Circumstellar molecular envelopes of AGB and post-AGB objects

Astrophysics and Space Science

Volumn 245, Issue 2, 1996, Pages 169-200

  Olofsson, Hans ^a  

^a STOCKHOLM OBSERVATORY   (Sweden)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0000801738     PISSN: 0004640X     EISSN: None     Source Type: Journal    
DOI: 10.1007/BF00642225     Document Type: Review

References (236)

1. Alcock C.R. and Ross R.R. 1986, Astrophys. J. 305, 837
2. Alcolea J. and Bujarrabal V. 1991, Astron. Astrophys. 245, 499
3. Alcolea J. and Bujarrabal V. 1995, Astron. Astrophys. 303, L21
4. Alcolea J., Bujarrabal V. and Gómez-González J. 1990, Astron. Astrophys. 231, 431
5. Alcolea J., Bujarrabal V. and Sanchez Contreras C. 1996, Astron. Astrophys, in press
6. Asida S.M. and Tuchman Y. 1995, Astrophys. J. 455, 286
7. Audinos P., Kahane C. and Lucas R. 1994, Astron. Astrophys. 287, L5
8. Bacchiller R., Gómez-González J., Bujarrabal V. and Martín-Pintado J. 1988, Astron. Astrophys. 196, L5
9. Bachiller R., Bujarrabal V., Martín-Pintado J. and Gómez-González J. 1989a, Astron. Astrophys. 218, 252
10. Bachiller R., Planesas P., Martín-Pintado J., Bujarrabal V. and Tafalla M. 1989b, Astron. Astrophys. 210, 366
11. Bachiller R., Huggins P.J., Cox P. and Forveille T. 1991, Astron. Astrophys. 247, 525
12. Bachiller R., Huggins P.J., Martín-Pintado J. and Cox P. 1992, Astron. Astrophys. 256, 231
13. Bachiller R., Huggins P.J., Cox P. and Forveille T. 1993, Astron. Astrophys. 267, 177
14. Bachiller R., Huggins P.J., Cox P. and Forveille T. 1994, Astron. Astrophys. 281, L93
15. Barnbaum C. Kastner J.H. and Zuckerman B. 1991, Astron. J. 102, 289
16. Barvainis R. and Clemens D.P. 1984, Astron. J. 89, 1833
17. Benson P.J., Little-Marenin I., Woods T.C., et al. 1990, Astrophys J. Suppl. Ser. 74, 911
18. Bergman P., Carlström U. and Olofsson H. 1993, Astron. Astrophys. 268, 685
19. Bergman P., Olofsson H. and Bieging J.H. 1996, in prep
20. Bieging J.H., Wilner D. and Thronson Jr. H.A. 1991, Astrophys. J. 379, 271
21. Bieging J.H. and Tafalla M. 1993, Astron. J. 105, 576
22. Bieging J.H. and Latter W.B. 1994, Astrophys. J. 422, 765
23. Bieging J.H. and Nguyen-Q-Rieu 1996, Astron. J., in press
24. Blommaert J.A.D.L., Van Langevelde H.J. and Michiels W.F.P. 1994, Astron. Astrophys. 287, 479
25. Bohlin R.C., Savage B.D. and Drake J.F. 1978, Astrophys. J. 224, 132
26. Bond H.E. and Livio M. 1990, Astrophys. J. 355, 568
27. Bowen G.H. 1988, Astrophys. J. 329, 299
28. Bowers P.F. 1992, Astrophys J. Letters 390, L27
29. Bowers P.F. and Johnston K.J. 1990, Astrophys. J. 354, 676
30. Bowers P.F. and Johnston K.J. 1994, Astrophys J. Suppl. Ser. 92, 189
31. Bowers P.F. and Knapp G.R. 1987, Astrophys. J. 315, 305
32. Bowers P.F. and Knapp G.R. 1988, Astrophys. J. 332, 299
33. Bowers P.F., Johnston K.J. and Spencer J.H. 1983, Astrophys. J. 274, 733
34. Bowers P.F., Johnston K.J. and de Vegt C. 1989, Astrophys. J. 340, 479
35. Bowers P.P., Claussen M.J. and Johnston K.J. 1993, Astron. J. 105, 284
36. Bujarrabal V. 1994a, Astron. Astrophys. 285, 953
37. Bujarrabal V. 1994b, Astron. Astrophys. 285, 971
38. Bujarrabal V. and Alcolea J. 1991, Astron. Astrophys. 251, 536
