%ADanieli, Shany%Avan Dokkum, Pieter%ATrujillo-Gomez, Sebastian%AKruijssen, J.%ARomanowsky, Aaron%ACarlsten, Scott%AShen, Zili%ALi, Jiaxuan%AAbraham, Roberto%ABrodie, Jean%AConroy, Charlie%AGannon, Jonah%AGreco, Johnny%BJournal Name: The Astrophysical Journal Letters; Journal Volume: 927; Journal Issue: 2; Related Information: CHORUS Timestamp: 2024-01-08 10:49:56 %D2022%IDOI PREFIX: 10.3847 %JJournal Name: The Astrophysical Journal Letters; Journal Volume: 927; Journal Issue: 2; Related Information: CHORUS Timestamp: 2024-01-08 10:49:56 %K %MOSTI ID: 10364237 %PMedium: X; Size: Article No. L28 %TNGC 5846-UDG1: A Galaxy Formed Mostly by Star Formation in Massive, Extremely Dense Clumps of Gas %X
It has been shown that ultra-diffuse galaxies (UDGs) have higher specific frequencies of globular clusters, on average, than other dwarf galaxies with similar luminosities. The UDG NGC 5846-UDG1 is among the most extreme examples of globular cluster–rich galaxies found so far. Here we present new Hubble Space Telescope observations and analysis of this galaxy and its globular cluster system. We find that NGC 5846-UDG1 hosts 54 ± 9 globular clusters, three to four times more than any previously known galaxy with a similar luminosity and higher than reported in previous studies. With a galaxy luminosity of