Transient conditions for biogenesis on low-mass exoplanets with escaping hydrogen atmospheres

DSpace/Manakin Repository

Transient conditions for biogenesis on low-mass exoplanets with escaping hydrogen atmospheres

Citable link to this page

 

 
Title: Transient conditions for biogenesis on low-mass exoplanets with escaping hydrogen atmospheres
Author: Wordsworth, Robin
Citation: Wordsworth, R. 2012. “Transient Conditions for Biogenesis on Low-Mass Exoplanets with Escaping Hydrogen Atmospheres.” Icarus 219 (1) (May): 267–273. doi:10.1016/j.icarus.2012.02.035. http://dx.doi.org/10.1016/j.icarus.2012.02.035.
Full Text & Related Files:
Abstract: Exoplanets with lower equilibrium temperatures than Earth and primordial hydrogen atmospheres that evaporate after formation should pass through transient periods where oceans can form on their surfaces, as liquid water can form below a few thousand bar pressure and H2–H2 collision-induced absorption provides significant greenhouse warming. The duration of the transient period depends on the planet size, starting H2 inventory and star type, with the longest periods typically occurring for planets around M-class stars. As pre-biotic compounds readily form in the reducing chemistry of hydrogen-rich atmospheres, conditions on these planets could be favourable to the emergence of life. The ultimate fate of any emergent organisms under such conditions would depend on their ability to adapt to (or modify) their gradually cooling environment.
Published Version: doi:10.1016/j.icarus.2012.02.035
Other Sources: http://arxiv.org/abs/1106.1411
Terms of Use: This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAP
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:27846842
Downloads of this work:

Show full Dublin Core record

This item appears in the following Collection(s)

 
 

Search DASH


Advanced Search
 
 

Submitters