39. Bujarrabal V., Planesas P., Gómez-González J., Martín-Pintado J. and del Romero A. 1986, Astron. Astrophys. 162, 157
40. Bujarrabal V., Gómez-González J., Bachiller R. and Martín-Pintado J. 1988, Astron. Astrophys. 204, 242
41. Bujarrabal V., Alcolea J. and Planesas P. 1992, Astron. Astrophys. 257, 701
42. Bujarrabal V., Alcolea J., Neri R. and Grewing M. 1994, Astrophys J. Letters 436, L169
43. Bujarrabal V., Alcolea J., Neri R. and Grewing M. 1996, Astron. Astrophys., in press
44. Carlstrom J.E., Welch W.J., Goldsmith P.F. and Lis B.C. 1990, Astron. J. 100, 213
45. Cernicharo J., Guélin M., Martín-Pintado J., Penalver J. and Mauersberger R. 1989, Astron. Astrophys. 222, L1
46. Cernicharo J., Brunswig W., Pauber G. and Liechti S. 1994, Astrophys J. Letters 423, L143
47. Chapman J.M., Cohen R.J. and Saikia D.J. 1991, Monthly Notices of the RAS 249, 227
48. Chapman J.M., te Lintel Hekkert P. and Killeen N.E.B. 1993, in Astrophysical Masers, eds A.W. Clegg and G.E. Nedoluha, (Springer-Verlag, New York), p. 349
49. Chapman J.M., Sivagnanam P., Cohen R.J. and Le Squeren A.M. 1994, Monthly Notices of the RAS 268, 475
50. Charnley S.B., Tielens A.G.G.M. and Kress M.E. 1995, Monthly Notices of the RAS 274, 153
51. Chen W. and Neufeld D.A. 1995, Astrophys J. Letters 453, L99
52. Chengalur J.N., Lewis B.M., Eder J. and Terzian Y. 1993, Astrophys J. Suppl. Ser. 89, 189
53. Cherchneff I. and Glassgold A.E. 1993, Astrophys J. Letters 419, L41
54. Cherchneff I., Glassgold A.E. and Mamon G.A. 1993, Astrophys. J. 410, 188
55. Cho S-H., Kaifu N. and Ukita N. 1996, Astron. Astrophys. Suppl. 115, 117
56. Cooke B. and Elitzur M. 1985, Astrophys. J. 295, 175
57. Colomer F., Graham D.A., Krichbaum T.P., et al. 1992, Astron. Astrophys. 254, L17
58. Colomer F., Baudry A., Graham D.A., et al. 1996, Astron. Astrophys, in press
59. Cox P., Huggins P.J., Bachiller R. and Forveille T. 1991, Astron. Astrophys. 250, 533
60. Cox P., Omont A., Huggins P.J., Bachiller R. and Forveille T. 1992, Astron. Astrophys. 266, 420
61. Cuntz M. and Muchmore D.O. 1994, Astrophys. J. 433, 303
62. Dayal A. and Bieging J.H. 1995, Astrophys. J. 439, 996
63. Deguchi S., Izumiura H., Nguyen-Q-Rieu, Shibata K.M., Ukita N. and Yamamura I. 1992, Astrophys. J. 392, 597
64. Diamond P.J. and Nyman L-Å. 1988, in The Impact of VLBI on Astrophysics and Geophysics, eds M.J. Reid and J.M. Moran, (Kluwer, Dordrecht), p. 253
65. Diamond P.J., Norris R., Rowland P., Booth R. and Nyman L-Å. 1985, Monthly Notices of the RAS 212, 1
66. Diamond P.J., Kemball A.J., Junor W., Zensus A., Benson J. and Dhawan V. 1994, Astrophys J. Letters 430, L61
67. Doel R.C., Gray M.D., Humphreys E.M.L., Braithwaite M.F. and Field D. 1995, Astron. Astrophys. 302, 797
68. Dorfi E.A. and Höfner S. 1996, Astron. Astrophys, in press
69. Eder J., Lewis B.M. and Terzian Y. 1988, Astrophys J. Suppl. Ser. 66, 183
70. Egan M.P. and Leung C.M. 1995, Astrophys. J. 444, 251
71. Elitzur M. and Bujarrabal V. 1996, Astron. Astrophys. 308, 330
72. Engels D. and Lewis B.M. 1996, Astron. Astrophys. Suppl. 116, 117
73. Fleischer A.J., Gauger A. and Sedlmayr E. 1992, Astron. Astrophys. 266, 321
