A search for interstellar gas-phase CO2 gas: Solid state abundance ratios

E.F. VanDishoeck; F.P. Helmich; T. DeGraauw; J.H. Black; A.C.A. Boogert; P. Ehrenfreund; P.A. Gerakines; J.H. Lacy; TJ Millar; W.A. Schutte; A.G.G.M. Tielens; D.C.B. Whittet; D.R. Boxhoorn; D.J.M. Kester; K. Leech; P.R. Roelfsema; A. Salama; B. Vandenbussche

A search for interstellar gas-phase CO2 gas: Solid state abundance ratios

E.F. VanDishoeck, F.P. Helmich, T. DeGraauw, J.H. Black, A.C.A. Boogert, P. Ehrenfreund, P.A. Gerakines, J.H. Lacy, TJ Millar, W.A. Schutte, A.G.G.M. Tielens, D.C.B. Whittet, D.R. Boxhoorn, D.J.M. Kester, K. Leech, P.R. Roelfsema, A. Salama, B. Vandenbussche

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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.

Original language	English
Pages (from-to)	L349-L352
Number of pages	4
Journal	Astronomy and Astrophysics
Volume	315
Publication status	Published - 1996

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VanDishoeck, E. F., Helmich, F. P., DeGraauw, T., Black, J. H., Boogert, A. C. A., Ehrenfreund, P., Gerakines, P. A., Lacy, J. H., Millar, TJ., Schutte, W. A., Tielens, A. G. G. M., Whittet, D. C. B., Boxhoorn, D. R., Kester, D. J. M., Leech, K., Roelfsema, P. R., Salama, A., & Vandenbussche, B. (1996). A search for interstellar gas-phase CO2 gas: Solid state abundance ratios. Astronomy and Astrophysics, 315, L349-L352.

@article{adee0b75c1b3420ab1bb0f3dac85347f,

title = "A search for interstellar gas-phase CO2 gas: Solid state abundance ratios",

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.",

author = "E.F. VanDishoeck and F.P. Helmich and T. DeGraauw and J.H. Black and A.C.A. Boogert and P. Ehrenfreund and P.A. Gerakines and J.H. Lacy and TJ Millar and W.A. Schutte and A.G.G.M. Tielens and D.C.B. Whittet and D.R. Boxhoorn and D.J.M. Kester and K. Leech and P.R. Roelfsema and A. Salama and B. Vandenbussche",

year = "1996",

language = "English",

volume = "315",

pages = "L349--L352",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

}

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, B 1996, 'A search for interstellar gas-phase CO2 gas: Solid state abundance ratios', Astronomy and Astrophysics, vol. 315, pp. L349-L352.

TY - JOUR

T1 - A search for interstellar gas-phase CO2 gas: Solid state abundance ratios

AU - VanDishoeck, E.F.

AU - Helmich, F.P.

AU - DeGraauw, T.

AU - Black, J.H.

AU - Boogert, A.C.A.

AU - Ehrenfreund, P.

AU - Gerakines, P.A.

AU - Lacy, J.H.

AU - Millar, TJ

AU - Schutte, W.A.

AU - Tielens, A.G.G.M.

AU - Whittet, D.C.B.

AU - Boxhoorn, D.R.

AU - Kester, D.J.M.

AU - Leech, K.

AU - Roelfsema, P.R.

AU - Salama, A.

AU - Vandenbussche, B.

PY - 1996

Y1 - 1996

N2 - 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.

AB - 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.

M3 - Article

SN - 0004-6361

VL - 315

SP - L349-L352

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

ER -

A search for interstellar gas-phase CO2 gas: Solid state abundance ratios

Abstract

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