Properties of the Nuclear Cluster in NGC 4395
Properties of the Nuclear Cluster in NGC 4395
Properties of the Nuclear Cluster in NGC 4395
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The optical spectrum<br />
• In <strong>the</strong> blue, <strong>the</strong> nuclear<br />
spectrum is completely<br />
dom<strong>in</strong>ated by <strong>the</strong> AGN<br />
cont<strong>in</strong>uum<br />
• At <strong>the</strong> Ca II triplet, <strong>the</strong> stellar<br />
features are heavily<br />
contam<strong>in</strong>ated by high-order<br />
Paschen emission l<strong>in</strong>es and<br />
diluted by <strong>the</strong> AGN cont<strong>in</strong>uum<br />
It’s very difficult to measure<br />
<strong>the</strong> stellar velocity dispersion<br />
accurately from <strong>the</strong> optical<br />
spectrum!
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