74. Forveille T. and Huggins P.J. 1991, Astron. Astrophys. 248, 599
75. Gail H.P. and Sedlmayr E. 1987, Astron. Astrophys. 171, 197
76. Galt J.A., Kwok S. and Frankow J. 1989, Astron. J. 98, 2182
77. Gammie C.F., Knapp G.R., Young K., Phillips T.G. and Falgarone E. 1989, Astrophys J. Letters 345, L87
78. Gensheimer P.D., Likkel L. and Snyder L.E. 1995, Astrophys. J. 439, 445
79. Glassgold A.E. and Huggins P.J. 1983, Monthly Notices of the RAS 203, 517
80. Glassgold A.E., Mamon G.A., Omont A. and Lucas R. 1987, Astron. Astrophys. 180, 183
81. Goldreich P. and Keeley D.A. 1972, Astrophys. J. 174, 517
82. Graham J.R., Serabyn E., Herbst T.M., et al. 1993, Astron. J. 105, 250
83. Greenhill L.J., Colomer F., Moran J.M., Backer B.C., Danchi W.C. and Bester M. 1995, Astrophys. J. 449, 365
84. Groenewegen M. 1994a, Astron. Astrophys. 290, 531
85. Groenewegen M. 1994b, Astron. Astrophys. 290, 544
86. Groenewegen M., Baas F., de Jong T. and Loup C. 1996, Astron. Astrophys. 306, 241
87. Guélin M., Lucas R. and Cernicharo J. 1993, Astron. Astrophys. 280, L19
88. Guélin M., Lucas R. and Neri R. 1996, in IAU Symposium 170: CO:Twenty-five Years of Millimetre-wave Spectroscopy, (Kluwer, Dordrecht), in press
89. Haas M.R. and Glassgold A.E. 1993, Astrophys J. Letters 410, L111
90. Habing H.J., Tignon J. and Tielens A.G.G.M. 1994, Astron. Astrophys. 286, 523
91. Haikala L.K. 1990, Astron. Astrophys. Suppl. 85, 875
92. Haikala L.K., Nyman L-Å. and Forsström V. 1994, Astron. Astrophys. Suppl. 103, 107
93. Hajian A.R., Phillips J.A. and Terzian Y. 1995 Astrophys. J. 446, 244
94. Harpaz A. and Soker N. 1994, Monthly Notices of the RAS 270, 734
95. Healy A.P. and Huggins P.J. 1990, Astron. J. 100, 511
96. Herman J., Baud B., Habing H.J. and Winnberg A. 1985, Astron. Astrophys. 143, 122
97. Heske A., te Lintel Hekkert P. and Maloney P.R. 1989, Astron. Astrophys. 218, L5
98. Heske A., Forveille T., Omont A., van der Veen W.E.C.J. and Habing H.J. 1990, Astron. Astrophys. 239, 173
99. Howe D.A., Hartquist T.W. and Williams D.A. 1994, Monthly Notices of the RAS 271, 811
100. Hu J.Y., te Lintel Hekkert P., Slijkhuis S., Baas F., Sahai R. and Wood P.R. 1994, Astron. Astrophys. Suppl. 103, 301
101. Huggins P.J. and Glassgold A.E. 1982, Astrophys. J. 252, 201
102. Huggins P.J., Olofsson H. and Johansson L.E.B. 1988, Astrophys. J. 332, 1009
103. Huggins P.J., Bachiller R., Cox P. and Forveille T. 1992, Astrophys J. Letters 401, L43
104. Huggins P.J., Bachiller R., Cox P. and Forveille T. 1994, Astrophys J. Letters 424, L127
105. Huggins P.J., Bachiller R., Cox P. and Forveille T. 1996, Astron. Astrophys, in press
106. Höfner S. and Dorfi E.A. 1996, Astron. Astrophys., in press
107. Izumiura H., Deguchi S., Hashimoto O., et al. 1994, Astrophys. J. 437, 419
108. Izumiura H., Catchpole R., Deguchi S., et al. 1995a, Astrophys J. Suppl. Ser. 98, 271
109. Izumiura H., Deguchi S., Hashimoto O., et al. 1995b, Astrophys. J. 453, 837
110. Izumiura H., Ukita N. and Tsuji T. 1995c, Astrophys. J. 440, 728
111. Izumiura H., Waters L.B.F.M., de Jong T., Loup C., Bontekoe, Tj.R. and Kester D.J.M. 1996, Astron. Astrophys., in press
