122 citations · 571 across the 11 of their papers we have counts for
9 papers · 1 filter
Still at Odds with Conventional Galaxy Evolution: The Star Formation History of Ultra-Diffuse Galaxy Dragonfly 44
Kristi A. Webb, Alexa Villaume, Seppo Laine +7
We study the star formation history (SFH) of the ultra-diffuse galaxy (UDG) Dragonfly 44 (DF44) based on the simultaneous fit to near-ultraviolet to near-infrared photometry and hi…
Spatially Resolved Stellar Spectroscopy of the Ultra-diffuse Galaxy Dragonfly 44. III. Evidence for an Unexpected Star-Formation History
Alexa Villaume, Aaron J. Romanowsky, Jean Brodie +6
We use the Keck Cosmic Web Imager integral-field unit spectrograph to: 1) measure the global stellar population parameters for the ultra-diffuse galaxy (UDG) Dragonfly 44 (DF44) to…
The Dark Matter Distributions in Low-Mass Disk Galaxies. II. The Inner Density Profiles
Nicole C. Relatores, Andrew B. Newman, Joshua D. Simon +8
Dark matter-only simulations predict that dark matter halos have steep, cuspy inner density profiles, while observations of dwarf galaxies find a range of inner slopes that are oft…
Spatially Resolved Stellar Kinematics of the Ultra-Diffuse Galaxy Dragonfly 44: II. Constraints on Fuzzy Dark Matter
Asher Wasserman, Pieter van Dokkum, Aaron J. Romanowsky +9
Given the absence of directly detected dark matter (DM) as weakly interacting massive particles, there is strong interest in the possibility that DM is an ultra-light scalar field,…
Spatially-resolved stellar kinematics of the ultra diffuse galaxy Dragonfly 44. I. Observations, kinematics, and cold dark matter halo fits
Pieter van Dokkum, Asher Wasserman, Shany Danieli +8
We present spatially-resolved stellar kinematics of the well-studied ultra diffuse galaxy (UDG) Dragonfly 44, as determined from 25.3 hrs of observations with the Keck Cosmic Web I…
Discovery of a Lya emitting dark-cloud within z ~ 2.8 SMMJ02399-0136 system
Qiong Li, Zheng Cai, J. Xavier Prochaska +9
We present Keck/KCWI integral field spectrograph observations of the complex system surrounding SMM J023990136 (a lensed sub-mm galaxy), including an associated Ly$\rm α…
Keck/Palomar Cosmic Web Imagers (KCWI/PCWI) Reveal an Enormous Ly Nebula in an Extremely Overdense QSO Pair Field at
Zheng Cai, Erika Hamden, Matt Matuszewski +10
Enormous Ly nebulae (ELANe) represent the extrema of Ly nebulosities. They have detected extents of kpc in Ly and Ly luminosities erg s. The EL…
IGM Emission Observations with the Cosmic Web Imager: II. Discovery of Extended, Kinematically-Linked Emission around SSA22 Lyman-alpha Blob 2
D. Christopher Martin, Daphne Chang, Matt Matuszewski +5
The intergalactic medium (IGM) is the dominant reservoir of baryons, delineates the large scale structure at low to moderate overdensities, and provides gas from which galaxies for…
IGM Emission Observations with the Cosmic Web Imager: I. The Circum-QSO Medium of QSO 1549+19, and Evidence for a Filamentary Gas Inflow
D. Christopher Martin, Daphne Chang, Matt Matuszewski +4
The Palomar Cosmic Web Imager (PCWI), an integral field spectrograph designed to detect and map low surface brightness emission, has obtained imaging spectroscopic maps of Ly-alpha…