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Astrobiological effects of F, G, K and M main-sequence stars

Published online by Cambridge University Press:  01 October 2007

M. Cuntz ,
L. Gurdemir ,
E. F. Guinan  and
R. L. Kurucz
M. Cuntz
Affiliation:
Department of Physics, University of Texas at Arlington, Arlington, TX 76019-0059, USA email: cuntz@uta.edu, gurdemir@uta.edu
L. Gurdemir
Affiliation:
Department of Physics, University of Texas at Arlington, Arlington, TX 76019-0059, USA email: cuntz@uta.edu, gurdemir@uta.edu
E. F. Guinan
Affiliation:
Department of Astronomy and Astrophysics, Villanova University, Villanova, PA 19085, USA email: edward.guinan@villanova.edu
R. L. Kurucz
Affiliation:
Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA email: rkurucz@cfa.harvard.edu
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Abstract

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We focus on the astrobiological effects of photospheric radiation produced by main-sequence stars of spectral types F, G, K, and M. The photospheric radiation is represented by using realistic spectra, taking into account millions or hundred of millions of lines for atoms and molecules. DNA is taken as a proxy for carbon-based macromolecules, assumed to be the chemical centerpiece of extraterrestrial life forms. Emphasis is placed on the investigation of the radiative environment in conservative as well as generalized habitable zones.

Keywords

Astrobiologystars: atmospheresstars: late-type

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