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Can Life develop in the expanded habitable zones around Red Giant Stars?

April 26, 2017develop Expanded giant habitable life red SETI seti league stars zones

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Can Life develop in the expanded habitable zones around Red Giant Stars?

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Authors: Bruno Lopez, Jean Schneider, William C. Danchi We present some new ideas about the possibility of life developing around sub-giant and red giant stars. Our study concerns the temporal evolution of the habitable zone. The distance between the star and the habitable zone, as well as its width, increases with time as a consequence of stellar evolution. The habitable zone moves outward after the star leaves the main sequence, sweeping a wider range of distances from the star until the star reaches the tip of the asymptotic giant branch. If life could form and evolve over time intervals from $5 \times 10^8$ to $10^9$ years, then there could be habitable planets with life around red giant stars. For a 1 M$_{\odot}$ star at the first stages of its post main-sequence evolution, the temporal

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Stars: Circumstellar Matter, Stars: Planetary Systems, Stars: Evolution, stars: late type, Techniques: High Anular Resolution, Techniques: Interferometric