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ISO results on circumstellar envelopes

Published online by Cambridge University Press:  25 May 2016

M. J. Barlow
M. J. Barlow*
Affiliation:
Dept. of Physics & Astronomy, University College London, Gower St., London WC1E 6BT, U.K.

Abstract

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This review covers spectroscopic results obtained with ISO on molecular and atomic line emission from the circumstellar envelopes of oxygen-rich AGB stars and post-AGB objects and from cool supergiant stars. As well as the SWS detection of the 4.27-μm CO2 band in absorption and emission from cool star envelopes, several new emission bands which have been detected in SWS spectra between 13.9 and 16.2 μm have been identified with CO2 bands. Strong H2O line emission has been observed in the LWS and SWS spectra of high mass loss rate O-rich AGB and M supergiant stars, confirming the predicted importance of this molecule as a coolant in their outflows. The proposed infrared radiative pump mechanism for circumstellar OH masers has been directly confirmed for the first time via measurements for several stars of the OH infrared pumping lines between 34.6 μm and 163 μm. Water vapour emission lines are not present in the spectra of O-rich post-AGB objects, having been replaced by broad emission features at 43 and 62 μm due to crystalline water ice that has condensed in the very cool outflows.

Type
Part 4. Circumstellar Envelopes
Information
Symposium - International Astronomical Union , Volume 191: Asymptotic Giant Branch Stars , 1999 , pp. 353 - 362
Copyright
Copyright © Astronomical Society of the Pacific 1999 

References

Aoki, W., Tsuji, T., Ohnaka, K., 1998, A&A 333, L19 Google Scholar
Barlow, M.J., 1998a, Ap&SS 251, 15 Google Scholar
Barlow, M.J., 1998b, Ap&SS 255, 315 Google Scholar
Barlow, M.J., Nguyen-Q-Rieu, , et al., 1996, A&A 315, L241 Google Scholar
Bertie, J.E., Whalley, E., 1967, J. Chem. Phys. 46, 1271 Google Scholar
Cernicharo, J., 1998, Ap&SS 255, 303 Google Scholar
Chen, W., Neufeld, D., 1995, ApJ 453, L99 Google Scholar
Deguchi, S., Nguyen-Q-Rieu, , 1990, ApJ 360, L27 CrossRefGoogle Scholar
Elitzur, M., Goldreich, P., Scoville, N., 1976, ApJ 205, 384 Google Scholar
Forveille, T., Morris, M., Omont, A., Likkel, L., 1987, A&A 176, L13 Google Scholar
Glassgold, A.E., Huggins, P.J., 1986, ApJ 306, 605 Google Scholar
Haas, M.R., Glassgold, A.E., 1993, ApJ 410, L111 Google Scholar
Haas, M.R., Glassgold, A.E., Tielens, A.G.G.M., 1995, ASP Conf. Ser. 73, 397 Google Scholar
Haniff, C.A., Scholz, M., Tuthill, P.G., 1995, MNRAS 276, 640 CrossRefGoogle Scholar
Huggins, P.J., Glassgold, A.E., 1982, AJ 87, 1828 Google Scholar
Justtanont, K., de Jong, T., et al., 1996, A&A 315, L217 Google Scholar
Justtanont, K., Feuchtgruber, H., de Jong, T., Cami, J., Waters, L.B.F.M., Yamamura, I., Onaka, T., 1998, A&A 330, L17 Google Scholar
Moore, H.H., Ferrante, R.F., Hudson, R.L., Nuth, J.A., Donn, B., 1994, ApJ 428, L81 Google Scholar
Neufeld, D.A., Chen, W., et al., 1996 A&A 315, L237 Google Scholar
Omont, A., et al., 1990, ApJ 355, L27 Google Scholar
Rodgers, B, Glassgold, A.E., 1991, ApJ 382, 606 Google Scholar
Smith, R.G., Robinson, G., Hyland, A.R., Carpenter, G.L., 1994, MNRAS 271, 481 Google Scholar
Sylvester, R.J., 1998, in ‘Solid Interstellar Matter - the ISO Revolution’, ed. Jones, A.P., Joblin, C. and d'Hendecourt, L., Editions Frontières, in press Google Scholar
Sylvester, R.J., Barlow, M.J., Skinner, C.J., 1994, MNRAS 266, 640 Google Scholar
Sylvester, R.J., Barlow, M.J., et al., 1997, MNRAS 291, L42 Google Scholar
Thai-Q-Tung, , Dinh-V-Trung, , Nguyen-Q-Rieu, , Bujarrabal, V., Le Bertre, T., Gérard, E., 1998, A&A 331, 317 Google Scholar
Truong-Bach, , et al., Ap&SS 255, 325 Google Scholar
Tsuji, T., Ohnaka, K., Aoki, W., Yamamura, I., 1997, A&A 320, L1 Google Scholar
Tsuji, T., Ohnaka, K., Aoki, W., Yamamura, I., 1998, Ap&SS 255, 293 Google Scholar
Waters, L.B.F.M., et al., 1996, A&A 315, L361 Google Scholar