Infrared emission from a star-forming region3D Model
This model is another representation of a star-forming region, where new stars have recently formed in clouds of gas and dust. In this phase of evolution, stars are heavily absorbed by the dense and cloudy surrounding medium and cannot be easily observed in optical light (the visible part of the spectrum). Conversely, these stars can be observed in the infrared band because the resulting infrared emission is able to pass through the dense clouds. The gas from the nebula appears to be emitting due to starlight scattered by the dust and gas in the area.
The figure below is an example of a star-forming region, RCW38, in the Milky Way at a distance of approximately 5,000 light years. The image was obtained with three near infrared filters with the VLT Infrared Spectrometer And Array Camera (ISAAC) installed at the first 8.2-m VLT Unit Telescope (UT1) .
Image credits: European Southern Observatory (ESO)
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