activity
20202026
most citedA new class of dark matter-free dwarf galaxies? I. Clues from FCC 224, NGC 1052-DF2 and NGC 1052-DF4

17 citations · 75 across the 18 of their papers we have counts for

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Showing 2025Show all

7 papers · 1 filter

astro-ph.GA2025

Connection Between Dwarf Galaxies and Globular Clusters: Insights from the Perseus Cluster Using Subaru Imaging and Keck Spectroscopy

Yimeng Tang, Aaron J. Romanowsky, Song Huang +11

We present a systematic study of 189 dwarf galaxies and their globular cluster (GC) systems in the Perseus cluster, based on deep Subaru Hyper Suprime-Cam imaging and Keck spectros…

astro-ph.GA2025

A Pearl in the Shell: an ultra-compact dwarf within the tidal debris surrounding spiral galaxy NGC 7531

David Martínez-Delgado, Aaron J. Romanowsky, Yimeng Tang +7

Stellar substructures within tidal debris preserve information about their progenitor galaxies' properties, offering insights into hierarchical mass assembly. We examine a compact…

astro-ph.GA2025★ 3 cited

Morphology and stellar populations of a candidate ultra-diffuse galaxy in early Euclid and Rubin imaging

Aaron J. Romanowsky, Yimeng Tang, Kevin A. Bundy

We present multi-wavelength imaging and analysis of a low surface brightness (LSB) dwarf galaxy in the Extended Chandra Deep Field South (ECDFS), SMDG0333094-280938, with particula…

astro-ph.GA2025★ 1 cited

Kinematic Confirmation of a Remarkable Linear Trail of Galaxies in the NGC 1052 Field, Consistent with Formation in a High-Speed Bullet Dwarf Collision

Michael A. Keim, Pieter van Dokkum, Zili Shen +6

A unique linear trail of diffuse galaxies was recently identified in the NGC 1052 field. This trail includes the remarkable, ultra-diffuse galaxies DF2 and DF4 which lack dark matt…

astro-ph.GA2025★ 6 cited

A negative stellar massgaseous metallicity gradient relation of dwarf galaxies modulated by stellar feedback

Tie Li, Hong-Xin Zhang, Wenhe Lyu +16

Baryonic cycling is reflected in the spatial distribution of metallicity within galaxies, yet gas-phase metallicity distribution and its connection with other properties of dwarf g…

astro-ph.GA2025★ 17 cited

A new class of dark matter-free dwarf galaxies? I. Clues from FCC 224, NGC 1052-DF2 and NGC 1052-DF4

Maria Luisa Buzzo, Duncan A. Forbes, Aaron J. Romanowsky +8

The discovery of quiescent, dark matter (DM)-deficient ultra-diffuse galaxies (UDGs) with overluminous globular clusters (GCs) has challenged galaxy formation models within the Lam…

astro-ph.GA2025★ 11 cited

An Unexplained Origin for the Unusual Globular Cluster System in the Ultra-diffuse Galaxy FCC 224

Yimeng Tang, Aaron J. Romanowsky, Jonah S. Gannon +9

We study the quiescent ultra-diffuse galaxy FCC 224 in the Fornax cluster using Hubble Space Telescope (HST) imaging, motivated by peculiar properties of its globular cluster (GC)…