Dead zones of classical habitability in stellar binary systems
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Although habitability, defined as the general possibility of hosting life, is expected to occur under a broad range of conditions, the standard scenario to allow for habitable environments is often described through habitable zones (HZs). Previous work indicates that stellar binary systems typically possess S-type or P-type HZs, with the S-type HZs forming ring-type structures around the individual stars and P-type HZs forming similar structures around both stars, if considered a pair. However, depending on the stellar and orbital parameters of the system, typically, there are also regions within the systems outside of the HZs, referred to as dead zones (DZs). In this study, we will convey quantitative information on the width and location of DZs for various systems. The results will also depend on the definition of the stellar HZs as those are informed by the planetary climate models.
KeywordsAstrobiology Binaries: general Planetary systems Stars: late-type
This work has been supported by the Department of Physics, University of Texas at Arlington and the U.S. Department of Education through the Graduate Assistance in Areas of National Need (GAANN) program (S. Y. M.). Additionally, we wish to draw the reader’s attention to the online tool BinHab 2.0, created by one of us (Z. W.) and hosted at The University of Texas at Arlington. It allows the calculation of habitable regions in binary systems based on the developed method.
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