Observational study of ice around extragalactic Young Stellar Objects with AKARI

Takashi Shimonishi1*, Takashi Onaka1, Daisuke Kato1, Itsuki Sakon1, Yoshifusa Ita2, Akiko Kawamura32, and Hidehiro Kaneda3
1Department of Astronomy, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0003, Japan
2TNational Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo, 181-8588, Japan
3Graduate School of Science, Nagoya University, Chikusa-ku, Nagoya, 464-8602, Japan

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Abstract

Ice around young stellar objects (YSOs) is thought to be an important reservoir of heavy elements, and they control the chemical evolution of circumstellar environments of YSOs. Properties of ice around extragalactic YSOs provide us important information on the understanding of the diversity of circumstellar materials in different galactic environments. In this paper, we present the current status of our observational study of ice around embedded YSOs in the Large Magellanic Cloud.

Fig. 1 Fig. 2


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Keywords : astrochemistry - circumstellar matter - ISM: abun-dances - ISM: molecules - Magellanic Clouds - infrared: ISM