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A Correlation Between Surface Densities of Young Stellar

A Correlation Between Surface Densities of Young Stellar

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Class I<br />

Class II<br />

Stars Form in Molecular Clouds?! You Don't Say!<br />

Av=5,7,9,...<br />

N(CII)/N(CI) = 92/22 = 4.2<br />

Age ~ 2 Myr<br />

Cep C cluster; Gutermuth et al. 2009<br />

! (6<br />

th nearest neighbor)<br />

The obvious statement isn't strong enough... In 1-2 Myr old clusters,<br />

star and gas surface densities are correlated locally on scales >0.3 pc!

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