ARIEL

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ARIEL: Atmospheric Remote-sensing Infrared Exoplanet Large-survey)

by Ruth Titz-Weider (DLR), August 2024

ARIEL is an ESA space mission scheduled for launch in 2029. It is intended to determine the chemical composition and temperature profile in the atmospheres of many exoplanets, be they rocky planets or gas giants. The instrument is a telescope with an aperture of around one metre and has two spectrometers that operate in the infrared wavelength range.

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Oben sieht man, wie das licht eines Sterns durch ein stilisiertes Prisma in seine Farben aufgebrochen wird. Daneben das ungestörte Sternenlichtspektrum in Diagrammform. Unten fällt das Sternenlicht erst durch die Atmosphäre eines Sterns, bevor es durch das Prisma aufgefächert wird. Einige Linien in dem Farbspektrum sind schwarz. Danabene das auf diese Art beeinflusste Sternenpektrum in Diagrammform, mit gut sichtbaren Absorptionslineien.

Observing exo-atmospheres

by Ludwig Scheibe | Nov 20, 2024 | All,All about exoplanets,Detection methods | 0 Comments

by Ludwig Scheibe (TU Berlin), November 2024 A planet’s atmosphere, that means the gas layer that envelopes it, provides us with valuable information about the...

Spectroscopy

by Tanja Schumann | May 8, 2024 | All,All about exoplanets,Detection methods | 0 Comments

The Spectrum of light and what it tells us by Ludwig Scheibe (TU Berlin), July 2024 One fundamental and essential tool in the study of exoplanets is the study of light...

Exoplanet systems

by Md Bayazid Bostame | Feb 12, 2024 | All,All about exoplanets,Multiple planet systems | 0 Comments

by Ludwig Scheibe & Tanja Schumann (TU Berlin), September 2022Credit: nasa.govDefinition: The planets of our Solar System are ordered a certain way: closest to the...

Astrometry

by admin | Mar 10, 2023 | All,Astrometry,Detection methods | 0 Comments

How it works: Like the radial velocity method, this technique makes use of the fact that star and planet both orbit a shared center of mass. For systems that we look at...

Direct Imaging

by admin | Mar 10, 2023 | All,Detection methods,Direct Imaging | 0 Comments

by Ludwig Scheibe (TU Berlin), October 2024 Without a lot of prior knowledge, upon hearing "discovering planets around other stars" most people would probably think...

Gravitational lensing

by admin | Mar 10, 2023 | All,Detection methods,Gravitational lensing | 0 Comments

How it works: According to Einstein’s general theory of relativity, time and space are merged into one quantity called spacetime. Under this theory, massive objects...

Transit method

by admin | Mar 10, 2023 | All,Detection methods,Transit method | 0 Comments

by Ludwig Scheibe (TU Berlin), October 2024 Imaging an exoplanet directly is a difficult process that is only doable in a select few cases. Thus, we need indirect...

Radial velocity method

by admin | Mar 10, 2023 | All,Detection methods,Radial velocity | 0 Comments

by Ludwig Scheibe (TU Berlin), September 2024 Because the direct imaging of planets around other stars is only feasible in select cases, the question arises: How, then,...

Neptune-sized planets

by admin | Mar 9, 2023 | All,All about exoplanets,Exoplanet types,Neptune-sized | 0 Comments

by Ludwig Scheibe (TU Berlin), October 2024 On the grand size scale between massive gas giants and smaller super-Earths, we find a class of medium-sized planets: Worlds...