Transit technique

Definition

The transit technique is a method for detecting exoplanets by observing the dimming of a star as a planet passes in front of it. This periodic dimming indicates the presence and properties of the planet.

5 Must Know Facts For Your Next Test

1. The transit technique measures the light curve of a star to detect dips in brightness caused by an orbiting planet.
2. It allows astronomers to determine the size and orbital period of the exoplanet.
3. The Kepler Space Telescope has discovered thousands of exoplanets using the transit method.
4. This technique is more likely to detect planets that have short orbital periods, making multiple transits observable over shorter timescales.
5. Transit photometry can be complemented with radial velocity measurements to estimate an exoplanet's mass and density.

Related terms

Radial Velocity Method:

A technique used to detect exoplanets by measuring variations in the host star's spectrum due to gravitational interactions with orbiting planets.

Light Curve:

A graph showing how a star's brightness changes over time, often used in detecting transits.

Kepler Space Telescope:

A space observatory launched by NASA specifically designed to discover Earth-like planets using the transit method.