Abstract
In a number of Proto-Planetary Nebulae (PPN) candidates maser emission has been found, most often from OH. Their properties are distinctively different from those in AGB stars, reflecting the change from a radially symmetric mass-loss process on the Asymptotic Giant Branch to other mostly axisymmetric geometries. Interferometric maps indicate that during the PPN stage, when a bipolar morphology develops, the OH masers are located in radial outflows associated with the equatorial disc. H2O masers can be associated with the dying superwind or with the newly developing bipolar outflows. SiO masers are rarely detected. Peculiar maser properties of IRAS sources with infrared colors similar to Mira variables and OH/IR stars can be used to pinpoint PPN in the making.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Bedijn P.J., 1987, A and A 186, 136
Bobrowsky M., Zijlstra A.A., Grebel E.K., et al., 1995, ApJ 446, L89
Davis L.E., Seaquist E.R., Purton C.R., 1979, AN 230, 434
Engels D., Schmid-Burgk J., Walmsley C.M., 1986, A and A 167, 129
Engels D., 1996, A and A 315, 521
Engels D., 1997, in IAU Symp. 180, Eds. H.J. Habing and J.G.L.M. Lamers, p. 348 Hrivnak B.J., Kwok S., Su K.YL., 1999, ApJ 524, 849
Hu J.Y., Slijkhuis S., Nguyen-Q-Rieu, de Jong T., 1993, A and A 273, 185
Hu J.Y., Te Lintel Hekkert E, Slijkhuis F., et al., 1994, A and AS 103, 301
Jewell P.R., Snyder L.E., Walmsley C.M., et al., 1991, A and A 242, 211
Kastner J.H., Weintraub D.A., 1995, ApJ 452, 833
Kastner J.H., Weintraub D.A., Merrill K.M., Gatley I., 1998, Ai 116, 1412
Lewis B.M., 1989, ApJ 338, 234
Lewis B.M., Eder J., Terzian Y., 1990, ApJ 362, 634
Likkel L., 1989, ApJ 344, 350
Likkel L., Morris M., Maddalena R., 1992, A and A 256, 581
Morris M., Bowers P.F., Turner B.E., 1984, ApJ 259, 625
Nakashima J., Deguchi S., 2000, PASJ, in press
Nedoluha G.E., Bowers P.F., 1992, ApJ 392, 249
Nyman LA., Hall P.J., Olofsson H., 1998, A and AS 127, 185
Payne H.E., Phillips J.A., Terzian Y., 1988, ApJ 326, 368
Reddy B.E., Hrivnak B.J., 1999, AJ 117, 1834
Sahai R., Te Lintel Hekkert P., Morris M., et al., 1999a, ApJ 514, LI 15
Sahai R., Zijlstra A., Bujarrabal V., Te Lintel Hekkert P., 1999b, Ai 117, 1408
Seaquist E.R., Plume R., Davis L.E., 1991, ApJ 367, 200
Sevenster M.N., Chapman J.M., Habing H.J., et al., 1997, A and AS 124, 509
Shepherd M.C., Cohen R.J., Gaylard M.J., West M.E., 1990, Nature 344, 522
Skinner C.J., Meixner M., Bobrowsky M., 1998, MNRAS 300, L29
Steffen M., Szczerba R., Schönberner D., 1998, A and A 337, 149 Te Lintel Hekkert P., 1991 A and A 248, 209
Te Lintel Hekkert P., Chapman J.M., Zijlstra A.A., 1992, AN 390, L23 Te Lintel Hekkert P., Chapman J.M., 1996, A and AS 119, 459
van der Veen W.E.C.J., Habing H.J., Geballe T.R., 1989, A and A 226, 108
Zijlstra A.A., Te Lintel Hekkert P., Pottasch S.R., et al., 1989, A and A 217, 157
Zijlstra A.A., Gaylard M.J., Te Lintel Hekkert P., et al., 1991, A and A 243, L9
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2001 Springer Science+Business Media Dordrecht
About this chapter
Cite this chapter
Engels, D. (2001). Maser Diagnostics to Identify Stars Departing from the AGB. In: Szczerba, R., Górny, S.K. (eds) Post-AGB Objects as a Phase of Stellar Evolution. Astrophysics and Space Science Library, vol 265. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-9688-6_66
Download citation
DOI: https://doi.org/10.1007/978-94-015-9688-6_66
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-481-5758-7
Online ISBN: 978-94-015-9688-6
eBook Packages: Springer Book Archive