A Multi-Wavelength Observing Program of Io Using Adaptive Optics and Interferometric Techniques

利用自适应光学和干涉技术的木卫一多波长观测程序

• 批准号: 1313485
• 负责人: Imke de Pater
• 金额: $ 45.55万
• 依托单位: University of California-Berkeley
• 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 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1313485&HistoricalAwards=false
• 关键词: Multi; Wavelength; Observing; Program; Io

Io is one of the most remarkable bodies in our solar system, with volcanoes driven by tidal heating and complex interactions with Jupiter's magnetosphere. Despite extensive studies from the ground and from spacecraft, fundamental questions, concerning the nature and location of internal dissipation, the composition of the dominant magma, and the interactions among the volcanoes, surface frost, atmosphere, and Jupiter's magnetic field, remain unanswered. The proposing team will conduct an extensive observational program of imaging and spectroscopy to monitor Io's volcanoes and atmosphere, making use of a wide range of telescope facilities including the Atacama Large Millimeter/Submillimeter Array (ALMA), the Combined Array for Research in Millimeter-Wave Astronomy (CARMA), the Infrared Telescope Facility (IRTF), and the Gemini and Keck Observatories. These observations will yield (1) global maps of Io at 1-5 microns, at least once a year, to map and monitor volcanic activity; (2) determinations of the sulfur monoxide gas distribution while Io is in Jupiter's shadow; (3) observations of sulfur monoxide and sulfur dioxide gases to constrain the structure of and dynamics in Io's atmosphere; and (4) correlations of atmospheric sulfur monoxide and sulfur dioxide gases with sulfur dioxide ice and volcanic hot spots. The global infrared maps of Io, will be integrated into the USGS global Io database. The project will support the work of undergraduate and graduate students, and proposing team members will be involved in a variety of public outreach activities.

木卫一是太阳系中最引人注目的天体之一，火山由潮汐加热和与木星磁层的复杂相互作用驱动。尽管从地面和航天器上进行了广泛的研究，但关于内部耗散的性质和位置、主要岩浆的组成以及火山、地表霜冻、大气和木星磁场之间的相互作用等基本问题仍然没有答案。提出建议的团队将实施一项广泛的成像和光谱观测计划，以监测木卫一的火山和大气，利用广泛的望远镜设施，包括阿塔卡马大毫米/亚毫米阵列(ALMA)、联合毫米波天文研究阵列(CARMA)、红外望远镜设备(IRTF)以及双子座和凯克天文台。这些观测将产生：(1)至少每年一次的1-5微米的木卫一全球地图，以绘制和监测火山活动；(2)确定木星阴影下木卫一的一氧化硫气体分布；(3)观测一氧化硫和二氧化硫气体，以限制木卫一大气层的结构和动态；(4)大气中一氧化硫和二氧化硫气体与二氧化硫冰和火山热点的关系。木卫一的全球红外地图将纳入美国地质勘探局的全球木卫一数据库。该项目将支持本科生和研究生的工作，提出建议的团队成员将参与各种公共外联活动。