@inproceedings{oai:jaxa.repo.nii.ac.jp:00003026, author = {Justtanont, Kay and Teyssier, David and Barlow, Mike and 松浦, 美香子 and Swinyard, Bruce and Waters, L. B. F. M. and Yates, Jeremy and Justtanont, Kay and Teyssier, David and Barlow, Mike and Matsuura, Mikako and Swinyard, Bruce and Waters, L. B. F. M. and Yates, Jeremy}, 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, Observations by Herschel Space Observatory of extreme OH/IR stars indicate that these objects currently undergo a phase of very high mass loss - superwind. We derived relatively low 12C/13C ratios which is indicative of the hot-bottom burning process. Further evidence from the observed oxygen isotopes (16O/17O/18O) also support this idea. We conclude that these stars are massive (M greater than or equal to 5 solar mass) AGB stars. With SPICA-SAFARI, it will be possible to observe these isotopic ratios in a number of these stars as they contribute significant gas and dust mass return to the interstellar medium of our galaxy., 形態: カラー図版あり, Physical characteristics: Original contains color illustrations, 資料番号: AA1730027049, レポート番号: JAXA-SP-17-010E}, pages = {231--234}, publisher = {宇宙航空研究開発機構(JAXA), Japan Aerospace Exploration Agency (JAXA)}, title = {Evidence of Hot-Bottom-Burning in Extreme OH/IR Stars}, volume = {JAXA-SP-17-010E}, year = {2018} }