@inproceedings{oai:jaxa.repo.nii.ac.jp:00003030, author = {中村, 友彦 and 宮田, 隆志 and 酒向, 重行 and 上塚, 貴史 and 浅野, 勝晃 and 内山, 瑞穂 and 尾中, 敬 and 板, 由房 and 米田, 瑞生 and 片坐, 宏一 and Nakamura, Tomohiko and Miyata, Takashi and Sako, Shigeyuki and Kamizuka, Takafumi and Asano, Katsuaki and Uchiyama, Mizuho and Onaka, Takashi and Ita, Yoshifusa and Yoneda, Mizuki and Kataza, Hirokazu}, book = {宇宙航空研究開発機構特別資料, JAXA Special Publication: Proceedings of the SPICA Science Conference from Exoplanets to Distant Galaxies: SPICA's New Window on the Cool Universe}, month = {Mar}, note = {SPICA Science Conference from Exoplanets to Distant Galaxies: SPICA's New Window on the Cool Universe (June 18-21, 2013. Ito Hall, the University of Tokyo), Bunkyou-ku, Tokyo, Japan, We present a result of high-resolution 30 μm imaging observations of the Homunculus Nebula of Eta Carinae (η Car). The Homunculus Nebula is known to contain a large amount of cool dust (approximately 100 K) at polar lobes and a equatorial torus. While the distribution of the cool dust shows the past dust formation events on Car such as giant eruptions and binary interactions, no spatially resolved images at long mid-infrared wavelengths (30-50 μm) have been obtained. We observed Car with a mid-infrared camera MAX38 on the University of Tokyo Atacama 1.0-m telescope, and successfully obtained spatially resolved images of the Homunculus Nebula at 18.7, 31.7 and 37.3 μm. The observations revealed the structure of the massive equatorial torus which contains the dust of 0.09 solar mass. This amount is equal to approximately 80% of the total dust mass 0.12 solar mass in the Homunculus Nebula. It is also found that the dust of 0.012 solar mass exists inside the polar lobes. Assuming that the dust was constantly formed after the giant eruption occurred in 1843, the dust formation rate is estimated as 7 × 10(exp -5)solar mass yr(exp -1). This indicates that the binary interaction plays a significant role in the dust formation on Car., 著者人数: 29名, 形態: カラー図版あり, Number of authors: 29, Physical characteristics: Original contains color illustrations, 資料番号: AA1730027053, レポート番号: JAXA-SP-17-010E}, pages = {249--251}, publisher = {宇宙航空研究開発機構(JAXA), Japan Aerospace Exploration Agency (JAXA)}, title = {High Resolution 30 micro m Imaging of the Homunculus Nebula of Eta Carinae}, volume = {JAXA-SP-17-010E}, year = {2018} }