http://arxiv.org/abs/1901.01270
We show that planets around M-dwarfs with $M_\star \lesssim 0.2 M_\odot$ may not receive enough photons in the photosynthetically active range of $400$-$750$ nm to sustain Earth-like biospheres. As a result of the lower biological productivity, it is likely that biotic molecular oxygen will not build up to detectable levels in the atmospheres of habitable planets orbiting low-mass stars.
M. Lingam and A. Loeb
Tue, 8 Jan 19
29/99
Comments: 4 pages; 2 figures