Image of the binary star D9 close to Sagittarius A*

D9 is the first star pair ever found near Sagittarius A*, the supermassive black hole at the centre of the Milky Way. This image shows an emission line of hydrogen mapped by the SINFONI instrument on ESO’s Very Large Telescope. The instrument provides a spectrum for every single pixel; over the years, the emission around D9 was found to oscillate periodically towards red and blue wavelengths, which revealed that D9 is actually two stars orbiting each other. D9 is the orange patch near the top right of the image, to the left of a brighter and slightly bigger patch. Sagittarius A* is located almost in the middle of the image.

Credit:

ESO/F. Peißker et al.

About the Image

Id:eso2418c
Type:Observation
Release date:17 December 2024, 17:00
Related releases:eso2418
Size:955 x 947 px

About the Object

Name:D9
Type:Milky Way : Star : Grouping : Binary
Category:Stars

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