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.

Källa:

ESO

Om bilden

ID:eso0722e
Typ:Illustration
Publiceringsdatum:25 april 2007
Relaterade pressmeddelanden:eso0722
Storlek:2374 x 1773 px

Om objektet

Namn:Radial velocity
Typ:Unspecified : Planet
Kategori:Cosmology
Illustrations

Bildformat

Stor jpeg
339,4 kB
Skärmstor jpeg
94,6 kB

Skrivbordsunderlägg

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

 

Se även