Giant collision created galaxies devoid of dark matter

Article Multidisciplinary Sciences

A trail of dark-matter-free galaxies from a bullet-dwarf collision

Pieter van Dokkum et al.

Summary: The ultra-diffuse galaxies DF2 and DF4 in the NGC 1052 group share several unusual properties and may have formed in the aftermath of high-velocity collisions of gas-rich galaxies. They are part of a trail of dark-matter-free galaxies that formed from the same event.

NATURE (2022)

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Article Astronomy & Astrophysics

Discovery and analysis of low-surface-brightness galaxies in the environment of NGC 1052

Javier Roman et al.

Summary: The recent study on the environment of NGC 1052 has revealed a number of low-surface-brightness galaxies (LSBGs) with exotic properties, most of which were previously undetected. Among the newly detected objects, RCP 32 stands out with extreme properties, making it one of the lowest surface brightness galaxies ever detected through integrated photometry.

ASTRONOMY & ASTROPHYSICS (2021)

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Article Astronomy & Astrophysics

Dark Matter Deficient Galaxies and Their Member Star Clusters Form Simultaneously during High-velocity Galaxy Collisions in 1.25 pc Resolution Simulations

Joohyun Lee et al.

Summary: Our study shows that high-velocity galaxy collisions may induce the formation of dark matter deficient galaxies and their star clusters simultaneously, providing insights into the mystery of how these galaxies are formed.

ASTROPHYSICAL JOURNAL LETTERS (2021)

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Article Astronomy & Astrophysics