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Aikawa, Y.; Noble, J. A.; Sakon, I.; Kamuro, D.; Irimichi, N.; Pontoppidan, K.M.; Fraser, H.; Tamura, M.; Terada, H. and Ueno, M.
(2009).
Abstract
We observed ice absorption bands at NIR (2.5 μm–5.0 μm) towards field stars behind molecular clouds and low-mass YSOs with edge-on disk. We developed and tested a procedure to reduce the slitless spectroscopy data of extended object and the data with multiple objects in one field of view. Absorption bands of H2O, CO2 and CO are clearly detected towards field stars and YSOs. The spectral type and visual extinction of each field star are estimated using color-color diagram. The visual extinction of our field stars ranges from 15 mag to 25 mag. The column density of H2O ice towards our target stars ranges from 3×1017 cm-2 to 1×1019 cm-2, while the CO2 ice column density is (1–7)×1017 cm-2. These ice column densities are found to be roughly proportional to visual extinction.
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About
- Item ORO ID
- 37259
- Item Type
- Book Section
- ISBN
- 1-58381-716-6, 978-1-58381-716-2
- Extra Information
-
Proceedings of a conference held at Fukutake Hall, The University of Tokyo, Tokyo, Japan 16–19 February 2009
Additional author information: "and the AFSAS team" - Academic Unit or School
-
Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM) - Copyright Holders
- © 2009 Astronomical Society of the Pacific
- Related URLs
- Depositing User
- Stephen Serjeant