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Title: A search for interstellar gas-phase CO2 gas: Solid state abundance ratios
Authors: vanDishoeck, EF ×
Helmich, FP
deGraauw, T
Black, JH
Boogert, ACA
Ehrenfreund, P
Gerakines, PA
Lacy, JH
Millar, TJ
Schutte, WA
Tielens, AGGM
Whittet, DCB
Boxhoorn, DR
Kester, DJM
Leech, K
Roelfsema, PR
Salama, A
Vandenbussche, Bart #
Issue Date: Nov-1996
Publisher: Springer verlag
Series Title: Astronomy and astrophysics vol:315 issue:2 pages:L349-L352
Abstract: We present searches for gas-phase CO2 features in the ISO-SWS infrared spectra of four deeply embedded massive young stars, which all show strong solid CO2 absorption. The abundance of gas-phase CO2 is at most 2. 10(-7) with respect to H-2, and is less than 5% of that in the solid phase. This is in strong contrast to CO, which is a factor of 10-100 more abundant in the gas than in solid form in these objects. The gas/solid state ratios of CO2, CO and H2O are discussed in terms of the physical and chemical state of the clouds.
URI: 
ISSN: 0004-6361
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Institute of Astronomy
× corresponding author
# (joint) last author

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