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

DECam 对最近 OB 协会中 15 MYR 古老的亚恒星天体的基准巡天

• 批准号: 1313029
• 负责人: Eric Mamajek
• 金额: $ 27.69万
• 依托单位: University of Rochester
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-09-01 至 2016-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1313029&HistoricalAwards=false
• 关键词: DECam; Survey; Benchmark; 15; Myr

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.

这将支持使用暗能量相机（DECam）和即将投入使用的位于智利Cerro Tololo的Blanco 4米望远镜上的TripleSpec4光谱仪的工作，以获得最近的OB恒星形成区域scoc - centn中相对年轻的恒星物体的图像，天体测量和光谱。这些观测结果将用于约束L-和其他褐矮星的大气模型，并确定在距离恒星1500万年的范围内，有多少次恒星物体具有原行星吸积盘？形成。这个项目吗?S的主要目标是大大提高我们对年轻褐矮星特性的认识，帮助限制它们的起源，并通过褐矮星的磁盘寿命来观测褐矮星周围行星形成的前景。更广泛的影响包括将研究纳入本科stem相关课程、新闻稿以及培养本科生的研究能力。