WHY GALAXIES CARE ABOUT AGB STARS: THEIR IMPORTANCE AS ACTORS AND PROBES 378 323-+ 2007年 [査読有り]
We have performed heating experiments on amorphous silicates with the chondritic composition. The amorphous samples were heated to investigate the temperature and time dependence of crystallization. In IR spectra, the absorption peaks of olivine g...
WHY GALAXIES CARE ABOUT AGB STARS: THEIR IMPORTANCE AS ACTORS AND PROBES 378 279-+ 2007年 [査読有り]
To obtain information on the chemical and physical conditions of circumstellar dust and its regions of formation, we have investigated the behavior of the far-infrared absorption spectra of olivines with chemical compositions close to the Mg-end m...
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 370(4) 1599-1606 2006年8月 [査読有り]
The infrared reflectivities of crystalline forsterite (Mg2SiO4) were measured for the temperature range 295-50 K for each crystal axis, between wavenumber 5000 and 100 cm(-1). The reflection spectra show clear dependence of temperature; most of th...
Polarized infrared reflectance of large single crystals of forsterite was measured for each crystal axis at frequencies between 5000 cm(-1) and 100 cm(-1) with a resolution of 1 cm(-1). The reflectance spectra were analyzed based on classical disp...