Stéphane Courteau
Stéphane Courteau
Stéphane Courteau
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Ascona/Terschelling Highlights<br />
Galactic open clusters<br />
• abundance gradient<br />
bottoms out at<br />
R G = 10-12 kpc,<br />
[Fe/H] = -0.5<br />
for clusters with<br />
ages from 1 to 5 Gyr<br />
(no age-abundance<br />
relation)<br />
• The abundance gradient<br />
in the disk has flattened<br />
with time, tending<br />
towards solar values.<br />
• outer disk is α-enhanced<br />
Yong & Carney 2005
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