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Monochromatic globular clusters as a critical test of formation models for the dark matter-deficient galaxies NGC 1052-DF2 and NGC 1052-DF4

It was recently proposed that the dark matter-deficient ultradiffuse galaxies DF2 and DF4 in the NGC 1052 group could be the products of a “bullet dwarf” collision between two gas-rich progenitor galaxies. In this model, DF2 and DF4 formed at the same time in the immediate aftermath of the collision...

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Main Authors: Dokkum, Pieter van (Author) , Shen, Zili (Author) , Romanowsky, Aaron J. (Author) , Abraham, Roberto (Author) , Conroy, Charlie (Author) , Danieli, Shany (Author) , Chowdhury, Dhruba Dutta (Author) , Keim, Michael A. (Author) , Kruijssen, Diederik (Author) , Leja, Joel (Author) , Trujillo-Gomez, Sebastian (Author)
Format: Article (Journal)
Language:English
Published: 2022 November 15
In: The astrophysical journal. Part 2, Letters
Year: 2022, Volume: 940, Issue: 1, Pages: 1-9
ISSN:2041-8213
DOI:10.3847/2041-8213/ac94d6
Online Access:Resolving-System, lizenzpflichtig, Volltext: https://doi.org/10.3847/2041-8213/ac94d6
Verlag, lizenzpflichtig, Volltext: https://iopscience.iop.org/article/10.3847/2041-8213/ac94d6
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Author Notes:Pieter van Dokkum, Zili Shen, Aaron J. Romanowsky, Roberto Abraham, Charlie Conroy, Shany Danieli, Dhruba Dutta Chowdhury, Michael A. Keim, J.M. Diederik Kruijssen, Joel Leja, and Sebastian Trujillo-Gomez
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Summary:It was recently proposed that the dark matter-deficient ultradiffuse galaxies DF2 and DF4 in the NGC 1052 group could be the products of a “bullet dwarf” collision between two gas-rich progenitor galaxies. In this model, DF2 and DF4 formed at the same time in the immediate aftermath of the collision, and a strong prediction is that their globular clusters should have nearly identical stellar populations. Here we test this prediction by measuring accurate V 606 − I 814 colors from deep HST/ACS imaging.
Item Description:Gesehen am 31.01.2023
Physical Description:Online Resource
ISSN:2041-8213
DOI:10.3847/2041-8213/ac94d6

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