Near-Infrared Surveys for High-Redshift Quassars

高红移类星体的近红外巡天

• 批准号: 9900703
• 负责人: Donald Schneider
• 金额: $ 30.11万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-09-01 至 2004-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9900703&HistoricalAwards=false
• 关键词: Near; Infrared; Surveys; Redshift; Quassars

AST-9900703Near infrared surveys for high redshift quasarsDonald P. SchneiderOver the last decade the NSF has funded a series of surveys, carried out using a large format CCD camera on the Palomar 5-m telescope. These surveys have investigated quasar populations at a redshift of about four. The highest redshift quasars are interesting; they place the strongest constraints on formation mechanisms of these objects and reveal the nature of the intergalactic medium at ever earlier times. In this study, Dr. Schneider is extending these studies out to redshifts of up to six. The investigations consist of the following datasets: (1) two Palomar CCD surveys; a four filter survey and a slitless survey. (2)the Sloan Digital Sky Survey; and (3) optical identifications in two deep x-ray surveys form Roentgen Satellite and the Chandra advanced x-ray facility.****

AST-9900703 NEAR红外调查对高红移Quassdonald P. Schneiderover持续十年，NSF资助了一系列调查，并在Palomar 5-m望远镜上使用大格式的CCD摄像头进行了一系列调查。 这些调查已调查了大约四个的红移。 最高的红移类星体很有趣。他们对这些物体的形成机制施加了最强的限制，并在早期揭示了银河系培养基的性质。 在这项研究中，施耐德博士将这些研究扩展到最多六个的红移。 调查由以下数据集组成：（1）两项Palomar CCD调查；四个过滤器调查和一个无狭窄的调查。 （2）斯隆数字天空调查； （3）两个深X射线调查中的光学识别形式形式Roentgen卫星和Chandra Advanced X射线设施。****