Abstract
We present the astrophysical conditions necessary for the ejection of shielded microorganisms from a solar system and the biological conditions involving ultraviolet and ionizing radiations to which they are subjected in space. The radiation dose for both UV and ionizing radiation from the host star, the destination star and interstellar space is calculated for three different micro-organisms. The time of transport and the survival of the micro-organisms are strongly dependent on the composition and thickness of any mantle encasing the micro-organism and on the mass/luminosity ratio of the two stars. The maximum size of grains that can be ejected from the vicinity of one solar mass main sequence and red giant stars ranges from 0.65-0.35µm and 2.1-1.2µm respectively, for a reasonable range of densities. We conclude that unshielded known micro-organisms are immediately killed by ultraviolet radiation, and that an ice mantle does not provide sufficient shielding for either type of star. However, micro-organisms shielded by a carbonaceous thin-film mantle can be ejected from the vicinity of a one solar-mass red-giant star, and such micro-organisms have a high probability of surviving damage from the ultraviolet and ionizing radiations to which they are exposed.
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Allen, C.W.: 1973,Astrophysical Quantities, 3rd Ed., Athlone Press.
Arrhenius, S.: 1908,Worlds in the Making, Harper and Row, N.Y. and London.
Ashwood-Smith, M.J., Copeland, J. and Wilcockson, J.: 1968,Nature 217, 337.
Burns, J.A., Lamy, P.L. and Soter, S.: 1979,Icarus 40, 1–48.
Brandt, J.C. and Hodge, P.W.: 1964,Solar System Astrophysics, McGraw-Hill, New York.
Calendar, R. (ed.): 1988,The Bacteriophages, Volume 1, Plenum Press, New York.
Char, B.W.et al.: 1988,MAPLE Reference Manual, 5th ed., WATCOM Publications, Waterloo, Ontario.
Chyba C. and Sagan, C.: 1988,Nature 355, 125.
Coggle, J.E.: 1983,Biological Effects of Radiation, 2nd ed., Taylor and Francis, London.
Dressler, K. and Schnepp, O.: 1960,J. Chem Phys. 33, 270–274.
Ergun, S., Yasinsky, J.B. and Townsend, J.R.: 1967,Carbon 5, 403–408.
Fluke, D.J.: 1956,Radiation Research 4, 193–205.
Glenister, P.H. and Lyon, M.S.: 1986,J. in Vitro Fertil. Embryo Transf. 3, 20–27.
Gray, L.H. (ed.): 1966,The Collected Papers of Douglas Lea, Blackwell Scientific Publications, Oxford.
Hartmann, W.K.: 1983,Moons and Planets, Wadsworth Publishing Company, Belmont, California.
Hobbs, P.V.: 1974,Ice Physics, Clarendon, Oxford.
Hoover, R.B.et al.: 1986,Earth, Moon and Planets 35, 19–45.
Horneck, G.: 1982,First European Congress on Cell Biology, Biology of the Cell 19, 471.
Hoyle, F. and Wickramasinghe, N.C.: 1979,Astrophys. Space Sci. 66, 77–90.
Hoyle, F. and Wickramasinghe, N.C.: 1981,Space Travellers: Bringers of Life, University College, Cardiff Press.
Hoyle, F. and Wickramasinghe, N.C.: 1982,Astrophys. Space Sci. 86, 321–329.
Hoyle, F. and Wickramasinghe, N.C.: 1983,Proofs That Life Is Cosmic, Mem. Inst. Fund. Studies, Sri Lanka No. 1.
Hoyle, F., Wickramasinghe, N.C. and Almufti, S.: 1986,Earth, Moon and Planets 35, 79–84.
Jabir, N.L., Hoyle, F. and Wickramasinghe, N.C.: 1983,Astroyhys. Space Sci. 91, 327–344.
Karttunen, H.et al. (eds.): 1987,Fundamental Astronomy, Springer-Verlag, Berlin, Heidelberg.
Lea, D.E.: 1946,Brit. J. Radiol. 19, 205–212.
Lea, D.E. and Salaman, M.H.: 1946,Proc. Roy. Soc. 133, 434–444.
Levine, M. and Cox, E.: 1963,Radiation Research 18, 220.
Lewis, N.F.: 1971,J. of General Microbiology 66, 29–35.
Lewis, N.F. and Kumta, U.S.: 1972,Biochemical and Biophysical Research Communications 47, 1100–1105.
McDonnell, J.A.M. (ed.): 1978,Cosmic Dust, John Wiley and Sons.
Melosh, H.J.: 1988,Nature 332, 687–688.
Mitchell, F.J. and Ellis, W.L.: 1971,Surveyor III: Bacterium isolated from lunar retrieved TV camera Proceedings of the Second Lunar Science Conference, Vol. 3, The M.I.T. Press, Cambridge, Mass., 2721–2733.
Moreno, M.A.: 1988,Nature 366, 209.
Palik, E.D.: 1985,Handbook of Optical Constants of Solids, Academic Press, Inc., Orlando, Florida.
Prevot, A.R.: 1966,Manual for the Classification and Determination of the Anaerobic Bacteria (Monograph of the Pasteur Institute), Lea and Febiger, Philadelphia.
Scheffler, H. and Elsasser, H.: 1988,Physics of the Galaxy and Interstellar Matter, Springer-Verlag, Berlin, Heidelberg.
Setlow, R.B. and Pollard, E.C.: 1962,Molecular Biophysics, Addison- Wesley Publishing Company, Inc., Reading, Mass.
Spitzer, L.: 1978,Physical Processes in the Interstellar Medium, John Wiley and Sons, Inc., p. 44.
Taylor, R.J.: 1977,The Stars: Their Structure and Evolution, Wykeham Publications (London) Ltd., London and Winchester.
Tobias, C.A. and Todd, P.: 1974,Space Radiation Biology and Related Topics, Academic Press, Inc., New York.
Weber, P. and Greenberg, J.M.: 1985,Nature 316, 403–407.
Wesson, P.S.: 1990,Quart. J. Roy. Astron. Soc. 31, 161–170.
Zelle, M.R. and Hollaender, A.: 1954,J. Bacteriology 68, 210–215.
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Secker, J., Lepock, J. & Wesson, P. Damage due to ultraviolet and ionizing radiation during the ejection of shielded micro-organisms from the vicinity of 1M ⊙ main sequence and red giant stars. Astrophys Space Sci 219, 1–28 (1994). https://doi.org/10.1007/BF00657856
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DOI: https://doi.org/10.1007/BF00657856