ダウンロード数: 32
このアイテムのファイル:
ファイル | 記述 | サイズ | フォーマット | |
---|---|---|---|---|
2041-8213_ac7b24.pdf | 484.1 kB | Adobe PDF | 見る/開く |
タイトル: | Faint debris disk peering through superflare light echo |
著者: | Arimatsu, Ko ![]() ![]() ![]() Kamizuka, Takafumi |
著者名の別形: | 有松, 亘 |
キーワード: | Debris disks Flare stars Time domain astronomy Observational astronomy |
発行日: | 1-Jul-2022 |
出版者: | American Astronomical Society |
誌名: | The Astrophysical Journal Letters |
巻: | 933 |
号: | 1 |
論文番号: | L25 |
抄録: | We present the detectability of strong mid-infrared (MIR) light echoes from faint debris disks illuminated by bright superflares of M-dwarf stars. Circumstellar dust grains around an M-dwarf star are simultaneously heated by superflare radiation. One can thus expect their re-emission in the MIR wavelength regime. According to our model calculations for the Proxima Centauri system, the nearest M-dwarf star system, thermal emission echoes from an inner (r < 1 au) debris disk with a total mass down to that of the solar system's zodiacal dust are expected to emerge at wavelengths longer than ∼10 μm with a strength comparable to or greater than a white-light superflare. Also, observable echoes from inner- (r ≲ 0.5 au) debris disks irradiated by energetic ( ≳10[33.5] erg) superflares of nearby (D < 3 pc) M dwarfs are expected. Our simulation results indicate that superflare monitoring using high-speed optical instruments like OASES and its prompt follow-up using ground-based MIR instruments, such as TAO/MIMIZUKU, can detect these MIR light echoes from debris disks around solar neighborhood flare stars. |
著作権等: | © 2022. The Author(s). Published by the American Astronomical Society. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. |
URI: | http://hdl.handle.net/2433/282136 |
DOI(出版社版): | 10.3847/2041-8213/ac7b24 |
出現コレクション: | 学術雑誌掲載論文等 |
![](/dspace/image/articlelinker.gif)
このアイテムは次のライセンスが設定されています: クリエイティブ・コモンズ・ライセンス