Spitzer Spectroscopy of Ices: From Molecular Cores to Planet-Forming Disks
- Creators
- Boogert, A. C. A.
- c2d Spitzer Legacy Team
- Others:
- Armus, L.
- Reach, W. T.
Abstract
Icy grain mantles are a major reservoir of the molecular inventory of dense clouds and circumstellar envelopes and disks. The ice abundances and in particular the dependence of abundances on the astrophysical environment are still poorly characterized. Numerous physical and chemical processes may modify the ices in the evolutionary sequence from dense cores to planet-forming disks. Using Spitzer/IRS and ground-based thermal infrared spectrometers we determine the ice inventory toward low mass protostars and address questions on evolutionary scenarios. The initial results from our Spitzer Legacy program "From Molecular Cores to Planet-Forming Disks" (c2d) indicate that ice abundances relative to H_2O commonly vary by factors of 2–5 in different sight-lines. For some species (CO) outgassing is likely responsible, but for others (CH_3OH, CO_2, NH_3) different factors, such as cloud history, must be involved.
Additional Information
© 2006 Astronomical Society of the Pacific.Attached Files
Published - Boogert2006p9085Spitzer_Space_Telescope_New_Views_Of_The_Cosmos.pdf
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Additional details
- Eprint ID
- 21923
- Resolver ID
- CaltechAUTHORS:20110128-145856036
- Created
-
2011-02-09Created from EPrint's datestamp field
- Updated
-
2019-10-03Created from EPrint's last_modified field
- Caltech groups
- Infrared Processing and Analysis Center (IPAC)
- Series Name
- ASP Conference Series
- Series Volume or Issue Number
- 357