60 Citations
UV habitability and dM stars: an approach for evaluation of biological survival
- PhysicsProceedings of the International Astronomical Union
- 2009
Preliminary results show that even after UV damage, the surviving cells were able to resume growth with nearly normal kinetics, and the hypothesis that UV could set a limit for the development of extraterrestrial life was analyzed.
Flares and habitability
- PhysicsProceedings of the International Astronomical Union
- 2011
Abstract At present, dwarf M stars are being considered as potential hosts for habitable planets. However, an important fraction of these stars are flare stars, which among other kind of radiation,…
Lessons from early Earth: UV surface radiation should not limit the habitability of active M star systems
- Physics, GeologyMonthly Notices of the Royal Astronomical Society
- 2019
The closest potentially habitable worlds outside our Solar system orbit a different kind of star than our Sun: smaller red dwarf stars. Such stars can flare frequently, bombarding their planets with…
UV surface habitability of the TRAPPIST-1 system
- Physics, Geology
- 2017
With the discovery of rocky planets in the temperate habitable zone (HZ) of the close-by cool star TRAPPIST-1 the question of whether such planets could harbour life arises. Habitable planets around…
The High-energy Radiation Environment around a 10 Gyr M Dwarf: Habitable at Last?
- Physics, GeologyThe Astronomical Journal
- 2020
Recent work has demonstrated that high levels of X-ray and UV activity on young M dwarfs may drive rapid atmospheric escape on temperate, terrestrial planets orbiting within the habitable zone.…
THE ULTRAVIOLET RADIATION ENVIRONMENT AROUND M DWARF EXOPLANET HOST STARS
- Physics, Geology
- 2013
The spectral and temporal behavior of exoplanet host stars is a critical input to models of the chemistry and evolution of planetary atmospheres. Ultraviolet photons influence the atmospheric…
The high-energy radiation environment of the habitable-zone super-Earth LHS 1140b
- PhysicsAstronomy & Astrophysics
- 2019
<p>In the last few years many exoplanets in the habitable zone (HZ) of M-dwarfs have been discovered. The HZ is defined by the range of distances from a star in which a planet can maintain liquid…
First long-term activity study of AU Microscopii: a possible chromospheric cycle
- PhysicsMonthly Notices of the Royal Astronomical Society
- 2018
M stars are ideal targets to search for Earth-like planets. However, they usually have high levels of magnetic activity, which could affect their habitability and make difficult the detection of…
The Surface UV Environment on Planets Orbiting M Dwarfs: Implications for Prebiotic Chemistry and the Need for Experimental Follow-up
- Physics, Geology
- 2017
Potentially habitable planets orbiting M dwarfs are of intense astrobiological interest because they are the only rocky worlds accessible to biosignature search over the next 10+ years because of a…
References
SHOWING 1-10 OF 60 REFERENCES
Habitable zones around main sequence stars.
- Physics, GeologyIcarus
- 1993
The results suggest that mid-to-early K stars should be considered along with G stars as optimal candidates in the search for extraterrestrial life.
Climate model studies of synchronously rotating planets.
- Physics, GeologyAstrobiology
- 2003
It is reinforced that synchronously rotating planets within the circumstellar habitable zones of M dwarf stars should be habitable, and therefore M dwarf systems should not be excluded in future searches for exoplanets.
A reappraisal of the habitability of planets around M dwarf stars.
- Physics, GeologyAstrobiology
- 2007
It is concluded that M dwarf stars may indeed be viable hosts for planets on which the origin and evolution of life can occur and it makes sense to include M dwarfs in programs that seek to find habitable worlds and evidence of life.
The HARPS search for southern extra-solar planets. XI. Super-Earths (5 and 8 M{⊕}) in a 3-planet system
- Physics, Geology
- 2007
This Letter reports on the detection of two super-Earth planets in the Gl 581 system, which is already known to harbour a hot Neptune. One of the planets has a mass of 5 M⊕ and resides at the “warm”…
M stars as targets for terrestrial exoplanet searches and biosignature detection.
- Physics, GeologyAstrobiology
- 2007
It is concluded that attempts at remote sensing of biosignatures and nonbiological markers from M star planets are important, not as tests of any quantitative theories or rational arguments, but instead because they offer an inspection of the residues from a Gyr-long biochemistry experiment in the presence of extreme environmental fluctuations.
The Formation and Habitability of Extra-Solar Planets
- Physics, Geology
- 1996
Abstract A quantitative numerical program, developed to model the formation of the terrestrial planets and asteroids of our solar System (Wetherill 1992), has been extended to include a more general…
Biosignatures from Earth-like planets around M dwarfs.
- Physics, GeologyAstrobiology
- 2005
Coupled one-dimensional photochemical-climate calculations have been performed for hypothetical Earth-like planets around M dwarfs to determine which biosignature gases might be observed by a future, space-based telescope.
Simulations of the Atmospheres of Synchronously Rotating Terrestrial Planets Orbiting M Dwarfs: Conditions for Atmospheric Collapse and the Implications for Habitability☆
- Physics, Geology
- 1997
Abstract Planets within the habitable zones of M dwarfs are likely to be synchronous rotators; in other words, one side is permanently illuminated while the other side is in perpetual darkness. We…
A Long‐Period Jupiter‐Mass Planet Orbiting the Nearby M Dwarf GJ 849
- Physics, Geology
- 2006
We report precise Doppler measurements of GJ 849 (M3.5 V) that reveal the presence of a planet with a minimum mass of 0.82MJup in a 5.16 yr orbit. At a = 2.35 AU, GJ 849b is the first…
A Dedicated M Dwarf Planet Search Using The Hobby-Eberly Telescope
- Physics, Geology
- 2003
We present the first results from our planet-search program using the 9.2 m Hobby-Eberly Telescope (HET) at McDonald Observatory to detect planets around M-type dwarf stars by means of high-precision…