80 citations · 177 across the 10 of their papers we have counts for
10 papers
On the correlation between globular clusters and the distribution of dark matter in galaxy clusters: the case of Abell 2744
Marta Reina-Campos, Joshua S. Speagle, William E. Harris
Globular clusters (GCs) lie scattered around the inner of the virial radius of galaxy clusters, potentially being excellent tracers of the underlying mass distribution. In t…
JWST Photometry of Globular Cluster Populations in MACS0417.5-1154
William E. Harris, Marta Reina-Campos, Kaitlyn E. Keatley +8
Deep JWST imaging of the massive galaxy cluster MACS0417.5-1154, at redshift z=0.443, reveals a huge population of globular clusters (GCs) and Ultra-Compact Dwarfs (UCDs) primarily…
PEARLS: Globular Clusters and Ultra-Compact Dwarfs in the El Gordo Galaxies at z=0.87
William E. Harris, Marta Reina-Campos, Anton M. Koekemoer +11
JWST/NIRCam 0.9 to 2.0 micron images reveal a population of point sources around the major galaxies in the El Gordo cluster at redshift z=0.87. Their distribution in the color--mag…
Globular Clusters in the Galaxy Cluster MACS0416 at z = 0.397
Jessica M. Berkheimer, Rogier A. Windhorst, William E. Harris +27
We present a photometric analysis of globular clusters (GCs) in the massive galaxy cluster MACS J0416.1-2403 (z = 0.397) using deep JWST/NIRCam imaging from the PEARLS program. PSF…
Imaging dark matter at the smallest scales with lensed stars
J. M. Diego, Sung Kei Li, Alfred Amruth +19
Observations of caustic-crossing galaxies at redshift show a wealth of transient events. Most of them are believed to be microlensing events of highly magnified stars. Ea…
JWST Photometry of Globular Clusters in Abell 2744. II: luminosity and color distributions
William E. Harris, Marta Reina-Campos
Deep JWST imaging of the giant galaxy cluster Abell 2744, at redshift , is used to explore the features of its rich population of globular clusters (GCs), building on our…
RESCUER: Cosmological K-corrections for star clusters
Marta Reina-Campos, William E. Harris
The advent of JWST (the James Webb Space Telescope) now allows entire star cluster populations to be imaged in galaxies at cosmologically significant redshifts, bringing with it th…
HST Photometry for the Halo Stars in the Leo Elliptical NGC 3377
W. E. Harris, G. L. H. Harris, A. C. Layden +1
We have used the ACS camera on HST to obtain (V,I) photometry for 57,000 red-giant stars in the halo of the Leo elliptical NGC 3377. We use this sample of stars to derive the metal…
The Leo Elliptical NGC 3379: A Metal-Poor Halo Emerges
W. E. Harris, G. L. H. Harris, A. C. Layden +1
We have used the ACS camera on HST to obtain (V,I) photometry for 5300 red-giant stars in the halo of the dominant Leo-group member NGC 3379, a galaxy usually regarded as a classic…
The Metallicity Distribution in the Outer Halo of M33
R. Scott Brooks, Christine D. Wilson, William E. Harris
We present the results of deep I and V-band photometry of the halo stars near the southeast minor axis of the Local Group spiral galaxy M33. An (I,V-I) color-magnitude diagram dist…