%0 Generic %1 guedel2014astrophysical %A Guedel, M. %A Dvorak, R. %A Erkaev, N. %A Kasting, J. %A Khodachenko, M. %A Lammer, H. %A Pilat-Lohinger, E. %A Rauer, H. %A Ribas, I. %A Wood, B. E. %D 2014 %K 2014 a:Dvorak a:Guedel a:Kasting habitability planets review %T Astrophysical Conditions for Planetary Habitability %U http://arxiv.org/abs/1407.8174 %X With the discovery of hundreds of exoplanets and a potentially huge number of Earth-like planets waiting to be discovered, the conditions for their habitability have become a focal point in exoplanetary research. The classical picture of habitable zones primarily relies on the stellar flux allowing liquid water to exist on the surface of an Earth-like planet with a suitable atmosphere. However, numerous further stellar and planetary properties constrain habitability. Apart from "geophysical" processes depending on the internal structure and composition of a planet, a complex array of astrophysical factors additionally determine habitability. Among these, variable stellar UV, EUV, and X-ray radiation, stellar and interplanetary magnetic fields, ionized winds, and energetic particles control the constitution of upper planetary atmospheres and their physical and chemical evolution. Short- and long-term stellar variability necessitates full time-dependent studies to understand planetary habitability at any point in time. Furthermore, dynamical effects in planetary systems and transport of water to Earth-like planets set fundamentally important constraints. We will review these astrophysical conditions for habitability under the crucial aspects of the long-term evolution of stellar properties, the consequent extreme conditions in the early evolutionary phase of planetary systems, and the important interplay between properties of the host star and its planets.

@misc{guedel2014astrophysical, abstract = {With the discovery of hundreds of exoplanets and a potentially huge number of Earth-like planets waiting to be discovered, the conditions for their habitability have become a focal point in exoplanetary research. The classical picture of habitable zones primarily relies on the stellar flux allowing liquid water to exist on the surface of an Earth-like planet with a suitable atmosphere. However, numerous further stellar and planetary properties constrain habitability. Apart from "geophysical" processes depending on the internal structure and composition of a planet, a complex array of astrophysical factors additionally determine habitability. Among these, variable stellar UV, EUV, and X-ray radiation, stellar and interplanetary magnetic fields, ionized winds, and energetic particles control the constitution of upper planetary atmospheres and their physical and chemical evolution. Short- and long-term stellar variability necessitates full time-dependent studies to understand planetary habitability at any point in time. Furthermore, dynamical effects in planetary systems and transport of water to Earth-like planets set fundamentally important constraints. We will review these astrophysical conditions for habitability under the crucial aspects of the long-term evolution of stellar properties, the consequent extreme conditions in the early evolutionary phase of planetary systems, and the important interplay between properties of the host star and its planets.}, added-at = {2014-07-31T20:48:23.000+0200}, author = {Guedel, M. and Dvorak, R. and Erkaev, N. and Kasting, J. and Khodachenko, M. and Lammer, H. and Pilat-Lohinger, E. and Rauer, H. and Ribas, I. and Wood, B. E.}, biburl = {https://www.bibsonomy.org/bibtex/279dbfd0a7a932482710df50e6d4fdb5f/danielcarrera}, description = {[1407.8174] Astrophysical Conditions for Planetary Habitability}, interhash = {6f1a1670e9e8bf55770115f880ec5a17}, intrahash = {79dbfd0a7a932482710df50e6d4fdb5f}, keywords = {2014 a:Dvorak a:Guedel a:Kasting habitability planets review}, note = {cite arxiv:1407.8174Comment: to appear in Protostars and Planets VI, 24 pages, 12 figures}, timestamp = {2014-07-31T20:48:23.000+0200}, title = {Astrophysical Conditions for Planetary Habitability}, url = {http://arxiv.org/abs/1407.8174}, year = 2014 }