Early Chemical Evolution of the Solar System

I am interested in the early chemical evolution of the Solar System prior to the planet formation because the chemical evolution of the early Solar System resulted in the formation of chemically-diverse planets.  I do laboratory experiments to simulate chemical reactions in the early Solar System; evaporation, condensation, gas-solid reactions, crystallization, hydration, isotopic exchange reactions and so on.

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

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

Pascucci I. and Tachibana S. (2010)The clearing of protoplanetary disks and of the protosolar nebula. In Protoplanetary Dust: Astrophysical and Cosmochemical Perspectives (Eds. D. Apai and D. S. Lauretta), Cambridge Univ. Press, p.263-298.

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

Yamada M., Tachibana S., Nagahara H. and Ozawa K. (2006) Anisotropy of Mg isotopic fractionation during evaporation and Mg self-diffusion of forsterite in vacuum. Planetary and Space Science 54, 1096-1106. doi:10.1016/j.pss.2006.05.020

Tachibana S., Tsuchiyama A. and Nagahara H. (2002) Experimental study of incongruent evaporation kinetics of enstatite in vacuum and in hydrogen gas. Geochim. Cosmochim. Acta 66, 713-728. doi:10.1016/S0016-7037(01)00797-9

Tachibana S. (2001) Kinetic effects on evaporation and condensation of Mg-silicate dust particles moving in the turbulent protoplanetary disk. Proc. Japan Acad.Ser. B 77, 37-42. doi:10.2183/pjab.77.37

Tsuchiyama A., Tachibana S. and Takahashi T. (1999) Evaporation of forsterite in the primordial solar nebula; rates and accompanied isotopic fractionation. Geochim. Cosmochim. Acta 63, 2451-2466. doi:10.1016/S0016-7037(99)00190-8

Tachibana S., Tsuchiyama A. and Watanabe S. (1999) Evaporation of Fe and FeS in the active stage of the primordial solar nebula, and Fe/S fractionation. Antarc. Met. Res. 12, 213-242.

Tachibana S. and Tsuchiyama A. (1998) Incongruent evaporation of troilite (FeS) in the primordial solar nebula; an experimental study. Geochim. Cosmochim. Acta 62, 2005-2022. doi:10.1016/S0016-7037(98)00122-7

Tsuchiyama A., Takahashi T. and Tachibana S. (1998) Evaporation rates of forsterite in the system Mg2SiO4-H2. Mineral.J. 20, 113-126. doi:10.2465/minerj.20.113