The present work proposes for the first time, an explicit
mechanism inspired by the dynamics of biological dispersion, widely used in ecology
and epidemiology, to study the dispersion of biogenic units, interpreted as
complex organic molecules, between rocky or water exoplanets (habitats) located
inside star clusters. The discovery of a growing number of exoplanets and even
extrasolar systems supports the scientific consensus that it is possible to
find other signs of life in the universe. It should be noted that these
investigations are characterized by their strong interdisciplinary nature
because they combine elements of physics, chemistry, biology, geology, and
mathematics among many other fields, leading to new research questions, new
databases, and new methods of analysis. The results of the dynamic simulation
suggest that for clusters with populations lower than 4 M⊕/ly3
it is not possible to obtain biogenic worlds after 5 Gyr. Above this population
size, biogenic dispersion seems to follow a power law, the larger the density
of worlds lessen the impact rate (β⁻⁰.⁴⁶) value to obtain at least one viable
biogenic Carrier habitat after 5 Gyr. Finally, when we investigate scenarios by
varying β, a well-defined set of density intervals can be defined by its
characteristic β value, suggesting that biogenic dispersion has a behavior of
“minimal infective dose” of “minimal biogenic effective” events by interval
i.e. once this dose has been achieved, doesn’t matter if additional biogenic
impact events occur on the habitat. The concurrence of the dispersion of
complex biogenic units using epidemic theory, with suitable habitability
conditions, what we call Biogenic Space, the appearance of life in an
extrasolar system would be possible.
Author(s) Details:
Javier Burgos-Salcedo,
Fundación Universitaria San Mateo, Bogotá, Colombia.
Diana C. Sierra,
Corporación
para la Investigación e Innovación -CIINAS, Bogotá, Colombia.
Please see the link here: https://stm.bookpi.org/IBS-V2/article/view/14136
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