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arXiv 1812.00514astro-ph.IMastro-ph.GA
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LSST观测战略白皮书:LSST对WFIRST深场的观测

LSST Observing Strategy White Paper: LSST Observations of WFIRST Deep Fields

R. J. Foley, A. M. Koekemoer, D. N. Spergel, F. B. Bianco, P. Capak, L. Dai, O. Dore, G. G. Fazio, H. Ferguson, A. V. Filippenko, B. Frye, L. Galbany, E. Gawise… 展开作者

R. J. Foley, A. M. Koekemoer, D. N. Spergel, F. B. Bianco, P. Capak, L. Dai, O. Dore, G. G. Fazio, H. Ferguson, A. V. Filippenko, B. Frye, L. Galbany, E. Gawiser, C. Gronwall, N. P. Hathi, C. Hirata, R. Hounsell, S. W. Jha, A. G. Kim, P. L. Kelly, J. W. Kruk, S. Malhotra, K. S. Mandel, R. Margutti, D. Marrone, K. B. W. McQuinn, P. Melchior, L. Moustakas, J. A. Newman, J. E. G. Peek, S. Perlmutter, J. D. Rhodes, B. Robertson, D. Rubin, D. Scolnic, R. Somerville, R. Street, Y. Wang, D. J. Whalen, R. A. Windhorst, E. J. Wollack

摘要:

宽视场红外巡天望远镜(WFIRST)预计将于2020年代中期发射。凭借其宽视场近红外(NIR)相机,它将以前所未有的细节调查天空。作为正常操作的一部分,并作为多个预期的专门调查的结果,WFIRST将产生几个相对宽场(几十平方度)深(限制28级或更暗)的领域。特别是,一项计划中的超新星调查预计将在2年内大约每5天对LSST足迹中的3个深场进行成像。叠加所有数据,这次巡天将在LSST足迹中的所有WFIRST超新星场上分别产生~12-25 deg^2和~5-15 deg^2区域,深度分别为~28 mag和~29 mag。我们建议LSST进行小型调查,将匹配WFIRST的节奏,并同时观察超新星调查领域在2年的WFIRST超新星调查,实现堆叠深度类似的WFIRST数据。我们还建议在整个LSST调查中对这些相同区域进行额外的观测,以便更早地获得深层图像,在现场进行长期监测,并产生更深的整体图像。这些领域将为宇宙学、河外星系和瞬变/变量科学提供遗产。

英文摘要:

The Wide-Field Infrared Survey Telescope (WFIRST) is expected to launch in the mid-2020s. With its wide-field near-infrared (NIR) camera, it will survey the sky to unprecedented detail. As part of normal operations and as the result of multiple expected dedicated surveys, WFIRST will produce several relatively wide-field (tens of square degrees) deep (limiting magnitude of 28 or fainter) fields. In particular, a planned supernova survey is expected to image 3 deep fields in the LSST footprint roughly every 5 days over 2 years. Stacking all data, this survey will produce, over all WFIRST supernova fields in the LSST footprint, ~12-25 deg^2 and ~5-15 deg^2 regions to depths of ~28 mag and ~29 mag, respectively. We suggest LSST undertake mini-surveys that will match the WFIRST cadence and simultaneously observe the supernova survey fields during the 2-year WFIRST supernova survey, achieving a stacked depth similar to that of the WFIRST data. We also suggest additional observations of these same regions throughout the LSST survey to get deep images earlier, have long-term monitoring in the fields, and produce deeper images overall. These fields will provide a legacy for cosmology, extragalactic, and transient/variable science.

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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