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Boundaries of the habitable zone: unifying dynamics, astrophysics, and astrobiology

Published online by Cambridge University Press:  28 February 2005

Milan M. Ćirković
Milan M. Ćirković
Affiliation:
Astronomical Observatory Belgrade, Volgina 7, 11160 Belgrade-74, Serbia and Montenegro email: mcirkovic@aob.aob.bg.ac.yu Department of Physics, University of Novi Sad, Trg Dositeja Obradovića 4, 21000 Novi Sad, Serbia and Montenegro
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Abstract

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We are witnessing tremendous progress in the nascent multidisciplinary field of astrobiology, encompassing the origin and evolution of life in the cosmic context. One of the key concepts recently introduced in this field is the Galactic Habitable Zone (GHZ): an interval of galactocentric distances convenient for formation of stars possessing habitable planets. The boundaries of the GHZ are still poorly understood, however. Here we present a comparative analysis of various proposals for the mechanisms determining the GHZ boundaries, as well as different numerical values obtained. When joined with the models of Galactic stellar distribution, this gives us a better handle on the number of potential life-bearing sites.To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

Keywords

AstrobiologyGalaxy: structureGalaxy: kinematics and dynamicsextraterrestrial intelligence
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2004 , Issue IAUC197 , August 2004 , pp. 113 - 118
Copyright
© 2005 International Astronomical Union