# The habitability of Proxima Centauri b. I. Irradiation, rotation and volatile inventory from formation to the present

@article{Ribas2016TheHO,
title={The habitability of Proxima Centauri b. I. Irradiation, rotation and volatile inventory from formation to the present},
author={Ignasi Ribas and {\'E}meline Bolmont and Franck Selsis and Ansgar Reiners and J{\'e}r{\'e}my Leconte and Sean N. Raymond and Scott G. Engle and Edward F. Guinan and Julien Morin and Martin Turbet and François Forget and Guillem Anglada-Escud{\'e}},
journal={arXiv: Earth and Planetary Astrophysics},
year={2016}
}
• Published 24 August 2016
• Geology, Physics
• arXiv: Earth and Planetary Astrophysics
Proxima b is a planet with a minimum mass of 1.3 MEarth orbiting within the habitable zone (HZ) of Proxima Centauri, a very low-mass, active star and the Sun's closest neighbor. Here we investigate a number of factors related to the potential habitability of Proxima b and its ability to maintain liquid water on its surface. We set the stage by estimating the current high-energy irradiance of the planet and show that the planet currently receives 30 times more EUV radiation than Earth and 250…
161 Citations

## Figures and Tables from this paper

• Physics, Geology
• 2016
Radial velocity monitoring has found the signature of a $M \sin i = 1.3$~M$_\oplus$ planet located within the Habitable Zone (HZ) of Proxima Centauri \citep{Anglada16}. Despite a hotter past and an
• Physics, Geology
• 2016
The newly detected Earth-mass planet in the habitable zone of Proxima Centauri could potentially host life—if it has an atmosphere that supports surface liquid water. We show that thermal phase curve
• Physics, Geology
• 2016
We examine the feasibility of detecting auroral emission from the potentially habitable exoplanet Proxima Centauri b. Detection of aurorae would yield an independent confirmation of the planet’s
• Physics, Geology
• 2017
The nearest stellar system consists of the stars Proxima, alpha Centauri A and B and at least one planet Proxima b. The habitability of Proxima b and any other planets are likely to be significantly
• Physics, Geology
• 2016
We explore the possible interiors of Proxima Centauri b, assuming that the planet belongs to the class of dense solid planets (rocky with possible addition of water) and derive the corresponding
• Physics, Geology
• 2017
The discovery of exoplanets orbiting red dwarfs, such as Proxima Centauri b, has led to questions of their habitability and capacity to retain liquid surface water. While Proxima b is in a “temperate
• Physics, Geology
• 2021
The discovery of a planet orbiting around Proxima Centauri, the closest star to the Sun, opens new avenues for the remote observations of the atmosphere and surface of an exoplanet, Proxima b. To
• Geology, Physics
• 2020
We developed a new numerical model to constrain the interior structure of rocky Exoplanets, and applied it to the nearby planets Proxima Centauri b and Ross-128 b. The recently measured elemental
• Physics, Geology
Astronomy & Astrophysics
• 2021
Context. Since the discovery of a potentially low-mass exoplanet around our nearest neighbour star Proxima Centauri, several works have investigated the likelihood of a shielding atmosphere and
• Physics, Geology
Astrobiology
• 2018
1-D coupled climate-photochemical models are used to generate self-consistent atmospheres for several evolutionary scenarios, including high-O2, high-CO2, and more Earth-like atmospheres, with both oxic and anoxic compositions, and show that these modeled environments can be habitable or uninhabitable at Proxima Cen b's position in the habitable zone.

## References

SHOWING 1-10 OF 159 REFERENCES

• Physics, Geology
• 2016
Radial velocity monitoring has found the signature of a $M \sin i = 1.3$~M$_\oplus$ planet located within the Habitable Zone (HZ) of Proxima Centauri \citep{Anglada16}. Despite a hotter past and an
• Physics
Nature
• 2016
Observations reveal the presence of a small planet with a minimum mass of about 1.3 Earth masses orbiting Proxima with a period of approximately 11.2 days at a semi-major-axis distance of around 0.05 astronomical units.
• Physics, Geology
• 2016
Proxima Centauri is an M dwarf approximately 15,000 au from the Alpha Centauri binary, comoving and likely in a loosely bound orbit. Dynamic simulations show that this configuration can form from a
• Physics, Geology
Icarus
• 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.
• Physics
• 2011
Aims. We report simultaneous observations of the nearby flare star Proxima Centauri with VLT/UVES and XMM-Newton over three nights in March 2009. Our optical and X-ray observations cover the star’s
• Physics, Geology
• 2014
Earth-scale planets in the classical habitable zone (HZ) are more likely to be habitable if they possess active geophysics. Without a constant internal energy source, planets cool as they age,
• Geology, Physics
• 2007
Radial velocity surveys are now able to detect terrestrial planets at habitable distance from M-type stars. Recently, two planets with minimum masses below 10 Earth masses were reported in a triple
• Physics, Geology
• 2013
The Kepler space telescope has opened new vistas in exoplanet discovery space by revealing populations of Earth-sized planets that provide a new context for understanding planet formation.
• Physics, Geology
• 2014
We calculate the pre-main-sequence habitable zone (HZ) for stars of spectral classes F–M. The spatial distribution of liquid water and its change during the pre-main-sequence phase of protoplanetary
• Physics
• 2000
We study H I Lyα absorption observed by the Hubble Space Telescope toward the nearby binary system α Centauri (G2 V + K0 V) and its distant companion star Proxima Centauri (M5.5 Ve). Absorption from