|
樋口 有理可 所属 京都産業大学 理学部 宇宙物理・気象学科 職種 准教授 |
|
| 言語種別 | 英語 |
| 発行・発表の年月 | 2018/01/01 |
| 形態種別 | 研究論文 |
| 査読 | 査読あり |
| 標題 | Multi-band photometry of trans-Neptunian objects in the Subaru Hyper Suprime-Cam survey |
| 執筆形態 | その他 |
| 掲載誌名 | Publications of the Astronomical Society of Japan |
| 出版社・発行元 | Oxford University Press (OUP) |
| 巻・号・頁 | 70(SP1) |
| 著者・共著者 | Tsuyoshi Terai,Fumi Yoshida,Keiji Ohtsuki,Patryk Sofia Lykawka,Naruhisa Takato,Arika Higuchi,Takashi Ito,Yutaka Komiyama,Satoshi Miyazaki,Shiang-Yu Wang |
| 概要 | We present visible multi-band photometry of trans-Neptunian objects (TNOs) observed by the Subaru Telescope in the framework of the Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP) from 2014 March to 2016 September. We measured the five broad-band (g, r, i, z, and Y) colors over the wavelength range from 0.4 mu m to 1.0 mu m for 30 known TNOs using the HSC-SSP survey data covering similar to 500 deg(2) of sky within +/- 30 degrees of ecliptic latitude. This dataset allows us to investigate the correlations between the dynamical classes and visible reflectance spectra of TNOs. Our results show that the hot classical and scattered populations with orbital inclination (I) of I greater than or similar to 6 degrees share similar color distributions, while the cold classical population with I less than or similar to 6 degrees has a different color distribution from the others. The low-I population has reflectance increasing toward longer wavelengths up to similar to 0.8 mu m, with a steeper slope than the high-I population at less than or similar to 0.6 mu m. We also find a significant anti-correlation between g - r/r - i colors and inclination in the high-I population, as well as a possible bimodality in the g - i color vs. eccentricity plot. |
| DOI | 10.1093/pasj/psx105 |
| ISSN | 0004-6264/2053-051X |
| PermalinkURL | http://academic.oup.com/pasj/article-pdf/70/SP1/S40/23692558/psx105.pdf |