Some Theoretical Considerations about the Origin of the 220 NM Interstellar Hump

Details Some Theoretical Considerations about the Origin of the 220 NM Interstellar Hump Some Theoretical Considerations about the Origin of the 220 NM Interstellar Hump

Jan 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996ap%26ss.235..233p&link_type=abstract

Astrophysics and Space Science, Volume 235, Issue 2, pp.233-243

Astronomy and Astrophysics

Astrophysics

2

Scientific paper

The density of state (σ and π) of a small graphite-like planar cluster is computed using a tight binding approach. We point out a possible correlation between the presence of surface levels, dependent on the cluster size and localized near the middle of the σ band gap, and the origin of the 220 nm interstellar hump. The influence of sp3 sites — or impurities — randomly distributed throughout the cluster, is also discussed.

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