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James Webb Finds Water In Protoplanetary Disc Of PDS 70
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New observations from the Mid-InfraRed Instrument (MIRI) on board the NASA/ESA/CSA James Webb Space Telescope have shown the existence of water vapour in the inner disc of the 370 light-year-distance system PDS 70. This is the first report of the presence of water in a disc known to contain two or more protoplanets in its terrestrial area.
This protoplanetary disc spectrum of PDS 70, collected with Webb's MIRI instrument, shows a number of water vapour emission lines.
The image displays a spectrum as a graph between the brightness of the light on the vertical y-axis and the light's wavelength in microns on the horizontal x-axis. A somewhat flat, continuous white line with a number of sharp peaks is used to represent the Webb data. A blue line depicting a water model is superimposed on the white line. The white and blue lines' slender peaks are identical. This demonstrates that Webb has found water vapour.
Credit: NASA, ESA, CSA, J. Olmsted (STScI)
This protoplanetary disc spectrum of PDS 70, collected with Webb's MIRI instrument, shows a number of water vapour emission lines.
The image displays a spectrum as a graph between the brightness of the light on the vertical y-axis and the light's wavelength in microns on the horizontal x-axis. A somewhat flat, continuous white line with a number of sharp peaks is used to represent the Webb data. A blue line depicting a water model is superimposed on the white line. The white and blue lines' slender peaks are identical. This demonstrates that Webb has found water vapour.
Credit: NASA, ESA, CSA, J. Olmsted (STScI)
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