The First Brown Dwarf Discovered by the Backyard Worlds: Planet 9 Citizen Science Project
The First Brown Dwarf Discovered by the Backyard Worlds: Planet 9 Citizen Science Project
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DOI：
10.3847/2041-8213/aa7200
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发表时间：
2017-06-01
影响因子：
7.9
通讯作者：
Stajic, Tamara
中科院分区：
文献类型：
--
作者：
Kuchner, Marc J.;Faherty, Jacqueline K.;Stajic, Tamara
广域红外巡天探测器（WISE）是寻找附近褐矮星和外太阳系新行星的强大工具，特别是结合了NEOWISE和NEOWISE-Reactivation数据。然而，到目前为止，在WISE数据中搜索棕矮星还没有充分利用WISE图像的全部深度。为了通过视觉检查有效地搜索这个未探索的空间，我们启动了一个新的公民科学项目，名为“后院世界：行星9”，该项目要求志愿者检查由时间分辨WISE coadd构建的差异图像组成的短动画。我们报道了这个项目发现的第一个新的亚恒星天体WISEA J110125.95+540052.8，一颗T5.5的褐矮星，距离太阳约34 pc，总自行量约为0“.7 yr（-1）。WISEA J110125.95+540052.8的WISE W2星等为W2 = 15.37。0.09;我们对这个源的灵敏度证明了公民科学家通过视觉检查识别比W2单次曝光灵敏度暗0.9等的移动物体的能力，该阈值限制了WISE先前基于运动的褐矮星搜索。
The Wide-field Infrared Survey Explorer (WISE) is a powerful tool for finding nearby brown dwarfs and searching for new planets in the outer solar system, especially with the incorporation of NEOWISE and NEOWISE-Reactivation data. However, so far, searches for brown dwarfs in WISE data have yet to take advantage of the full depth of the WISE images. To efficiently search this unexplored space via visual inspection, we have launched a new citizen science project, called "Backyard Worlds: Planet 9," which asks volunteers to examine short animations composed of difference images constructed from time-resolved WISE coadds. We report the first new substellar object discovered by this project, WISEA J110125.95+540052.8, a T5.5 brown dwarf located approximately 34 pc from the Sun with a total proper motion of similar to 0 ''.7 yr(-1). WISEA J110125.95+540052.8 has a WISE W2 magnitude of W2 = 15.37. 0.09; our sensitivity to this source demonstrates the ability of citizen scientists to identify moving objects via visual inspection that are 0.9 mag fainter than the W2 single-exposure sensitivity, a threshold that has limited prior motion-based brown dwarf searches with WISE.