文章基本信息

标题：NEW HUBBLE SPACE TELESCOPE WFC3/UVIS OBSERVATIONS AUGMENT THE STELLAR-POPULATION COMPLEXITY OF ω CENTAURI*
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作者：A. Bellini ; L. R. Bedin ; G. Piotto 等
期刊名称：The Astronomical journal
印刷版ISSN：0004-6256
电子版ISSN：1538-3881
出版年度：2010
卷号：140
期号：2
DOI：10.1088/0004-6256/140/2/631
语种：English
出版社：American Institute of Physics
摘要：We used archival multi-band Hubble Space Telescope observations obtained with the Wide Field Camera 3 in the UV-optical channel to present important new observational findings on the color-magnitude diagram (CMD) of the Galactic globular cluster ω Centauri. The UV WFC3 data have been coupled with available Wide Field Channel/Advanced Camera for Surveys optical-band data. The new CMDs, obtained from the combination of colors coming from eight different bands, disclose an even more complex stellar population than previously identified. This paper discusses the detailed morphology of the CMDs.
关键词：catalogs;globular clusters: individual (NGC 5139);Hertzsprung–Russell and C–M diagrams;stars: Population II Online-only material: color figures