Proxima b is a terrestrial-mass planet in the habitable-zone of Proxima Centauri. Proxima Centauri’s high stellar activity however casts doubt on the habitability of Proxima b. Sufficiently bright and frequent […]
Proxima Centauri
Posted inProxima Centauri
Powerful Flare from Star Proxima Centauri Detected with ALMA
Using data from the Atacama Large Millimeter/submillimeter Array (ALMA), a team of astronomers discovered that a powerful stellar flare erupted from Proxima Centauri last March. This finding, published in the […]
Posted inPress Release, Proxima Centauri
Exocomets in the Proxima Centauri System and Their Importance for Water Transport
The scenario and the efficiency of water transport by icy asteroids and comets are still amongst the most important unresolved questions about the early phases of planetary systems. The detection […]
Posted inPress Release, Proxima Centauri
ALMA Discovery of Dust Belts Around Proxima Centauri
Proxima Centauri, the star closest to our Sun, is known to host at least one terrestrial planet candidate in a temperate orbit. Here we report the ALMA detection of the […]
Posted inAlpha Centauri, Press Release, Proxima Centauri
Was Proxima Centauri Captured by Alpha Centauri A and B?
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 […]
Posted inHabitable Zones, Press Release, Proxima Centauri
The Full Spectral Radiative Properties of Proxima Centauri
The discovery of Proxima b, a terrestrial temperate planet, presents the opportunity of studying a potentially habitable world in optimal conditions. A key aspect to model its habitability is to […]
Posted inPress Release, Proxima Centauri
Upper limits for Mass and Radius of objects around Proxima Cen from SPHERE/VLT
The recent discovery of an earth-like planet around Proxima Centauri has drawn much attention to this star and its environment. We performed a series of observations of Proxima Centauri using […]
Posted inPress Release, Proxima Centauri
Magnetic cycles in a Dynamo Simulation of Fully Convective M-star Proxima Centauri
The recent discovery of an Earth-like exoplanet around Proxima Centauri has shined a spot light on slowly rotating fully convective M-stars. When such stars rotate rapidly (period ≲20 days), they […]
Posted inExoplanets, -moons, -comets, Habitable Zones, Press Release, Proxima Centauri
A Terrestrial Planet Candidate in a Temperate Orbit Around Proxima Centauri
At a distance of 1.295 parsecs, the red-dwarf Proxima Centauri (α Centauri C, GL 551, HIP 70890, or simply Proxima) is the Sun’s closest stellar neighbor and one of the […]
Posted inAstronomy & Telescopes, Press Release, Proxima Centauri
Calculations of Periodicity From Hα Profiles of Proxima Centauri
We investigate retrieval of the stellar rotation signal for Proxima Centauri. We make use of high-resolution spectra taken with uves and harps of Proxima Centauri over a 13-year period as […]