In August 2016 the Pale Red Dot team, led by astronomer Guillem Anglada-Escude from Queen Mary, University of London, discovered a rocky exoplanet in the orbit of our closest stellar neighbor, Proxima Centauri. The planet, Proxima Centauri b has a minimum mass of 1.3 Earth masses and orbits within the ‘habitable zone’ of it’s red dwarf host star, making it a key target for continued observation, characterization and modeling studies. The system is 4.2 light years from the Earth.An extraordinary response from the scientific community following the discovery of Proxima Centauri b has resulted in a large number of scientific journal articles, blogs, and social media posts. One of NExSS’s largest teams, the Virtual Planetary Laboratory at the University of Washington, has contributed significantly to the scientific literature on our early understanding of the potential habitability of this new world. Here, we attempt to bring some of the seminal papers outlining the discovery, properties and potential habitability of this new planet together in one place in order to facilitate discussion and future collaborative research efforts.
Seminal Papers
Confirmed Discovery
Author: Anglada-Escude et al. (2016)
Title: A terrestrial planet candidate in a temperate orbit around Proxima Centauri
First Habitability Assessments (Chronological)
Author: Airapetian et al. (2017)
Title: How Hospitable Are Space Weather Affected Habitable Zones? The Role of Ion Escape
Author: Dong et al. (2017)
Title: Is Proxima Centauri B Habitable? – A Study of Atmospheric Loss
Author: Ribas et al. (2016)
Title: The habitability of Proxima Centauri b. I. Irradiation, rotation and volatile inventory from formation to the present
Author: Turbet et al. (2016)
Title: The habitability of Proxima Centauri b II. Possible climates and Observability
Author: Barnes et al. (2016)
Title: The Habitability of Proxima Centauri b I: Evolutionary Scenarios
Author: Goldblatt et al. (2016)
Title: Tutorial models of the climate and habitability of Proxima Centauri b: a thin atmosphere is sufficient to distribute heat given low stellar flux
Author: Meadows et al. (2016)
Title: The Habitability of Proxima Centauri b: II: Environmental States and Observational Discriminants
Formation and Characterization
Author: Zahnle & Catling (2017)
Title: The cosmic shoreline: the evidence that escape determines which planets have atmospheres, and what this may mean for Proxima Centauri b
Author: Bixel & Apai (2017)
Title: Probabilistic Constraints on the Mass and Composition of Proxima B
Author: Brown (2017)
Title: On the eccentricity of Proxima b
Author: Kane et al. (2017)
Title: On the Orbital Inclination of Proxima Centauri B
Author: Mesa et al. (2017)
Title: Upper limits for mass and radius of objects around Proxima Cen from SPHERE/VLT
Author: Garraffo et al. (2016)
Title: The Space Weather of Proxima Centauri b
Author: Brugger et al. (2016)
Title: Possible internal structures and compositions of Proxima Centauri b
Author: Luger et al. (2016)
Title: The Pale Green Dot: A method to characterize Proxima Centauri b using exo-aurorae
Author: Turbet et al. (2016)
Title: Exploring plausible formation scenarios for the planet candidate orbiting Proxima Centauri
Author: Kreidberg & Loeb (2016)
Title: Prospects for Characterizing the Atmosphere of Proxima Centauri b
Direct Survey Feasibility
Author: Heller & Hippke (2017)
Title: Deceleration of high-velocity interstellar photon sails into bound orbits at ⍺ Centauri
Blogs
- Rory Barnes – Opportunities and Obstacles for Life on Proxima b
- Gavin Coleman – Proxima b, where did it come from?
- Pale Red Dot Team – Proxima b is our neighbor… Better get used to it!
Media
- BBC Four – Interstellar: The Journey to Proxima b
- Space.com – Alien World Proxima b Around Nearest Star Could be Earth-like
- SETI Institute Talks – A Terrestrial Planet at Proxima Centauri
Others
- Pale Red Dot Team – Reddit Science AMA (Ask Me Anything)