The composition of a star that should not exist

An ancient star in the constellation of Leo (The Lion), called SDSS J102915+172927, has been found to have the lowest amount of elements heavier than helium of all stars yet studied. The pie-chart shows the star’s composition: it is almost entirely made from hydrogen and helium with only a tiny trace of heavier elements.

Credit:

ESO/Digitized Sky Survey 2

About the Image

Id:eso1132b
Type:Observation
Release date:31 August 2011, 19:00
Related releases:eso1132
Size:1452 x 969 px

About the Object

Name:SDSS J102915+172927
Type:Milky Way : Star
Category:Stars

Image Formats

Large JPEG
229.6 KB
Screensize JPEG
112.9 KB

Colours & filters

BandTelescope
Optical
B
Digitized Sky Survey 2
Optical
Pseudogreen (B+R)
Digitized Sky Survey 2
Optical
R
Digitized Sky Survey 2