Collaborative Research: "The Physical Properties of Lyman Alpha Emitters at 2<z<3"

合作研究：“莱曼阿尔法发射体在 2 时的物理特性

• 批准号: 0807885
• 负责人: Caryl Gronwall
• 金额: $ 25.64万
• 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: 2008
• 资助国家: 美国
• 起止时间: 2008-07-15 至 2012-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0807885&HistoricalAwards=false
• 关键词: Collaborative; Research; Physical; Properties; Lyman

The awardees have performed a deep ground-based narrow-band survey for Lyman-alpha emitters (LAEs, possible progenitors of ordinary galaxies like the Milky Way) that has produced a sample of 259 galaxies, one of the largest sample of LAEs yet acquired. The funded work will extend the survey by 1) exploring the evolution of LAEs by studying a complementary sample at lower redshift; 2) measuring the 3-D distribution of the LAEs; 3) probing the stellar winds, dynamics, and HI column densities of LAEs via extensive high-resolution spectroscopy with the Robert Stobie Spectrograph on the South African Large Telescope (SALT) and the LDSS3 spectrograph on Magellan, and 4) performing near-infrared spectroscopy with FLAMINGOS-2 on Gemini-South to measure systemic redshifts and LAE metallicities. The research promises significant progress towards a complete picture of the birth and early growth of the precursors of present-day L* galaxies.Broader impacts of this work include research training for undergraduates, release of data to the astronomical community, and participation in the "Astrofest" activity of public lectures at Penn State.

获奖者对Lyman-Alpha发射器（Laes，可能的诸如银河系之类的普通星系可能的祖细胞）进行了深层地面窄带调查，该调查生产了259个星系样本，这是Laes尚未获得的最大样本之一。资助的工作将通过1）通过研究较低的红移来探索LAE的演变来扩展调查； 2）测量LAE的3-D分布； 3）通过广泛的高分辨率光谱探测LAES的恒星风，动力学和HI色谱柱密度，其中Robert Stobie光谱仪在南非大型望远镜（盐）上（盐）和LDSS3光谱仪在麦哲伦上的LDSS3光谱仪，以及4个表现的近红外光谱，并在flamingos-2上进行了systerics and pearnie-syment systals and systals and systals systals systals systals systals systal systal salls sallsic systals systal sall sall salls syst insic redshift。这项研究有望取得重大进展，以全面了解当今L* Galaxies的前体的出生和早期成长。这项工作的影响包括针对本科生的研究培训，向天文学群落发布数据以及参与宾夕法尼亚州公共讲座的“ Astrofofest”活动。