DECam Survey for Benchmark 15 Myr-old Substellar Objects in the Nearest OB Association

这将支持在智利Cerro Tololo的Blanco 4-m望远镜上使用暗能量相机(DECAM)和即将投入使用的Triplespec4光谱仪的工作，以获取最近的OB恒星形成区域Sco-Cen中相对年轻的星下天体的图像、天体测量和光谱。这些观测将被用来约束L和其他棕矮星的大气模型，并确定在这些恒星下天体的1500万年内，有多少恒星下天体具有原行星吸积盘？队形。S项目的主要目标是极大地提高我们对年轻棕矮星的性质的了解，帮助限制它们的起源，并通过观测限制棕矮星周围行星形成的前景。广泛的影响包括将研究引入本科生STEM相关课程，发布新闻稿，以及培训本科生进行研究。

This will support work using the Dark Energy Camera (DECam) and soon-to-be commissioned TripleSpec4 spectrograph on the Blanco 4-m telescope at Cerro Tololo in Chile to obtain images, astrometry and spectra of relatively young substellar objects in the nearest OB star-forming region, Sco-Cen. The observations will be used to constrain atmospheric models of L- and other brown dwarfs, and to determine what fraction of substellar objects have protoplanetary accretion disks within 15 million years of the substellar objects? formation. The project?s main goals are to greatly improve our knowledge of the properties of young brown dwarfs, help constrain their origins, and observationally constrain the prospects for planet formation around brown dwarfs via their disk lifetimes.Broader impacts include bringing research into undergraduate STEM-related classes, press-releases, and training undergraduate students in research.