The Tagish Lake Meteorite as a Possible Sample from a T or D Type Asteroid
نویسندگان
چکیده
Hiroi, A. Kanno, R. Nakamura, M. Abe, M. Ishiguro, S. Hasegawa, S. Miyasaka, T. Sekiguchi, H. Terada, and G. Igarashi, Dept. of Geological Sciences, Brown University, Providence, RI 02912, USA., Dept. of Earth & Planetary Science, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 1130033, Japan, Lunar Mission Research Center, National Space Development Agency of Japan, 2-1 Sengen, Tsukuba City, Ibaraki 305-8505, Japan, Research Division for Planetary Science, Institute of Space and Astronautical Science, Tokyo Metropolitan Government, 2-8-1, Nishi-Shinjuku, Shinjuku-ku, Tokyo 163-8001, Jpapan, ALMA-J Office, National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan, Subaru Telescope, National Astronomical Observatory of Japan, 650 North A'ohoku Place, Hilo, HI 96720, USA.
منابع مشابه
The Tagish Lake meteorite: a possible sample from a D-type asteroid.
A new type of carbonaceous chondrite, the Tagish Lake meteorite, exhibits a reflectance spectrum similar to spectra observed from the D-type asteroids, which are relatively abundant in the outer solar system beyond the main asteroid belt and have been inferred to be more primitive than any known meteorite. Until the Tagish Lake fall, these asteroids had no analog in the meteorite collections. T...
متن کاملTagish Lake -- A Meteorite from the Far Reaches of the Asteroid Belt
Written by David W. Mittlefehldt NASA, Johnson Space Center Pieces of a 56-metric-ton meteorite rained down over a wide area of Canada on January 18, 2000. Many pieces landed on the frozen Tagish Lake, allowing scientists to recover numerous samples, and giving the meteorite its name. Studies show that the meteorite is intermediate in composition between the two most primitive groups of chondri...
متن کاملThe fall, recovery, orbit, and composition of the Tagish Lake meteorite: a new type of carbonaceous chondrite.
The preatmospheric mass of the Tagish Lake meteoroid was about 200,000 kilograms. Its calculated orbit indicates affinity to the Apollo asteroids with a semimajor axis in the middle of the asteroid belt, consistent with a linkage to low-albedo C, D, and P type asteroids. The mineralogy, oxygen isotope, and bulk chemical composition of recovered samples of the Tagish Lake meteorite are intermedi...
متن کامل19.10 N&V mx
but only rarely is a new type of meteorite discovered. Last week in Science, Brown et al. described what might be such an event with the orbit, fall and recovery of numerous fragments of a meteorite in the Canadian Yukon. Named after the frozen lake on which it fell, the Tagish Lake meteorite is a chondrite, which means it is a stony aggregate of matter from the early Solar System. It is descri...
متن کاملPreliminary SEM and TEM study of pristine samples of Tagish Lake meteorite
Introduction: The Tagish Lake meteorite fell on the frozen lake in northern British Columbia, Canada, on 18 th of January, 2000 [1]. It has been the subject of intense preliminary petrographical, geochemical (both organic and non-organic), lithological and isotopic studies [e.g., 2-4]. However, little is still known about this meteorite. These studies demonstrated that Tagish Lake is an ungroup...
متن کامل