SAINT-EX ― Search and characterisation of exoplanets

The SAINT-EX research group uses ground- and space-based observatories to search and characterise planets orbiting other stars than our sun. Our team focuses on 1) the detection of rocky exoplanets, 2) the remote sensing of planetary atmospheres/surfaces and 3) statistical analyses to understand exoplanet properties at the individual and population levels. The SAINT-EX group is also leading the development of the eponymous observatory designed to discover planets similar to the Earth orbiting in the habitable zone of their stars.

Find out more about the courses offered by the group and the currently available research positions.

Our research team is part of the Center for Space and Habitability at the University of Bern.

News

Two planets around a red dwarf

The “SAINT-EX” Observatory, led by scientists from the eponymous group, has detected two exoplanets orbiting the star TOI-1266. The Mexico-based telescope thus demonstrates its high precision and takes an important step in the quest of finding potentially habitable worlds.

Questioning theory can be worth it

Where few thought to look, the NCCR PlanetS co-funded telescope "SAINT-EX" is searching for new worlds. After a year of operation, the project has brought some exciting first results.

SAINT-EX detects the CHEOPS satellite

SAINT-EX recently detected a pass of the CHEOPS satellite while it was overflying Mexico at dawn, slightly before sunrise. These data enabled us to estimate the Vmag at 8.4, which leaves no imprint to the night sky as seen by the naked eye.

SAINT-EX Commissioning in progress

Our team was in Mexico in the past two months to install and test our robotic observatory SAINT-EX. Science operations will start in February 2019.

New insights in TRAPPIST-1 planet interiors

A new paper led by members of the SAINT-EX group is providing the most precise calculations so far of the masses of the seven planets around the star TRAPPIST-1. From this, new findings are emerging about their density and composition: All TRAPPIST-1 planets consist primarily of rock and contain up to five percent water. This is a decisive step for determining the habitability of these planets.

The race to trace TRAPPIST-1h

After 60 hours of non-stop work, members of the SAINT-EX team reached their hoped-for goal: They were the first to measure the orbital period for the outermost planet of the famous TRAPPIST-1 system which made headlines worldwide. The new result confirms that the seven Earth-size planets around the ultra-cool dwarf are lined up in a chain with resonances linking every member.

Seven terrestrial exoplanets around a nearby star

An international team of astronomers has discovered a compact analogue of our inner solar system about 40 light-years away. Members of the SAINT-EX team analysed the data collected with NASA’s Spitzer Space Telescope and calculated that the newly detected exoplanets all have masses less or similar to the Earth.

NASA's Spitzer maps climate patterns on a super-Earth

Observations from NASA's Spitzer Space Telescope have led to the first temperature map of a super-Earth planet -- a rocky planet nearly two times as big as ours. The map reveals extreme temperature swings from one side of the planet to the other, and hints that a possible reason for this is the presence of lava flows.

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