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Título : Rotational synchronization may enhance habitability for circumbinary planets : kepler binary case studies
Autor : Mason, Paul A.
Zuluaga Callejas, Jorge Iván
Clark, Joni M.
Cuartas Restrepo, Pablo Andrés
Palabras clave : Sincronización
Kepler, Johannes, 1571-1630. Sobre los principios de la astronomía
Rotación (física)
Fecha de publicación : 2013
Editorial : American Astronomical Society
Citación : Mason, P. A., Zuluaga Callejas, J. I., Clark, J. M., & Cuartas Restrepo, P. A. (2013). Rotational synchronization may enhance habitability for circumbinary planets: kepler binary case studies. Astrophysical Journal. 774, 1-8. 10. DOI:1088/2041-8205/774/2/L26
Abstract : We report a mechanism capable of reducing (or increasing) stellar activity in binary stars, thereby potentially enhancing (or destroying) circumbinary habitability. In single stars, stellar aggression toward planetary atmospheres causes mass-loss, which is especially detrimental for late-type stars, because habitable zones are very close and activity is long lasting. In binaries, tidal rotational breaking reduces magnetic activity, thus reducing harmful levels of X-ray and ultraviolet (XUV) radiation and stellar mass-loss that are able to erode planetary atmospheres. We study this mechanism for all confirmed circumbinary (p-type) planets. We find that main sequence twins provide minimal flux variation and in some cases improved environments if the stars rotationally synchronize within the first Gyr. Solar-like twins, like Kepler 34 and Kepler 35, provide low habitable zone XUV fluxes and stellar wind pressures. These wide, moist, habitable zones may potentially support multiple habitable planets. Solar-type stars with lower mass companions, like Kepler 47, allow for protected planets over a wide range of secondary masses and binary periods. Kepler 38 and related binaries are marginal cases. Kepler 64 and analogs have dramatically reduced stellar aggression due to synchronization of the primary, but are limited by the short lifetime. Kepler 16 appears to be inhospitable to planets due to extreme XUV flux. These results have important implications for estimates of the number of stellar systems containing habitable planets in the Galaxy and allow for the selection of binaries suitable for follow-up searches for habitable planets.
Grupo de INV. : Grupo de Fisica y Astrofisica Computacional (FACOM)
URI : http://hdl.handle.net/10495/8532
ISSN : 0004-637X
1538-4357 E
Aparece en las colecciones: CIEN (Centro de Investigaciones en Ciencias Exactas y Naturales)

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