Astromineralogy – Dust Formation

Both crystalline and amorphous silicate dust are observed in circumstellar environments, and they could be a probe to decipher the physical and chemical conditions of dust-forming environments.  We have been doing laboratory experiments to link evaporation, vapor growth, and crystallization processes of silicate dust with infrared astronomy (astromineralogy) and the study of presolar grains.

Related publications

Tachibana S., Kamizuka T., Hirota T., Sakai N., Oya Y., Takigawa A. and Yamamoto S. (2019) Spatial distribution of AlO in a high mass protostar candidate Orion Source I. Astrophys. J. Letters in press.

Yamamoto D., Kuroda M., Tachibana S., Sakamoto N. and Yurimoto H. (2018) Oxygen isotopic exchange between amorphous silicate and water vapor and its implications to oxygen isotopic evolution in the early Solar System. Astrophys. J. 865, 98 (14pp). doi.org/10.3847/1538-4357/aadcee

Yamamoto D. and Tachibana S. (2018) Water vapor pressure dependence of crystallization kinetics of amorphous forsterite. ACS Earth Space Chem. 2, 778-786. doi:10.1021/acsearthspacechem.8b00047

Takigawa A., Tachibana S., Nagahara H. and Ozawa K. (2015) Evaporation and condensation kinetics of corundum:The origin of the 13-μm feature of oxygen-rich AGB stars. Astrophys. J. Suppl., 218, doi:10.1088/0067-0049/218/1/2

Takigawa A., Tachibana S., Huss G. R., Nagashima K., Makide K., Krot A. N. and Nagahara H. (2014) Morphology and crystal structures of solar and presolar Al2O3 in unequilibrated ordinary chondrites. Geochim. Cosmochim. Acta 124, 309-327. doi:10.1016/j.gca.2013.09.013

Takigawa A. and Tachibana S. (2012) Crystallographically anisotropic shape of forsterite: New probe for evaluating dust formation history from infrared spectroscopy. Astrophys. J. 750, 149-164. doi:10.1088/0004-637X/750/2/149

Tachibana S., Nagahara H., Ozawa K., Ikeda, Y., Nomura, R., Tatsumi, K., and Joh, Y. (2011) Kinetic condensation and evaporation of metallic iron and implications for metallic iron dust formation. Astrophys. J. 736, 16. doi:10.1088/0004-637X/736/1/16

Koike C., Imai Y., Chihara H., Suto H., Murata K., Tsuchiyama A., Tachibana S. and Ohara S. (2010)Effects of forsterite grain shape on infrared spectra. Astrophys. J. 709, 983-992. doi:10.1088/0004-637X/709/2/983

Nagahara H., Ozawa K., Ogawa R., Tachibana S. and Chiba H. (2009) Laboratory condensation and reaction of silicate dust. In Cosmic Dust - Near and Far (Eds. Th. Henning, E. Grun and J. Steinacker), ASP Conf. Ser., p.403-410.

Takigawa A., Tachibana S., Nagahara H., Ozawa K. and Yokoyama M. (2009) Anisotropic evaporation of forsterite and its implication for dust formation conditions in circumstellar environments. Astrophys. J. Letters 707, L97-L101. doi:10.1088/0004-637X/707/1/L97

Suto H., Sogawa H., Tachibana S., Koike C., Karoji H., Tsuchiyama A., Chihara H., Mizutani K., Akedo J., Ogiso K., Fukui T., Ohara S. (2006) Low temperature single crystal reflection spectra of forsterite. Monthly Notices of the Royal Astronomical Society Main Journal 370, 1599-1606. doi:10.1111/j.1365-2966.2006.10594.x

Sogawa H., Koike C., Chihara H., Suto H., Tachibana S., Tsuchiyama A. and Kozasa T. (2006)Infrared reflection spectra of forsterite crystal. Astron. Astrophys. 451, 357-361. doi:10.1051/0004-6361:20041538

Chihara H., Koike C., Tsuchiyama A., Tachibana S. and Sakamoto D. (2002)Compositional dependence of infrared absorption spectra of crystalline silicates. I. Mg-Fe pyroxenes. Astron. Astrophys. 391, 267-273. doi:10.1051/0004-6361:20020791