Study on the origin of interstellar dust based on Infrared Observations

基于红外观测的星际尘埃起源研究

• 批准号: 22740115
• 负责人: SAKON Itsuki
• 金额: $ 2.75万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22740115/
• 关键词: 赤外線観測; あかり衛星; 超新星; 新星; 固体微粒子; 星間物質; 赤外線天文学; 星間塵; 星周塵; すばる望遠鏡; 星周物質

This study focuses on the dust formation by evolved massive stars(e. g., supernovae, Wolf-Rayet binary activities) and novae. The chemical composition and the temporal evolution of mass and temperature of dust formed around them have been examined based on observations with AKARI as well as with mid-infrared instruments onbaord 8m class ground-based telescopes(Subaru/COMICS and Gemini-S/TReCS). One of the important findings of this study is that, at least in the case of WR140, the observed amount of dust that survives the harsh circumstellar environment to become the interstellar dust is small because of the possible destruction process after the nucleation. This result may suggest that WR binary activity may not directly contribute as a major dust budget in the early universe. This study also have successfully demonstrated the dust formation history of nova V1280Sco over 2000 days from the initial nova outburst.

本研究主要研究演化的大质量恒星(如超新星、Wolf-Rayet双星活动)和新星形成的尘埃。根据AKARI和BORD8M地面望远镜(SUBARU/COMICS和GEMINI-S/TRECS)上的中红外仪器的观测，研究了它们周围形成的尘埃的化学成分以及质量和温度的时间演化。这项研究的一个重要发现是，至少在WR140的情况下，观测到的在恶劣的星际环境中幸存下来成为星际尘埃的尘埃量很小，因为成核后可能会有破坏过程。这一结果可能表明，WR双星活动可能不是早期宇宙中主要的尘埃收支的直接贡献。这项研究还成功地证明了新星V1280Sco从最初的新星爆发起超过2000天的尘埃形成历史。

项目成果

Multi-epoch Observations of Dust Formed around WR140

WR140 周围形成的尘埃的多历元观测

• 发表时间: 2011
• 作者: Abdo;et al;左近樹
• 通讯作者: 左近樹

AKARI observations of ice absorption bands towards edge-on young stellar objects

AKARI 对边缘年轻恒星物体冰吸收带的观测

• DOI: 10.1051/0004-6361/201015999
• 发表时间: 2012
• 期刊: Astronomy & Astrophysics
• 影响因子: 6.5
• 作者: Aikawa;Y
• 通讯作者: Y

Mid-Infrared Observations of dust forming novae with Gemini/T-ReCS

使用 Gemini/T-ReCS 对尘埃形成新星进行中红外观测

• 发表时间: 2011
• 作者: M.Ackermann;K.Asano;et al.;T. Ohtsuka;左近樹
• 通讯作者: 左近樹

Multi-epoch near- to mid-IR observation of dust forming nova V1280Sco

尘埃形成新星 V1280Sco 的多历元近中红外观测

• 发表时间: 2011
• 作者: Paul J. Kuzmenko;Steve L. Little;Yuji Ikeda;and Naoto Kobayashi;Itsuki Sakon
• 通讯作者: Itsuki Sakon

Far-Infrared Luminous Supernova Remnant Kes 17

远红外发光超新星遗迹 Kes 17

• DOI: 10.1088/0004-637x/740/1/31
• 发表时间: 2011
• 期刊: Astrophysical Journal
• 影响因子: 4.9
• 作者: Lee;Ho-Gyu;他6名;7番
• 通讯作者: 7番