-
Above-horizontal-branch (AHB) stars in Gal. GCs
We have carried out a search for above-horizontal-branch (AHB) stars-objects lying above the horizontal branch (HB) and blueward of the asymptotic giant branch (AGB) in the... -
Type Ia SNe with galaxy host properties
More luminous Type Ia supernovae prefer less massive hosts and regions of higher star formation. This correlation is inverted during width-color-luminosity light-curve... -
Galaxy-absorber pairs for low-z QSO sightlines
We present a study of candidate galaxy-absorber pairs for 43 low-redshift QSO sightlines (0.06<z<0.85) observed with the Hubble Space Telescope/Cosmic Origins Spectrograph... -
Ultra-diffuse galaxies with spectroscopic obs.
We present new redshift measurements for 19 candidate ultra-diffuse galaxies (UDGs) from the Systematically Measuring Ultra-Diffuse Galaxies (SMUDGes) survey after conducting a... -
HectoMAP Cluster Survey: clusters & BCGs
We apply a friends-of-friends (FoF) algorithm to identify galaxy clusters and we use the catalog to explore the evolutionary synergy between brightest cluster galaxies (BCGs)... -
M83 X-ray binary classifications from HST
Building on recent work by Chandar+ (2020, J/ApJ/890/150), we construct X-ray luminosity functions (XLFs) for different classes of X-ray binary (XRB) donors in the nearby... -
Massive white dwarfs in young star clusters
We have carried out a search for massive white dwarfs (WDs) in the direction of young open star clusters using the Gaia DR2 database. The aim of this survey was (1) to provide... -
RELICS 6<~z<=8 galaxies with Spitzer & HST obs.
We present constraints on the physical properties (including stellar mass, age, and star formation rate) of 207 6<=z<=8 galaxy candidates from the Reionization Lensing... -
The local universe with ZTF. I. Ca-rich gap transients
Using the Zwicky Transient Facility alert stream, we are conducting a large spectroscopic campaign to construct a complete, volume-limited sample of transients brighter than... -
X-SHOOTER/ALMA QSOs at 5.78<z<7.54. I. NIR sp.
We present X-SHOOTER near-IR spectroscopy of a large sample of 38 luminous (M_1450_=-29.0 to -24.4) quasars at 5.78<z<7.54, which have complementary [CII]158{mu}m... -
UV to visible-light observations of SN 2018fif
High-cadence transient surveys are able to capture supernovae closer to their first light than ever before. Applying analytical models to such early emission, we can constrain... -
Spectroscopy of quiescent gal. in 9 lensing clusters
We measure the central stellar velocity dispersion function for quiescent galaxies in a set of nine northern clusters in the redshift range 0.18<z<0.29 and with strong... -
Lya galaxies in 3 CFHTLS overdense regions
We have carried out follow-up spectroscopy on three overdense regions of g- and r-dropout galaxies in the Canada-France-Hawaii Telescope Legacy Survey Deep Fields, finding two... -
SDSS/FIRST dwarf galaxies with VLA high res. obs.
We present a sample of nearby dwarf galaxies with radio-selected accreting massive black holes (BHs), the majority of which are non-nuclear. We observed 111 galaxies using... -
REQUIEM survey. I. Ly{alpha} halos around QSOs
The discovery of quasars a few hundred megayears after the Big Bang represents a major challenge to our understanding of black holes as well as galaxy formation and evolution.... -
Completed KMOS^3D^ survey NIR obs.
We present the completed KMOS^3D^ survey, an integral field spectroscopic survey of 739 log(M_/M{sun})>9 galaxies at 0.6<z<2.7 using the K-band Multi Object... -
Opt. follow-up of galaxies within S190814bv region
On 2019 August 14 the Laser Interferometer Gravitational Wave Observatory (LIGO) and the Virgo gravitational wave interferometer announced the detection of a binary merger,... -
Spectra & HST obs. of gal. in 1ES1553+113 field
The relationship between galaxies and the state/chemical enrichment of the warm-hot intergalactic medium (WHIM) expected to dominate the baryon budget at low-z provides... -
ULXs with multiepoch Spitzer/IRAC obs.
We present a mid-infrared (IR) sample study of nearby ultraluminous X-ray sources (ULXs) using multiepoch observations with the Infrared Array Camera (IRAC) on the Spitzer Space... -
NGVS. XXIII. Nuclear star clusters
Using deep, high-resolution optical imaging from the Next Generation Virgo Cluster Survey, we study the properties of nuclear star clusters (NSCs) in a sample of nearly 400...