Study of grain compositions in comet Levy 1990XX

Details Study of grain compositions in comet Levy 1990XX Study of grain compositions in comet Levy 1990XX

2007-05-22

arxiv.org/abs/0705.3163v1

Astronomy and Astrophysics

Astrophysics

9 pages, 5 figures

Scientific paper

In the present work, the non-spherical dust grain characteristics of comet Levy 1990XX with different silicate grain compositions (both pyroxene and olivine) are studied using the T-matrix method. Considering amorphous pyroxene grain (Mg$_x$Fe$_{1-x}$SiO$_3$) with $x$ (= 0.4, 0.5, 0.6, 0.7, 0.8, 0.95, 1) and amorphous olivine grain (Mg$_{2y}$Fe$_{2-2y}$SiO$_4$) with $y$ (= 0.4, 0.5) (Dorschner et al. 1995), the observed polarization data of comet Levy1990XX are analyzed using the T-matrix code at $\lambda$ = 0.485 $\mu m$.

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