... their distances using the tip of the red giant branch in a Colour-Magnitude diagram ... can then also use these Colour-Magnitude diagrams to study the recent star-formation ...
... But what of the other 90%? These were much fainter: from 16 th magnitude to fainter than 25 th magnitude. ... One source, for example, was fainter than 23 rd magnitude in the optical, but a stonking 15 th magnitude in the near-IR! ...
... leading to spatial resolution typically an order of magnitude or more worse than the ... dominant noise source, decreasing your sensitivity by an order of magnitude or more ...
... COBE NIR data and the apparent magnitude distributions of bulge clump giant stars ... a good match to the apparent magnitude distributions of clump giants measured by ...
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Ссылки http://www.mso.anu.edu.au/~kcf/surya/spiralstructure/Gerhard02 -- 285.1 Кб -- 13.05.2006 Похожие документы
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