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    Ultra-Diffuse Galaxies tagged posts

    Creating Ultra-Diffuse Galaxies

    November 5, 2021, Categories  Astronomy/Space

    Creating Ultra-Diffuse Galaxies | Center for Astrophysics
    An optical image of the ultra-diffuse galaxy GMP 4348 in the Coma cluster of galaxies; the scale bar shows a distance of thirty-two thousand light-years. In a spectroscopic study of eleven such galaxies, astronomers have concluded that ram-stripping of gas led these galaxies to shut down star formation and expand, turning them into ultra-diffuse galaxies.

    Ultra-diffuse galaxies (UDGs) have very low luminosities, comparatively few stars, and little star-formation activity as compared with normal galaxies of similar sizes...

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