黑暗能源调查3年结果：使用boss/eBoss的聚类红移对镜头样品红移分布的校准

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黑暗能源调查3年结果：使用boss/eBoss的聚类红移对镜头样品红移分布的校准

Dark Energy Survey Year 3 Results: Calibration of Lens Sample Redshift Distributions using Clustering Redshifts with BOSS/eBOSS

论文作者

Cawthon, R., Elvin-Poole, J., Porredon, A., Crocce, M., Giannini, G., Gatti, M., Ross, A. J., Rykoff, E. S., Rosell, A. Carnero, DeRose, J., Lee, S., Rodriguez-Monroy, M., Amon, A., Bechtol, K., De Vicente, J., Gruen, D., Morgan, R., Sanchez, E., Sanchez, J., Sevilla-Noarbe, I., Abbott, T. M. C., Aguena, M., Allam, S., Annis, J., Avila, S., Bacon, D., Bertin, E., Brooks, D., Burke, D. L., Kind, M. Carrasco, Carretero, J., Castander, F. J., Choi, A., Costanzi, M., da Costa, L. N., Pereira, M. E. S., Dawson, K., Desai, S., Diehl, H. T., Eckert, K., Everett, S., Ferrero, I., Fosalba, P., Frieman, J., García-Bellido, J., Gaztanaga, E., Gruendl, R. A., Gschwend, J., Gutierrez, G., Hinton, S. R., Hollowood, D. L., Honscheid, K., Huterer, D., James, D. J., Kim, A. G., Kneib, J. -P., Kuehn, K., Kuropatkin, N., Lahav, O., Lima, M., Lin, H., Maia, M. A. G., Melchior, P., Menanteau, F., Miquel, R., Mohr, J. J., Muir, J., Myles, J., Palmese, A., Pandey, S., Paz-Chinchón, F., Percival, W. J., Plazas, A. A., Roodman, A., Rossi, G., Scarpine, V., Serrano, S., Smith, M., Soares-Santos, M., Suchyta, E., Swanson, M. E. C., Tarle, G., To, C., Troxel, M. A., Wilkinson, R. D., Collaboration, the DES

论文摘要

我们提出了用于黑暗能源调查（DES）透镜样品星系的聚类红移测量值，用于用于弱重力透镜和星系聚类研究。为了进行此测量，我们与Baryon声学振荡调查（BOSS）及其扩展Eboss的光谱星系交叉相交。我们在模拟中验证了我们的方法，包括由于银河系聚类偏置而校准系统错误的新技术，发现我们的方法通常在校准平均红移时毫无偏见。我们将我们的方法应用于数据，并估算11种不同光学化式式垃圾箱的红移分布。我们发现，聚类红移和光度红移估计值之间的一般一致性，在大多数垃圾箱中，推断的平均红移差异差异低于$ |Δz| = 0.01 $。我们还测试了一种用于校准红移分布的宽度参数的方法，我们发现我们有必要用于某些样品。我们对平均红移的典型不确定性范围为0.003至0.008，而宽度的不确定性范围为4至9 \％。我们讨论这些结果如何校准Companion DES第3年结果论文中使用的光度红移分布。

We present clustering redshift measurements for Dark Energy Survey (DES) lens sample galaxies to be used in weak gravitational lensing and galaxy clustering studies. To perform this measurement, we cross-correlate with spectroscopic galaxies from the Baryon Acoustic Oscillation Survey (BOSS) and its extension, eBOSS. We validate our methodology in simulations, including a new technique to calibrate systematic errors due to the galaxy clustering bias, finding our method to be generally unbiased in calibrating the mean redshift. We apply our method to the data, and estimate the redshift distribution for eleven different photometrically-selected bins. We find general agreement between clustering redshift and photometric redshift estimates, with differences on the inferred mean redshift to be below $|Δz|=0.01$ in most of the bins. We also test a method to calibrate a width parameter for redshift distributions, which we found necessary to use for some of our samples. Our typical uncertainties on the mean redshift ranged from 0.003 to 0.008, while our uncertainties on the width ranged from 4 to 9\%. We discuss how these results calibrate the photometric redshift distributions used in companion DES Year 3 Results papers.

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