112. Jackson J.M. and Nguyen-Q-Rieu 1988, Astrophys J. Letters 335, L83
113. Jaminet P.A., Danchi W.C., Sutton E.G., et al. 1991, Astrophys. J. 380, 461
114. Jaminet P.A., Danchi W.C., Sandell G. and Sutton E.G. 1992, Astrophys. J. 400, 535
115. Jewell P.R., Snyder L.E., Walmsley C.M., Wilson T.L and Gensheimer P.D. 1991, Astron. Astrophys. 242, 211
116. Jura M. and Morris M. 1981, Astrophys. J. 251, 181
117. Jura M., Kahane C. and Omont A. 1988, Astron. Astrophys. 201, 80
118. Jura M., Balm S.P. and Kahane C. 1995, Astrophys. J. 453, 721
119. Justtanont K. and Tielens A.G.G.M. 1992, Astrophys. J. 389, 400
120. Justtanont K., Skinner C.J. and Tielens A.G.G.M. 1994, Astrophys. J. 435, 852
121. Justtanont K., Skinner C.J., Tielens A.G.G.M., Meixner M. and Baas F. 1996, Astrophys. J. 456, 337
122. Jørgensen U.G. and Johnson H.R. 1992, Astron. Astrophys. 265, 168
123. Kahane C. and Jura M. 1994, Astron. Astrophys. 290, 183
124. Kahane C. and Jura M. 1996, Astron. Astrophys. 310, 952
125. Kahane C., Audinos P., Barnbaum C. and Morris M. 1996, Astron. Astrophys, in press
126. Kastner J.H. 1992, Astrophys. J. 401, 337
127. Kastner J.H., Forveille T., Zuckerman B. and Omont A. 1993, Astron. Astrophys. 275, 163
128. Keene J., Young K., Phillips T.G., Büttgenbach T.H. and Carlstrom J.E. 1993, Astrophys J. Letters 415, L131
129. Kerschbaum F., Olofsson H. and Hron J. 1996, Astron. Astrophys. 311, 273
130. Knapp G.R. and Morris M. 1985, Astrophys. J. 292, 640
131. Knapp G.R., Sutin B.M., Phillips T.G., et al. 1989, Astrophys. J. 336, 822
132. Knapp G.R., Jorissen A. and Young K. 1996, in prep.
133. Krüger D., Gauger A. and Sedlmayr E. 1994, Astron. Astrophys. 290, 573
134. Kwan J. and Webster Z. 1993, Astrophys. J. 419, 674
135. Kwok S. 1975, Astrophys. J. 198, 583
136. Le Squeren A.M., Sivagnanam P., Dennefeld M. and David P. 1992, Astron. Astrophys. 254, 133
137. Leahy D.A., Kwok S. and Arquilla R.A. 1987, Astrophys. J. 320, 825
138. Lewis B.M. 1991, Astron. J. 101, 254
139. Lewis B.M. and Engels D. 1995, Monthly Notices of the RAS 274, 439
140. Lewis B.M., Eder J. and Terzian Y. 1990, Astrophys. J. 362, 634
141. Likkel L. 1989, Astrophys. J. 344, 350
142. Likkel L. and Morris M. 1988, Astrophys. J. 329, 914
143. Likkel L., Forveille T., Omont A. and Morris M. 1991, Astron. Astrophys. 246, 153
144. Likkel L., Morris M. and Maddalena R.J. 1992, Astron. Astrophys. 256, 581
145. Lindqvist M., Habing H.J. and Winnberg A. 1992a, Astron. Astrophys. 259, 118
146. Lindqvist M., Winnberg A., Habing H.J. and Matthews H.E. 1992b, Astron. Astrophys. Suppl. 92, 43
