The radial velocity method (artist’s impression)

The radial velocity method to detect exoplanet is based on the detection of variations in the velocity of the central star, due to the changing direction of the gravitational pull from an (unseen) exoplanet as it orbits the star. When the star moves towards us, its spectrum is blueshifted, while it is redshifted when it moves away from us. By regularly looking at the spectrum of a star - and so, measure its velocity - one can see if it moves periodically due to the influence of a companion.

Oikeudet:

ESO

Kuvasta

Tunnistus:eso0722e
Tyyppi:Kuvitus
Julkaisupäivä:25. huhtikuuta 2007
Vastaavat julkaisut:eso0722
Koko:2374 x 1773 px

Kohteesta

Nimi:Radial velocity
Tyyppi:Unspecified : Planet
Kategoria:Cosmology
Illustrations

Kuvaformaatit

Suuri JPEG
339,4 KB
Kokoruudun JPEG
94,6 KB

Taustakuvat

1024x768
106,7 KB
1280x1024
157,1 KB
1600x1200
197,2 KB
1920x1200
255,0 KB
2048x1536
287,6 KB

 

Katso myös