Hubble space telescope reveals multiple sub-giant branch in eight globular clusters
In the last few years many globular clusters (GCs) have revealed complex color-magnitude diagrams, with the presence of multiple main sequences (MSs), broad or multiple sub-giant branches (SGBs) and MS turnoffs, and broad or split red giant branches (RGBs). After a careful correction for differential reddening, high-accuracy photometry with the Hubble Space Telescope (HST) presented in this paper reveals a broadened or even split SGB in five additional Milky Way GCs: NGC362, NGC5286, NGC6656,...[Show more]
|Collections||ANU Research Publications|
|Source:||Astrophysical Journal, The|
|Access Rights:||Open Access|
|01_Piotto_Hubble_space_telescope_reveals_2012.pdf||5.91 MB||Adobe PDF|
|02_Piotto_Hubble_space_telescope_reveals_2012.pdf||3.96 MB||Adobe PDF|
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