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ALMA observes a ring around the bright star Fomalhaut | ESO


ALMA observes a ring around the bright star Fomalhaut ESO

"This view shows a new picture of the dust ring around the bright star Fomalhaut from the Atacama Large Millimeter/submillimeter Array (ALMA). The underlying blue picture shows an earlier picture obtained by the NASA/ESA Hubble Space Telescope. The new ALMA image has given astronomers a major breakthrough in understanding a nearby planetary system and provided valuable clues about how such systems form and evolve. Note that ALMA has so far only observed a part of the ring."

Credit:ALMA (ESO/NAOJ/NRAO). Visible light image: the NASA/ESA Hubble Space Telescope

Source: http://www.eso.org/public/images/eso1216...

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It's gorgeous but what made them choose these colors for the pic?

Or are they really those colors in visible light?

As said in the description, the blue shows data from Hubble, the HST works in visible light, but I think here the color was chosen to have a better contrast with the rest of the picture.

For the orange part that is from ALMA, I think it was observed in Infra Red, wavelengths larger than red which can't seen by the human eyes, so they just put red/orange as it's the farther we can see.

Got it. The description was a little vague and my understanding is that most Hubble images start as black and white, and then get colored according to rules like the ones you just described.

Yep that's how it works.

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