Near-infrared observations of active asteroid (3200) Phaethon reveal no evidence for hydration
Near-infrared observations of active asteroid (3200) Phaethon reveal no evidence for hydration
复制标题
对活跃小行星 (3200) Phaethon 的近红外观测显示没有水合作用的证据
DOI:
10.1038/s41467-020-15637-7
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发表时间:
2020
影响因子:
16.6
通讯作者:
Arai, Tomoko
中科院分区:
文献类型:
--
作者:
Takir, Driss;Kareta, Theodore;Emery, Joshua P.;Hanuš, Josef;Reddy, Vishnu;Howell, Ellen S.;Rivkin, Andrew S.;Arai, Tomoko
Asteroid (3200) Phaethon is an active near-Earth asteroid and the parent body of the Geminid Meteor Shower. Because of its small perihelion distance, Phaethon’s surface reaches temperatures sufficient to destabilize hydrated materials. We conducted rotationally resolved spectroscopic observations of this asteroid, mostly covering the northern hemisphere and the equatorial region, beyond 2.5-µm to search for evidence of hydration on its surface. Here we show that the observed part of Phaethon does not exhibit the 3-µm hydrated mineral absorption (within 2σ). These observations suggest that Phaethon’s modern activity is not due to volatile sublimation or devolatilization of phyllosilicates on its surface. It is possible that the observed part of Phaethon was originally hydrated and has since lost volatiles from its surface via dehydration, supporting its connection to the Pallas family, or it was formed from anhydrous material.
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DOI:
--
发表时间:
2018
期刊:
49th Lunar and Planetary Science Conference abstracts
影响因子:
--
作者:
T. Arai;M. Kobayashi;K. Ishibashi;F. Yoshida;H. Kimura;K. Wada;H. Senshu;M. Yamada;O. Okudaira;T. Okamoto;S. Kameda;R. Srama;H. Kruger;M. Ishiguro;H. Yabuta;T. Nakamura;J. Watanabe;T. Ito;K. Ohtsuka;S. Tachibana
通讯作者:
S. Tachibana
DOI:
--
发表时间:
2018
期刊:
影响因子:
--
作者:
Shinnaka Yoshiharu;Kasuga Toshihiro;Furusho Reiko;Namiki Noriyuki;Noda Hirotomo;Terai Tsuyoshi;Watanabe Jun-ichi
通讯作者:
Watanabe Jun-ichi
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
D. Takir;J. Emery;H. McSween
通讯作者:
H. McSween
影响因子:
16.6
作者:
Hergenrother, C. W.;Maleszewski, C. K.;Marty, B.
通讯作者:
Marty, B.
DOI:
--
发表时间:
2018
期刊:
Journal of Geophysical Research: Planets
影响因子:
--
作者:
A. Rivkin;F. DeMeo
通讯作者:
F. DeMeo