التفاصيل البيبلوغرافية
| العنوان: |
(3200) Phaethon polarimetry in the negative branch: new evidence for the anhydrous nature of the DESTINY+ target asteroid. |
| المؤلفون: |
Geem, Jooyeon, Ishiguro, Masateru, Takahashi, Jun, Akitaya, Hiroshi, Kawabata, Koji S, Nakaoka, Tatsuya, Imazawa, Ryo, Mori, Fumiki, Jin, Sunho, Bach, Yoonsoo P, Jo, Hangbin, Kuroda, Daisuke, Hasegawa, Sunao, Yoshida, Fumi, Ishibashi, Ko, Sekiguchi, Tomohiko, Beniyama, Jin, Arai, Tomoko, Ikeda, Yuji, Shinnaka, Yoshiharu |
| المصدر: |
Monthly Notices of the Royal Astronomical Society: Letters; Oct2022, Vol. 516 Issue 1, pL53-L57, 5p |
| مصطلحات موضوعية: |
POLARIMETRY, SMALL solar system bodies, CHONDRITES, ALBEDO, ASTEROIDS, HYDROUS |
| مستخلص: |
We report on the first polarimetric study of (3200) Phaethon, the target of JAXA's DESTINY+ mission, in the negative branch to ensure its anhydrous nature and to derive an accurate geometric albedo. We conducted observations at low phase angles (Sun-target-observer angle, α = 8.8–32.4°) from 2021 October to 2022 January and found that Phaethon has a minimum polarization degree P min = −1.3 ± 0.1 per cent, a polarimetric slope h = 0.22 ± 0.02 per cent deg−1, and an inversion angle α0 = 19.9 ± 0.3°. The derived geometric albedo is p V = 0.11 (in the range of 0.08–0.13). These polarimetric properties are consistent with anhydrous chondrites, contradict hydrous chondrites, and typical cometary nuclei. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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