147. Lindqvist M., Lucas R., Olofsson H., Omont A., Eriksson K. and Gustafsson B. 1996a, Astron. Astrophys. 305, L57
148. Lindqvist M., Lucas R., Olofsson H., et al. 1996b, in prep.
149. Lockett P. and Elitzur M. 1992, Astrophys. J. 399, 704
150. Loup C., Forveille T., Nyman L-Å. and Omont A. 1990, Astron. Astrophys. 227, L29
151. Loup C., Forveille T., Omont A. and Paul J.F. 1993, Astron. Astrophys. Suppl. 99, 291
152. Lucas R. and Cernicharo J. 1989, Astron. Astrophys. 218, L20
153. Lucas R. and Guilloteau S. 1992, Astron. Astrophys. 259, L23
154. Lucas R., Bujarrabal V., Guilloteau S. et al., 1992, Astron. Astrophys. 262, 491
155. Lucas R., Guélin M., Kahane C., Audinos P. and Cernicharo J. 1995, in Circumstellar Matter 1994, eds G.D. Watt and P.M. Williams, (Kluwer, Dordrecht), p. 293
156. Mamon G.A., Glassgold A.E. and Omont A. 1987, Astrophys. J. 323, 306
157. Mamon G.A., Glassgold A.E. and Huggins P.J. 1988, Astrophys. J. 328, 797
158. Margulis M., Van Blerkom D.J., Snell R.L. and Kleinmann S.G. 1990, Astrophys. J. 361, 673
159. Martín-Pintado J. and Bachiller R. 1992, Astrophys J. Letters 391, L93
160. Martín-Pintado J., Gaume R.A., Johnston K.J. and Bachiller R. 1995, Astrophys. J. 446, 687
161. Millar T.J. 1988, in Rate Coefficients in Astrochemistry, eds T.J. Millar and D.A. Williams, (Kluwer, Dordrecht), p. 287
162. Millar T.J. and Herbst E. 1994, Astron. Astrophys. 288, 561
163. Miyoshi M., Matsumoto K., Kameno S., Takaba H. and Iwata T. 1994, Nature 371, 395
164. Morris M. 1993, in Mass Loss on the AGB and Beyond, ed. H. Schwarz, ESO Conference and Workshop Proceedings No. 46, p. 60
165. Nejad L.A.M. and Millar T.J. 1988, Monthly Notices of the RAS 230, 79
166. Nercessian E., Guilloteau S., Omont A. and Benayoun J.J. 1989, Astron. Astrophys. 210, 225
167. Netzer N. and Elitzur M. 1993, Astrophys. J. 410, 701
168. Neri R., Garcia-Burillo S., Guélin M., Cernicharo J., Guilloteau S. and Lucas R. 1992, Astron. Astrophys. 262, 544
169. Nguyen-Q-Rieu, Winnberg A. and Bujarrabal V. 1986, Astron. Astrophys. 165, 204
170. Nguyen-Q-Rieu, Epchtein N., Truong-Bach and Cohen M. 1987, Astron. Astrophys. 180, 117
171. Nyman L-Å., Booth R.S., Carlström R.S., et al. 1992, Astron. Astrophys. Suppl. 93, 121
172. Nyman L-Å., Hall P.J. and Le Bertre T. 1993a, Astron. Astrophys. 280, 551
173. Nyman L-Å., Olofsson H., Rogers C., Heske A. and Sahai R. 1993b, in Mass Loss on the AGB and Beyond, ed. H. Schwarz, ESO Conference and Workshop Proceedings No. 46, p. 451
