The Starburst-AGN Connection in Local, Infrared Radio Galaxies

本地红外射电星系中的星爆-活动星系核连接

• 批准号: 0206262
• 负责人: Aaron Evans
• 金额: $ 25.88万
• 依托单位: SUNY at Stony Brook
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-07-01 至 2006-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0206262&HistoricalAwards=false
• 关键词: Starburst; AGN; Connection; Local; Infrared

AST 0206262Evans, AaronAlmost all nearby massive galaxies are believed to have quiescent supermassive nuclear black holes. These dense, dark objects are remnants of prior, energetic events which undoubtedly gave rise to periods of active galactic nuclei (AGN) activity similar to what is observed in nearby radio galaxies and quasi-stellar objects (QSOs). Further, recently measured correlations between the black hole mass and the stellar bulge mass in nearby galaxies indicates that circumnuclear star formation must accompany black hole mass accretion. This research will make use of optical, near-infrared, (sub)millimeter, and radio technology to study the star formation and AGN activity in a sample of infrared (IR) luminous radio galaxies with redshifts 0.02- 0.2. These galaxies are a subset of the infrared luminous galaxy class, most of which are observed to be closely interacting/merging galaxies with clear evidence of both star formation and AGN activity; both phenomena are likely fueled by molecular gas. Single-dish and interferometric millimeter observations of carbon monoxide (CO), near-infrared imaging of recombination lines and H2, and VLA observations of the radio jets will be carried out. This program will elucidate the star formation rate, the amount of hot versus cold gas in the host galaxies, and the relation of jet emission to the stellar and molecular gas distributions. Studying these transitional objects offers one of the best opportunities to explore the connections between starbursts and active galactic nuclei.

AST 0206262Evans, Aaron 几乎所有附近的大质量星系都被认为具有静止的超大质量核黑洞。这些致密、黑暗的天体是先前高能事件的残余物，这些事件无疑引发了活跃星系核（AGN）活动的时期，类似于在附近的射电星系和准恒星天体（QSO）中观察到的活动。此外，最近测量的黑洞质量与附近星系中恒星核球质量之间的相关性表明，核周恒星的形成必定伴随着黑洞质量的吸积。这项研究将利用光学、近红外、（亚）毫米和无线电技术来研究红移 0.02-0.2 的红外 (IR) 发光射电星系样本中的恒星形成和活动星系核活动。这些星系是红外发光星系类的一个子集，其中大多数被观察到是紧密相互作用/合并的星系，有恒星形成和活动星系核活动的明确证据；这两种现象很可能都是由分子气体推动的。 将进行一氧化碳 (CO) 的单碟和干涉毫米波观测、重组线和 H2 的近红外成像以及射电喷流的 VLA 观测。 该计划将阐明恒星形成速率、主星系中热气体与冷气体的数量，以及射流发射与恒星和分子气体分布的关系。 研究这些过渡天体为探索星暴与活跃星系核之间的联系提供了最佳机会之一。