Abstract
It is known that the extremely hot environments of Wolf-Rayet stars and novae support dust formation, although in some selected cases only. The similarities in the luminosities of these objects suggest similar mechanisms of dust formation. The situation is reviewed in terms of the number of ionizing photons available for hydrogen, carbon and nitrogen other than helium. The larger abundance of nitrogen in the ejecta modifies these numbers significantly. Simple calculations for neutral carbon atoms via recombinations show that a critical condition is required to be met with for this purpose. This can be understood as due to the strong UV fields which leave the grains positively charged. Further, the type of dust appears to be decided by the ingredients constituting the ejecta.
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References
Callus, C.M., Albinson, J.S., and Evans, A.: 1987,Astroph. Space Science 131, 437.
Duley, W.W. and Williams, D.A.: 1981,Monthly Not. Roy. Astr. Soc. 196, 269.
Gallagher, D.: 1977,Astron. J. 82, 209.
van der Huchtet al.: 1981,Space Science Rev. 28, 227.
Maeder, A.: 1991,Astron. Astroph. 242, 93.
Mitchell, R.A. and Evans, A.: 1984,Monthly Not. Roy. Astr. Soc. 209, 945.
Smits, D.P.: 1991,Monthly Not. Roy. Astr. Soc. 248, 20.
Smith, L.F. and Maeder, A.: 1991,Astron. Astroph. 241, 77.
Truran, J.W. and Livio, M., 1986,Astroph. J. 308, 721.
Williams, P.M., van der Hucht, K.A., and The, P.S.: 1987,Astron. Astroph. 182, 91.
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Shylaja, B.S. Dust formation in hot stars. Astrophys Space Sci 202, 373–382 (1993). https://doi.org/10.1007/BF00626890
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DOI: https://doi.org/10.1007/BF00626890