@inproceedings{oai:jaxa.repo.nii.ac.jp:00003101,
 author = {松永, 典之 and Matsunaga, Noriyuki},
 book = {宇宙航空研究開発機構特別資料, JAXA Special Publication: The Cosmic Wheel and the Legacy of the AKARI archive: from galaxies and stars to planets and life},
 month = {Mar},
 note = {第4回「あかり」国際会議 (2017年10月17-20日. 東京大学), 文京区, 東京, The 4th AKARI International Conference: The Cosmic Wheel and the Legacy of the AKARI archive: from galaxies and stars to planets and life (October 17-20, 2017. The University of Tokyo), Bunkyo-ku, Tokyo, Japan, The AKARI/IRC color combining the S9W and L18W bands is useful for distinguishing between oxygen-rich and carbon-rich circumstellar dust. Ishihara and collaborators found in 2011 that this color, used together with the near-IR color J - K(sub s), can be used to classify two groups of dust-enshrouded stars with different chemistry. They investigated the distributions of such dusty AGB stars in the Galaxy and found that those with oxygen-rich dust are more centrally concentrated. While this is consistent with previous studies, the map in Ishihara et al. shows that carbon-rich stars are also present in the Galactic bulge for which almost no carbon-rich stars were reported before. Here we focus on Mira variables whose distances can be well constrained based on the period-luminosity relation. Among some candidates of carbon-rich Miras selected by the AKARI color, we confirmed at least four carbon-rich Miras within the bulge with their optical spectra. This gives a new insight into the complicated nature of stellar populations in the bulge., 形態: カラー図版あり, Physical characteristics: Original contains color illustrations, 資料番号: AA1730026027, レポート番号: JAXA-SP-17-009E},
 pages = {167--170},
 publisher = {宇宙航空研究開発機構(JAXA), Japan Aerospace Exploration Agency (JAXA)},
 title = {AKARI color useful for classifying chemical types of Miras},
 volume = {JAXA-SP-17-009E},
 year = {2018}
}