The HI-H 2 Transition and Star Formation in Early-Type Galaxies
The HI-H 2 Transition and Star Formation in Early-Type Galaxies
The HI-H 2 Transition and Star Formation in Early-Type Galaxies
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NGC 5666 NGC 807 NGC 3656<br />
peak <strong>HI</strong> surface density is 9.1x10 20<br />
cm −2<br />
peak <strong>HI</strong> surface density is 7.7x10 20 cm −2<br />
peak <strong>HI</strong> surface density is 7.2x10 21 cm −2<br />
Morganti et al. 2006<br />
NGC 3032<br />
NGC 4150 UGC 1503<br />
peak <strong>HI</strong> surface density is 2.9x10 19 cm −2<br />
Peak <strong>HI</strong> surface density is 1.3x10 21 cm −2<br />
peak <strong>HI</strong> surface density is 9.9x10 20 cm −2<br />
6
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