Revisiting the search for the parent body of the Tagish Lake meteorite -Case of a T/D asteroid 308 Polyxo-

概要

論文の詳細を見る
The Tagish Lake meteorite which fell early in 2000 have turned out to be the most primitive meteorite in our collections. T. Hiroi et al. (Science, 293, 2234, 2001) identified the D asteroids, especially those in the main belt, as the most probable candidate for the parent body of the meteorite. After examining more details of reflectance spectra of dark asteroids and Tagish Lake meteorite samples, we have found that the search for the parent body should be expanded beyond just the type D of the Tholen's classification used by Hiroi et al. (ibid, 2001) to include the T type. Among the D and T asteroids we examined for their possibility to be the parent body of the Tagish Lake meteorite, a T/D asteroid 308 Polyxo has turned out to be one of the best candidates because of its similarity to the Tagish Lake sample we use in reflectance spectral shape, albedo, and the presence of 3-μm water band.
国立極地研究所の論文