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PMAS observing run at Calar Alto 3.5m Telescope: Spectroscopic surface brightness fluctuations: pilot study in M31

PMAS observing run at Calar Alto 3.5m Telescope: Spectroscopic surface brightness fluctuations: pilot study in M31
在 Calar Alto 3.5m 望远镜上运行 PMAS 观测：光谱表面亮度波动：M31 的试点研究
批准号：
247977503
负责人：
Professor Dr. Martin Matthias Roth
金额：
$0.0万
依托单位：
Leibniz-Institut für Astrophysik Potsdam (AIP)
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2013
资助国家：
德国
项目状态：
已结题
起止时间：
2012-12-31 至 2014-12-31
来源：
https://gepris.dfg.de/gepris/projekt/247977503?language=en
关键词：
PMASobservingrunCalarAlto

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英文摘要
The level of graininess in images of unresolved stellar populations in nearby galaxies can be quantified in terms of the power spectrum of spatial frequencies in direct images. The smoother the surface brightness, the more distant is, in principle, a given galaxy. This principle has been exploited successfully as an extragalactic distance estimator, known as the SBF method. We propose to revert the principle and explore the grainy appearance of surface brightness distributions in datacubes from galaxies at known distance as an innovative diagnostic tool for stellar populations.
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