比较。因此,我们提供了可靠的红移分布不同的目标选择方案,我们测试。最后,我们确定了一个目标选择算法,最适合应用于DECam测光,因为他们满足eBOSS调查效率的要求。

英文摘要:

The Sloan Digital Sky Survey IV extended Baryonic Oscillation Spectroscopic Survey (SDSS-IV/eBOSS) will observe 195,000 emission-line galaxies (ELGs) to measure the Baryonic Acoustic Oscillation standard ruler (BAO) at redshift 0.9. To test different ELG selection algorithms, 9,000 spectra were observed with the SDSS spectrograph as a pilot survey based on data from several imaging surveys. First, using visual inspection and redshift quality flags, we show that the automated spectroscopic redshifts assigned by the pipeline meet the quality requirements for a reliable BAO measurement. We also show the correlations between sky emission, signal-to-noise ratio in the emission lines, and redshift error. Then we provide a detailed description of each target selection algorithm we tested and compare them with the requirements of the eBOSS experiment. As a result, we provide reliable redshift distributions for the different target selection schemes we tested. Finally, we determine an target selection algorithms that is best suited to be applied on DECam photometry because they fulfill the eBOSS survey efficiency requirements.

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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