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Precision Measurement of Stellar Sizes and Circumstellar Material with 10 micron Interferometry and Narrow Frequency Bandwidths

Precision Measurement of Stellar Sizes and Circumstellar Material with 10 micron Interferometry and Narrow Frequency Bandwidths
利用 10 微米干涉仪和窄频带宽精确测量恒星尺寸和星周材料
批准号:
0097994
负责人:
Charles Townes
金额:
$21.0万
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
2001
资助国家:
美国
项目状态:
已结题
起止时间:
2001-07-01 至 2005-06-30

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中文摘要
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英文摘要
Townes, Charles" Precision Measurement of Stellar Sizes and Circumstellar Material with 10 Micron Interferometry and Narrow Frequency Bandwidths"AST- 0097994Berkeley's unique Infrared Spatial Interferometer will be used for several types of high-resolution measurements. These include interferometric measurement of the diameters of old stars in narrow spectral regions of the mid-infrared (10 micron) region chosen to avoid spectral lines due to gases in the atmospheres of stars and to include only continuum radiation. Measurements on the spectral lines themselves can be used to determine the spatial distribution of the circumstellar gas. Recently enlarged baselines on the interferometer allow accurate measurement of stellar sizes. In particular, changes in the diameter of the brightest Mira variables can be measured and these should lead to information about departures from the sphericity of these stars. One particular advantage of working at such long wavelengths is that the uncertainties due to limb darkening are much smaller.
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Digital Spectral Analysis of Heterodyne Signals from the Infrared Spatial Interferometer
  • 批准号:
    0804338
  • 项目类别:
    Continuing Grant
  • 资助金额:
    $90.77万
  • 财政年份:
    2008
  • 负责人:
    Charles Townes
  • 依托单位:
Precision Measurement of Stellar Sizes and Circumstellar Material with 10 Micron Interferometry and Narrow Frequency Bandwidths
  • 批准号:
    0707233
  • 项目类别:
    Standard Grant
  • 资助金额:
    $0.0万
  • 财政年份:
    2007
  • 负责人:
    Charles Townes
  • 依托单位:
PRECISION MEASUREMENT OF STELLAR SIZES AND CIRCUMSTELLAR MATERIAL WITH 10 MICRON INTERFEROMETRY AND NARROW FREQUENCY BANDWIDTHS
  • 批准号:
    0606839
  • 项目类别:
    Standard Grant
  • 资助金额:
    $14.37万
  • 财政年份:
    2006
  • 负责人:
    Charles Townes
  • 依托单位:
U.C.-Berkeley Infrared Spatial Interferometer
  • 批准号:
    9819729
  • 项目类别:
    Cooperative Agreement
  • 资助金额:
    $200.12万
  • 财政年份:
    1999
  • 负责人:
    Charles Townes
  • 依托单位:
国内基金
海外基金
Development of a Linear Stochastic Model for Wind Field Reconstruction from Limited Measurement Data
  • 批准号:
    --
  • 项目类别:
    --
  • 资助金额:
    40万元
  • 批准年份:
    2020
  • 负责人:
    Vikrant Gupta
  • 依托单位: