62 citations · 279 across the 16 of their papers we have counts for
18 papers
First Direct Identification of a Multi-Star Microlens System Hosting a Planet
Sean K. Terry, David P. Bennett, Jean-Philippe Beaulieu +11
Nearly 25 years have passed since gravitational microlensing delivered its first exoplanet discoveries. The relative proper motion between lens and source systems allows them to be…
TASSIE: a TASmanian Search for Inclined Exoplanets
T. Plunkett, A. A. Cole, J. P. Beaulieu +5
We present the first results of a pilot 'TASmanian Search for Inclined Exoplanets' (TASSIE) program. This includes observations and analysis of five short-period exoplanet candidat…
MOA-2010-BLG-328: Keck and HST Expose the Limits of Occams Razor in Microlensing
Aikaterini Vandorou, David P. Bennett, Jean-Philippe Beaulieu +7
We present high resolution follow-up data of the planetary microlensing event MOA-2010-BLG-328, using Keck and the Hubble. Keck data, taken 8 years after the event, reveal a strong…
OGLE-2014-BLG-1760: A Jupiter-Sun analogue residing in the Galactic Bulge
Natalia E. Rektsini, Clement Ranc, Naoki Koshimoto +11
We present the analysis of OGLE-2014-BLG-1760, a planetary system in the galactic bulge. We combine Keck Adaptive Optics follow-up observations in -band with re-reduced light cu…
Development of Radar and Optical Tracking of Near-Earth Asteroids at the University of Tasmania
Oliver James White, Guifré Molera Calvés, Shinji Horiuchi +9
We detail the use of the University of Tasmania's (UTAS) optical and radio telescopes to conduct observations of near-Earth asteroids from 2021 to 2024. The Canberra Deep Space Com…
The Hubble Space Telescope Survey of M31 Satellite Galaxies IV. Survey Overview and Lifetime Star Formation Histories
A. Savino, D. R. Weisz, A. E. Dolphin +35
From orbits of HST imaging, we present deep homogeneous resolved star color-magnitude diagrams that reach the oldest main sequence turnoff and uniformly measured star forma…
A Candidate High-Velocity Exoplanet System in the Galactic Bulge
Sean K. Terry, Jean-Philippe Beaulieu, David P. Bennett +11
We present an analysis of adaptive optics (AO) images from the Keck-I telescope of the microlensing event MOA-2011-BLG-262. The original discovery paper by Bennett et al. 2014 repo…
The JWST Resolved Stellar Populations Early Release Science Program VII. Stress Testing the NIRCam Exposure Time Calculator
A. Savino, M. Gennaro, A. E. Dolphin +19
We empirically assess estimates from v3.0 of the JWST NIRCam Exposure Time Calculator (ETC) using observations of resolved stars in Local Group targets taken as part of the Resolve…
Unveiling MOA-2007-BLG-192: An M Dwarf Hosting a Likely Super-Earth
Sean K. Terry, Jean-Philippe Beaulieu, David P. Bennett +15
We present an analysis of high angular resolution images of the microlensing target MOA-2007-BLG-192 using Keck adaptive optics and the Hubble Space Telescope. The planetary host s…
Precise mass measurement of OGLE-2013-BLG-0132/MOA-2013-BLG-148: a Saturn mass planet orbiting an M-dwarf
Natalia E. Rektsini, Virginie Batista, Clement Ranc +10
We revisit the planetary microlensing event OGLE-2013-BLG-0132/MOA-2013-BLG-148 using Keck adaptive optics imaging in 2013 with NIRC2 and in 2020, 7.4 years after the event, with O…
Confirmation of the Stellar Binary Microlensing Event, Macho 97-BLG-28
Joshua W. Blackman, Jean-Philippe Beaulieu, Andrew A. Cole +5
The high-magnification microlensing event MACHO-97-BLG-28 was previously determined to be a binary system composed either of two M dwarfs, or an M dwarf and a brown dwarf. We prese…
Combining Spitzer parallax and Keck II adaptive optics imaging to measure the mass of a solar-like star orbited by a cold gaseous planet discovered by microlensing
J. -P. Beaulieu, V. Batista, D. P. Bennett +16
To obtain accurate mass measurements for cold planets discovered by microlensing, it is usually necessary to combine light curve modeling with at least two lens mass-distance relat…
DDO216-A1: a central globular cluster in a low-luminosity transition type galaxy
Andrew A. Cole, Daniel R. Weisz, Evan D. Skillman +11
We confirm that the object DDO216-A1 is a substantial globular cluster at the center of Local Group galaxy DDO216 (the Pegasus dwarf irregular), using Hubble Space Telescope ACS im…
Red Giants in the Small Magellanic Cloud. II. Metallicity Gradient and Age-Metallicity Relation
P. D. Dobbie, A. A. Cole, A. Subramaniam +1
We present results from the largest CaII triplet line metallicity study of Small Magellanic Cloud (SMC) field red giant stars to date, involving 3037 objects spread across approxim…
Microlensing Discovery of a Population of Very Tight, Very Low-mass Binary Brown Dwarfs
J. -Y. Choi, C. Han, A. Udalski +121
Although many models have been proposed, the physical mechanisms responsible for the formation of low-mass brown dwarfs are poorly understood. The multiplicity properties and minim…
Star Formation History in two fields of the Small Magellanic Cloud Bar
M. Cignoni, A. A. Cole, M. Tosi +5
The Bar is the most productive region of the Small Magellanic Cloud in terms of star formation but also the least studied one. In this paper we investigate the star formation histo…
Characterizing Low-Mass Binaries From Observation of Long Time-scale Caustic-crossing Gravitational Microlensing Events
I. -G. Shin, C. Han, J. -Y. Choi +119
Despite astrophysical importance of binary star systems, detections are limited to those located in small ranges of separations, distances, and masses and thus it is necessary to u…
A close look at the Centaurus A group of galaxies III. Recent star formation histories of late-type dwarfs around M83
D. Crnojević, E. K. Grebel, A. A. Cole
We study the resolved stellar populations of dwarf galaxies in the nearby Centaurus A/M83 group of galaxies. Our goal is to characterize their evolutionary history and to investiga…