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Probing Protoplanetary Disks with Silicate Emission: Where is the silicate emission zone?
J. E. Kessler-Silacci, C. P. Dullemond, J. -C. Augereau +6
Recent results indicate that the grain size and crystallinity inferred from observations of silicate features may be correlated with spectral type of the central star and/or disk g…
Infrared Molecular Starburst Fingerprints in Deeply Obscured (U)LIRG Nuclei
F. Lahuis, H. W. W. Spoon, A. G. G. M. Tielens +6
High resolution spectra of the Spitzer Space Telescope show vibration-rotation absorption bands of gaseous C2H2, HCN, and CO2 molecules toward a sample of deeply obscured (U)LIRG n…
The Spitzer c2d survey of Large, Nearby, Interstellar Clouds. V. Chamaeleon II Observed with IRAC
Alicia Porras, Jes K. Jørgensen, Lori E. Allen +19
We present IRAC (3.6, 4.5, 5.8, and 8.0 micron) observations of the Chamaeleon II molecular cloud. The observed area covers about 1 square degree defined by . Analysis of t…
Effects of CO2 on H2O band profiles and band strengths in mixed H2O:CO2 ices
Karin I. Oberg, Helen J. Fraser, A. C. Adwin Boogert +4
H2O is the most abundant component of astrophysical ices. In most lines of sight it is not possible to fit both the H2O 3 um stretching, the 6 um bending and the 13 um libration ba…
SCUBA Mapping of Spitzer c2d Small Clouds and Cores
C. H. Young, T. L. Bourke, K. E. Young +6
We present submillimeter observations of dark clouds that are part of the Spitzer Legacy Program, From Molecular Cores to Planet-Forming Disks (c2d). We used the Submillimetre Comm…
The Water Vapor Abundance in Orion KL Outflows
J. Cernicharo, J. R. Goicoechea, F. Daniel +7
We present the detection and modeling of more than 70 far-IR pure rotational lines of water vapor, including the 18O and 17O isotopologues, towards Orion KL. Observations were perf…