| Item type |
デフォルトアイテムタイプ_（フル）(1) |
| 公開日 |
2023-03-18 |
| タイトル |
|
|
タイトル |
Multiband Optical Observation of The P/2010 A2 Dust Tail |
|
言語 |
en |
| 作成者 |
Kim, Junhan
Ishiguro, Masateru
Hanayama, Hidekazu
Hasegawa, Sunao
Usui, Fumihiko
Yanagisawa, Kenshi
Sarugaku, Yuki
Watanabe, Jun-ichi
Yoshida, Michitoshi
|
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利情報 |
|
|
権利情報 |
(c) 2012. The American Astronomical Society. All rights reserved. Printed in the U.S.A. |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
comets: general |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
comets: individual (P/2010 A2) |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
minor planets, asteroids: general |
| 主題 |
|
|
主題Scheme |
NDC |
|
主題 |
440 |
| 内容記述 |
|
|
内容記述 |
An inner main-belt asteroid, P/2010 A2, was discovered on 2010 January 6. Based on its orbital elements, it is considered that the asteroid belongs to the Flora collisional family, where S-type asteroids are common, while showing a comet-like dust tail. Although analysis of images taken by the Hubble Space Telescope and Rosetta spacecraft suggested that the dust tail resulted from a recent head-on collision between asteroids, an alternative idea of ice sublimation was suggested based on the morphological fitting of ground-based images. Here, we report a multiband observation of P/2010 A2 made on 2010 January with a 105 cm telescope at the Ishigakijima Astronomical Observatory. Three broadband filters, g', R-c, and I-c, were employed for the observation. The unique multiband data reveal that the reflectance spectrum of the P/2010 A2 dust tail resembles that of an Sq-type asteroid or that of ordinary chondrites rather than that of an S-type asteroid. Due to the large error of the measurement, the reflectance spectrum also resembles the spectra of C-type asteroids, even though C-type asteroids are uncommon in the Flora family. The reflectances relative to the g' band (470 nm) are 1.096 +/- 0.046 at the R-c band (650 nm) and 1.131 +/- 0.061 at the I-c band (800 nm). We hypothesize that the parent body of P/2010 A2 was originally S-type but was then shattered upon collision into scattering fresh chondritic particles from the interior, thus forming the dust tail. |
|
言語 |
en |
| 出版者 |
|
|
出版者 |
IOP Publishing Ltd |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 関連情報 |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
10.1088/2041-8205/746/1/L11 |
| 関連情報 |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
http://dx.doi.org/10.1088/2041-8205/746/1/L11 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
2041-8205 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA00553264 |
| 開始ページ |
|
|
開始ページ |
L11 |
| 書誌情報 |
Astrophysical Journal Letters
Astrophysical Journal Letters
巻 746,
号 1,
p. L11,
発行日 2012
|
| 旧ID |
34749 |
AstrophysJLet_746_L11.pdf (1.0 MB)
