NICOLAS ROLLAND · ASTROPHOTOGRAPHY
The Cartwheel Galaxy, ESO 350-40, a ring galaxy shaped by a head-on collision

HUBBLE & JWST

The Cartwheel Galaxy (ESO 350-40)

A ring galaxy shaped by a head-on collision, from Hubble and Webb data.

The Cartwheel is a ring galaxy, and rings of this kind are made by collisions. A smaller galaxy passed through this one near its centre, and the shock drove a wave of star formation outward — the bright ring is that wave, still expanding.

This image combines two telescopes and twenty-eight years. Hubble recorded the visible light in 1994; Webb added the infrared in 2022, where the dust and the hot young stars in the ring show through. It is the only page on this site built from two instruments a generation apart.
Version française
La Roue de chariot est une galaxie annulairedont ce genre d'anneaux naissent de collisions. Une galaxie plus petite est passée à travers celle-ci près de son centre, et le choc a propagé une vague de formation d'étoiles vers l'extérieur — l'anneau brillant est cette vague, toujours en expansion.
 
Cette image combine deux télescopes et vingt-huit ans. Hubble a enregistré la lumière visible en 1994 ; Webb a ajouté l'infrarouge en 2022, où la poussière et les étoiles jeunes de l'anneau apparaissent. C'est la seule page de ce site construite à partir de deux instruments séparés d'une génération.
Instrument
Hubble Space Telescope · WFPC2 · James Webb Space Telescope · NIRCam
Programme
Proposal ID 05410 (HST) · Proposal ID 02727 (JWST)
Filters
F450W · F814W · F150W
Date
October 16, 1994 · June 12, 2022
Distance
500 million light-years
Colour
Infrared F150W Red F814W Green synthetic Blue F450W
Credit
NASA, ESA, CSA. Data obtained from MAST.
RA00h 37m 41s Dec−33° 42′ 59″ ConstellationSculptor

Processed by Nicolas Rolland, Paris. Data from the NASA/ESA Hubble Space Telescope and the NASA/ESA/CSA James Webb Space Telescope, obtained from MAST.

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