Diffuse band extinction and polarization in core-mantle grains |
| |
Authors: | J Mayo Greenberg Seung-Soo Hong |
| |
Institution: | (1) State University of New York at Albany and Dudley Observatory, Albany, New York, U.S.A.;(2) Present address: Huygens Laboratory, University of Leiden, The Netherlands |
| |
Abstract: | Diffuse band shapes in both extinction and polarization are calculated for interstellar coremantle particles for varying size distributions of mantle thickness. It is shown that no matter whether the source of the bands is in the silicate cores or the accreted icy mantles the polarization shapes are highly asymmetric for all mantel thicknesses. The extinction band shapes are significantly less asymmetric although the effect is clearly present. The only apparent possibility for producing symmetric band shapes in the dust grains is in the very small bare particles in interstellar space which, if they are aligned and produce the 2200 band, must exhibit a strong polarization effect in this region.Work supported in part by NASA Grant NGR-33-011-043.Paper presented at the Symposium on Solid State Astrophysics, held at the University College, Cardiff, Wales, between 9–12 July, 1974. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|