2009ApJ...698.1903M


C.D.S. - SIMBAD4 rel 1.7 - 2021.05.06CEST01:03:34

2009ApJ...698.1903M - Astrophys. J., 698, 1903-1906 (2009/June-3)

Crystallization experiments on amorphous magnesium silicate. II. Effect of stacking faults on infrared spectra of enstatite.

MURATA K., CHIHARA H., KOIKE C., NOGUCHI T., TAKAKURA T., IMAI Y. and TSUCHIYAMA A.

Abstract (from CDS):

We carried out experiments of low-temperature infrared spectroscopy and transmission electron microscopy of enstatite (MgSiO3) synthesized by heating of amorphous magnesium silicate. There is a discrepancy between the infrared feature of enstatite obtained in this experiment and that of fine powdered single crystals. This reflects stacking disorder of enstatite. We show that circumstellar dust emission of enstatite is similar to the infrared feature measured in this experiment. This result strongly suggests that circumstellar enstatite has abundant stacking faults and is different from the single crystal.

Abstract Copyright:

Journal keyword(s): circumstellar matter - dust, extinction - infrared: ISM - methods: laboratory

Simbad objects: 2

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Number of rows : 2

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 HD 44179 pA* 06 19 58.2185496 -10 38 14.706068 9.51 9.33 9.02     B9Ib/II 725 0
2 EM* MWC 922 Be* 18 21 16.059408 -13 01 25.68432     13.80 13.65   B[e] 85 0

    Equat.    Gal    SGal    Ecl

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2021.05.06-01:03:34

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