399 citations · 7.3k across the 144 of their papers we have counts for
14 papers · 1 filter
A Model-Independent Mass and Moderate Eccentricity for Pic b
Trent J. Dupuy, Timothy D. Brandt, Kaitlin M. Kratter +1
We use a cross-calibration of Hipparcos and Gaia DR2 astrometry for Pic to measure the mass of the giant planet Pic b in a comprehensive joint orbi…
Isochronal age-mass discrepancy of young stars: SCExAO/CHARIS integral field spectroscopy of the HIP 79124 triple system
Ruben Asensio-Torres, Thayne Currie, Markus Janson +24
We present SCExAO/CHARIS 1.1--2.4 micron integral field direct spectroscopy of the young HIP 79124 triple system. HIP 79124 is a member of the Scorpius-Centaurus association, consi…
The Hipparcos-Gaia Catalog of Accelerations
Timothy D. Brandt
This paper presents a cross-calibrated catalog of Hipparcos and Gaia astrometry to enable their use in measuring changes in proper motion, i.e., accelerations in the plane of the s…
Multi-epoch Direct Imaging and Time-Variable Scattered Light Morphology of the HD 163296 Protoplanetary Disk
Evan A. Rich, John P. Wisniewski, Thayne Currie +58
We present H-band polarized scattered light imagery and JHK high-contrast spectroscopy of the protoplanetary disk around HD 163296 observed with the HiCIAO and SCExAO/CHARIS instru…
Precise Dynamical Masses of Directly Imaged Companions from Relative Astrometry, Radial Velocities, and Hipparcos-Gaia DR2 Accelerations
Timothy D. Brandt, Trent J. Dupuy, Brendan P. Bowler
We measure dynamical masses for five objects--three ultracool dwarfs, one low-mass star, and one white dwarf--by fitting orbits to a combination of the Hipparcos-Gaia Catalog of Ac…
SCExAO/CHARIS Near-IR High-Contrast Imaging and Integral Field Spectroscopy of the HIP 79977 Debris Disk
Sean Goebel, Thayne Currie, Olivier Guyon +13
We present new, near-infrared (1.1--2.4 ) high-contrast imaging of the bright debris disk surrounding HIP 79977 with the Subaru Coronagraphic Extreme Adaptive Optics system (SC…
SCExAO/CHARIS Near-Infrared Direct Imaging, Spectroscopy, and Forward-Modeling of kappa And b: A Likely Young, Low-Gravity Superjovian Companion
Thayne Currie, Timothy D. Brandt, Taichi Uyama +30
We present SCExAO/CHARIS high-contrast imaging/ integral field spectroscopy of And b, a directly-imaged low-mass companion orbiting a nearby B9V star. We detect And b…
Direct Imaging in Reflected Light: Characterization of Older, Temperate Exoplanets With 30-m Telescopes
Etienne Artigau, Rebecca A. Bernstein, Timothy Brandt +22
Direct detection, also known as direct imaging, is a method for discovering and characterizing the atmospheres of planets at intermediate and wide separations. It is the only means…
Orbital characterization of GJ1108A system, and comparison of dynamical mass with model-derived mass for resolved binaries
T. Mizuki, M. Kuzuhara, K. Mede +55
We report an orbital characterization of GJ1108Aab that is a low-mass binary system in pre-main-sequence phase. Via the combination of astrometry using adaptive optics and radial v…
The Planetary Systems Imager: 2-5 Micron Channel
Andrew J. Skemer, Deno Stelter, Dimitri Mawet +15
We summarize the red channel (2-5 micron) of the Planetary Systems Imager (PSI), a proposed second-generation instrument for the TMT. Cold exoplanets emit the majority of their lig…
The GJ 504 system revisited. Combining interferometric, radial velocity, and high contrast imaging data
M. Bonnefoy, K. Perraut, A. -M. Lagrange +79
The G-type star GJ504A is known to host a 3 to 35 MJup companion whose temperature, mass, and projected separation all contribute to make it a test case for the planet formation th…
High-contrast Polarimetry Observation of T Tau Circumstellar Environment
Yi Yang, Satoshi Mayama, Saeko S. Hayashi +52
We conducted high-contrast polarimetry observations of T Tau in the H-band, using the HiCIAO instrument mounted on the Subaru Telescope, revealing structures as near as 0.$\arcsec$…
Subaru/HiCIAO imaging of LkH 330 - multi-band detection of the gap and spiral-like structures
Taichi Uyama, Jun Hashimoto, Takayuki Muto +56
We present - and -bands observations of the LkH 330 disk with a multi-band detection of the large gap and spiral-like structures. The morphology of the outer disk…
Laboratory and On-Sky Validation of the Shaped Pupil Coronagraph's Sensitivity to Low-Order Aberrations With Active Wavefront Control
Thayne Currie, N. Jeremy Kasdin, Tyler Groff +10
We present early laboratory simulations and extensive on-sky tests validating of the performance of a shaped pupil coronagraph (SPC) behind an extreme-AO corrected beam of the Suba…