The effects of differential reddening and stellar rotation on the appearance of multiple populations in star clusters: The case of Trumpler 20
We present a detailed analysis of the upper main sequence of the 1.3 Gyr old open cluster Trumpler 20. High-accuracy BVI photometry combined with the Very Large Telescope/FLAMES medium-resolution spectroscopy of 954 stars is essential to understanding the unusual appearance of the color-magnitude diagram (CMD), initially suggesting multiple populations in Trumpler 20. We show that differential reddening is a dominant contributor to the apparent splitting/widening of the main-sequence turnoff...[Show more]
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|Source:||Astrophysical Journal Letters|
|01_Platais_The_effects_of_differential_2012.pdf||7 MB||Adobe PDF||Request a copy|
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