AKARI observation of interstellar ice
| Project/Area Number |
19740103
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Astronomy
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| Research Institution | Kobe University |
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Principal Investigator |
AIKAWA Yuri 神戸大学, 理学研究科, 准教授 (40324909)
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| Project Period (FY) |
2007 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥2,680,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥480,000)
Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2009: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2008: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2007: ¥600,000 (Direct Cost: ¥600,000)
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| Keywords | 星間物質 / 赤外線天文学 / 天文学 / 星間化学 / 星形成 / 分子雲 |
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| Research Abstract |
We performed spectroscopic observation towards (1) edge-on YSOs and (2) field stars behind the molecular clouds at 2-5 micron with the resolution of δλ/λ~100. AKARI can observe ice bands which cannot be observed from the ground, such as 4micron CO_2 band. We have detected H_2O, CO_2 and CO ice absorptions. The CO_2/H_2O ratio is consistent with the previous studies which used CO2 band at longer wavelength. We also detected strong absorption which coincides with XCN band towards edge-on YSOs. It could be formed by photolysis via UV radiation from YSO. Towards the molecular cloud L1517A, we derived spectrum towards more than 10 field stars. We show that H_2O column density correlate well with extinction (Av).
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Report
(6 results)
Research Products
(33 results)
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[Journal Article] AKARI observations of ice absorption bands towards edge-on young stellar object2012
Author(s)
Aikawa, Y., Kamuro, D., Sakon, I., Itoh, Y., Terada, H., Noble, J. A., Pontoppidan, K. M., Fraser, H. J., Tamura, M., Kandori, R., Kawamura, A., Ueno, M.
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Journal Title
Astronomy & Astrophysic
Volume: 538
Pages: 57-68
Related Report
Peer Reviewed
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[Journal Article] AKARI observations of ice absorption bands towards edge-on young stellar objects2012
Author(s)
Aikawa, Y., Kamuro, D., Sakon, L., Itoh, Y., Terada, H., Noble, J.A., Pontoppidan, K.M., Fraser, H.J., Tamura, M., Kandori, R., Kawamura, A., Ueno, M.
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Journal Title
Astronomy and Astrophysics
Volume: 538
Pages: 57-68
Related Report
Peer Reviewed
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[Journal Article] Observation of interstellar and circumstellar ice2009
Author(s)
Aikawa, Y., Noble, J. A., Sakon, I., Kamuro, D., Irimichi, N., Pontoppidan, K. M., Fraser, H., Tamura, M., Terada, H.; Ueno, M. and AFSAS Team
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Journal Title
Astronomical Society of the Pacific, Cenference Serie
Volume: 418
Pages: 47-54
Related Report
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