2019
DOI: 10.1093/mnras/stz2519
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Galactic habitability re-examined: indications of bimodality

Abstract: The problem of the extent of habitable zones in different kinds of galaxies is one of the outstanding challenges for contemporary astrobiology. In the present study, we investigate habitability in a large sample of simulated galaxies from the Illustris Project in order to at least roughly quantify the hospitality to life of different galactic types. The pioneering study of Dayal et al. (2015) is critically examined and some of its results are amended. In particular, we find a tentative evidence for a second mo… Show more

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Cited by 17 publications
(11 citation statements)
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References 85 publications
(115 reference statements)
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“…3 Although there are some vital factors that have been set aside, our analysis suggests that TDEs might exert a substantive influence on planetary habitability at distances 0.1-1 kpc from the central black hole of the MW. Hence, not only may they merit further investigation along the same lines as supernovae, gamma-ray bursts and AGNs, but they ought to be incorporated into state-of-the-art numerical models that track the spatio-temporal evolution of of galactic habitability at subkpc distances (Dayal et al 2015;Forgan et al 2017;Stojković et al 2019).…”
Section: Discussionmentioning
confidence: 99%
“…3 Although there are some vital factors that have been set aside, our analysis suggests that TDEs might exert a substantive influence on planetary habitability at distances 0.1-1 kpc from the central black hole of the MW. Hence, not only may they merit further investigation along the same lines as supernovae, gamma-ray bursts and AGNs, but they ought to be incorporated into state-of-the-art numerical models that track the spatio-temporal evolution of of galactic habitability at subkpc distances (Dayal et al 2015;Forgan et al 2017;Stojković et al 2019).…”
Section: Discussionmentioning
confidence: 99%
“…The impact rate may be hazardous for large fractions of the stars in extreme CSSs and red nuggets. This is interesting because Stojković et al (2019) proposed that high-metallicity dwarf galaxies including M32 are well-suited for ETI evolution.…”
Section: Order-of-magnitude Estimate Of Characteristic Impact Ratementioning
confidence: 98%
“…We have seen that the new wave of thinking, inaugurated by the work of Dayal et al (2015), implies that the early-type galaxies are indeed the most habitable kind of galaxies. There are tantalizing indications that this applies to some dwarfs as well (Stojković et al 2019). All in all, it does seem that the morphological type per se is a poor indicator of the habitability of any particular galaxy.…”
Section: Morphological Type and Other Derived Criteriamentioning
confidence: 99%