174. Nyman L-Å., Hall P.J. and Olofsson H. 1997, Astron. Astrophys., subm.
175. Olofsson H. 1997, in IAU Symposium 178: Molecules in Astrophysics: Probes & Processes, ed. E.F. van Dishoeck, (Kluwer, Dordrecht), in press
176. Olofsson H., Carlström U. Eriksson K., Gustafsson B. and Willson L.A. 1990, Astron. Astrophys. 230, L13
177. Olofsson H., Eriksson K., Gustafsson B. and Carlström U. 1993a, Astrophys J. Suppl. Ser. 87, 267
178. Olofsson H., Eriksson K., Gustafsson B. and Carlström U. 1993b, Astrophys J. Suppl. Ser. 87, 305
179. Olofsson H., Bergman P., Eriksson K. and Gustafsson B. 1996, Astron. Astrophys. 311, 587
180. Omont A. 1988, in Reviews in Modern Astronomy, Vol. 1, Cosmic Chemistry, ed. G. Klare, (Springer, Berlin), p. 102
181. Pascoli G., Leclerco J. and Poulain B. 1992, Publ. Astron. Soc. Pacific 104, 182
182. Phillips J.P., Williams P.G., Mampaso A. and Ukita N. 1992, Astron. Astrophys. 260, 283
183. Pijpers F.P. and Habing H.J. 1989, Astron. Astrophys. 215, 334
184. Plez B. and Lambert D.L. 1994, Astrophys J. Letters 425, L101
185. Planesas P., Kenney J.D.P. and Bachiller R. 1990, Astrophys J. Letters 364, L9
186. Reid M.J. and Menten K.M. 1990, Astrophys J. Letters 360, L51
187. Sahai R. 1987, Astrophys. J. 318, 809
188. Sahai R. 1990, Astrophys. J. 362, 652
189. Sahai R. 1992, Astron. Astrophys. 253, L33
190. Sahai R. and Wannier P.G. 1988, Astron. Astrophys. 201, L9
191. Sahai R. and Bieging J.H. 1993, Astron. J. 105, 595
192. Sahai R. and Liechti S. 1995, Astron. Astrophys. 293, 198
193. Sahai R., Wootten A. and Clegg R.E.S. 1990, Astron. Astrophys. 234, L1
194. Sahai R., Wootten A., Schwarz H.E. and Clegg R.E.S. 1991, Astron. Astrophys. 251, 560
195. Sahai R., Wootten A., Schwarz H.E. and Wild W. 1994, Astrophys. J. 428, 237
196. Shibata K.M., Tamura S., Deguchi S., Hirano N., Kameya O. and Kasuga T. 1989, Astrophys J. Letters 345, L55
197. Sivagnanam P., Braz M.A., Le Squeren A.M. and Tran Minh F. 1990, Astron. Astrophys. 233, 112
198. Soker N. 1994, Publ. Astron. Soc. Pacific 106, 59
199. Spencer J.H., Johnston K.J., Moran J.M., Reid M.J. and Walker R.C. 1979, Astrophys. J. 230, 449
200. Stanek K.Z., Knapp G.R., Young K. and Phillips T.G. 1995, Astrophys J. Suppl. Ser. 100, 169
201. Szymczak M. and Engels D. 1995, Astron. Astrophys. 296, 727
202. Szymczak M., Le Squeren A.M., Sivagnanam P., Tran Minh F. and Fournier A. 1995, Astron. Astrophys. 297, 494
203. Takano S., Saito S. and Tsuji T. 1992, Publ. Astron. Soc. Japan 44, 469
204. te Lintel Hekkert P., Habing H.J., Caswell J.L, Norris R.P. and Haynes R.F. 1988, Astron. Astrophys. 202, L19
205. te Lintel Hekkert P., Caswell J.L, Habing H.J., Haynes R.F. and Norris R.P. 1991, Astron. Astrophys. Suppl. 90, 327
206. te Lintel Hekkert P., Chapman J.M. and Zijlstra A.A. 1992, Astrophys J. Letters 390, L23
207. Tielens A.G.G.M. 1983, Astrophys. J. 271, 702
208. Trams N.R., van der Veen W.E.G.J., Waelkens C., Waters L.B.F.M. and Lamers H.J.G.L.M. 1990, Astron. Astrophys. 233, 153
209. Truong-Bach, Morris D., Nguyen-Q-Rieu and Deguchi S. 1990, Astron. Astrophys. 230, 431
210. Truong-Bach, Morris D. and Nguyen-Q-Rieu 1991, Astron. Astrophys. 249, 435
211. Tsuji T. 1973, Astron. Astrophys. 23, 411
212. Turner B.E. 1987a, Astron. Astrophys. 182, L15
213. Turner B.E. 1987b, Astron. Astrophys. 183, L23
214. van der Veen W.E.C.J. and Rugers M. 1989, Astron. Astrophys. 226, 183
215. van der Veen W.E.C.J., Trams N.R. and Waters L.B.F.M. 1993, Astron. Astrophys. 269, 231
216. van der Veen W.E.C.J., Omont A., Habing H.J. and Matthews H.E. 1995, Astron. Astrophys. 295, 445
217. van Dishoeck E.F. 1988, in Rate Coefficients in Astrochemistry, eds T.J. Millar and D.A. Williams, (Kluwer, Dordrecht), p. 49
218. van Dishoeck E.F. and Black J. 1988, Astrophys. J. 334, 771
219. van Loon J., Zijlstra A.A., Bujarrabal V. and Nyman L-Å. 1996, Astron. Astrophys. 306, L29
220. Volk K., Kwok S. and Woodsworth A.W. 1993, Astrophys. J. 402, 292
221. Waters L.B.F.M., Loup C., Kester D.J.M., Bontekoe, Tj.R. and de Jong T. 1994, Astron. Astrophys. 281, L1
222. Welty A.D., Fix J.D. and Mutel R.L. 1987, Astrophys. J. 318, 852
223. Winnberg A., Lindqvist M., Olofsson H. and Henkel C. 1991, Astron. Astrophys. 245, 195
224. Wood P.R., Whiteoak J.B., Hughes S.M.G., Bessell M.S., Gardner F. and Hyland A.R. 1992, Astrophys. J. 397, 552
225. Wootten A., Nguyen-Q-Rieu and Truong-Bach 1994, Astron. Astrophys. 290, 198
226. Yamamura I., Shibata K.M., Kasuga T. and Deguchi S. 1994, Astrophys. J. 427, 406
227. Yamamura I., Onaka T., Kamijo F., Deguchi S. and Ukita N. 1995, Astrophys J. Letters 439, L13
228. Yamamura I., Onaka T., Kamijo F., Deguchi S. and Ukita N. 1996, Astrophys. J. 465, 926
229. Yates J.A. and Cohen R.J. 1994, Monthly Notices of the RAS 270, 958
230. Young K. 1995, Astrophys. J. 445, 872
231. Young K., Serabyn, G., Phillips T.G., Knapp G.R., Güsten R. and Schulz A. 1992, Astrophys. J. 385, 265
232. Young K., Phillips T.G. and Knapp G.R. 1993, Astrophys. J. 409, 725
233. Zell P.J. and Fix J.D. 1990, Astron. J. 99, 314
234. Zuckerman B. and Dyck H.M. 1986, Astrophys. J. 304, 394
235. Zuckerman B., Dyck H.M. and Claussen M.J. 1986, Astrophys. J. 304, 401
236. Zuckerman B. and Dyck H.M. 1989, Astron. Astrophys. 209, 119