131 citations · 1.1k across the 67 of their papers we have counts for
23 papers · 1 filter
The Keck-HGCA Pilot Survey II: Direct Imaging Discovery of HD 63754 B, a ~20 au Massive Companion Near the Hydrogen Burning Limit
Yiting Li, Timothy D. Brandt, Kyle Franson +15
We present the joint astrometric and direct imaging discovery, mass measurement, and orbital analysis of HD 63754 B (HIP 38216 B), a companion near the stellar-substellar boundary…
Subaru/CHARIS High-Resolution Mode Spectroscopy of the Brown Dwarf Companion HD 33632 Ab
Aidan Gibbs, Briley Lewis, Michael Fitzgerald +6
Brown dwarfs (BD) are model degenerate in age and mass. High-contrast imaging and spectroscopy of BD companions to host stars where the mass and age can be independently constraine…
A Wolf 359 in sheep's clothing: Hunting for substellar companions in the fifth-closest system using combined high-contrast imaging and radial velocity analysis
Rachel Bowens-Rubin, Joseph M. Akana Murphy, Philip M. Hinz +16
Wolf 359 (CN Leo, GJ 406, Gaia DR3 3864972938605115520) is a low-mass star in the fifth-closest neighboring system (2.41 pc). Because of its relative youth and proximity, Wolf 359…
Astrometric Accelerations as Dynamical Beacons: A Giant Planet Imaged Inside the Debris Disk of the Young Star AF Lep
Kyle Franson, Brendan P. Bowler, Yifan Zhou +13
We present the direct imaging discovery of a giant planet orbiting the young star AF Lep, a 1.2 member of the 24 3 Myr Pic moving group. AF Lep was observed a…
Battle of the Predictive Wavefront Controls: Comparing Data and Model-Driven Predictive Control for High Contrast Imaging
J. Fowler, Maaike A. M. Van Kooten, Rebecca Jensen-Clem
Ground-based high contrast exoplanet imaging requires state-of-the-art adaptive optics (AO) systems in order to detect extremely faint planets next to their brighter host stars. Fo…
Precise Masses and Orbits for Nine Radial Velocity Exoplanets
Yiting Li, Timothy D. Brandt, G. Mirek Brandt +6
Radial velocity (RV) surveys have discovered hundreds of exoplanetary systems but suffer from a fundamental degeneracy between planet mass and orbital inclination . In thi…
The Bright Pyramid Wavefront Sensor
Benjamin L. Gerard, Vincent Chambouleyron, Rebecca Jensen-Clem +1
Extreme adaptive optics (AO) is crucial for enabling the contrasts needed for ground-based high contrast imaging instruments to detect exoplanets. Pushing exoplanet imaging detecti…
A survey of the linear polarization of directly imaged exoplanets and brown dwarf companions with SPHERE-IRDIS. First polarimetric detections revealing disks around DH Tau B and GSC 6214-210 B
R. G. van Holstein, T. Stolker, R. Jensen-Clem +22
Young giant planets and brown dwarf companions emit near-infrared radiation that can be linearly polarized up to several percent. This polarization can reveal the presence of a cir…
Early High-contrast Imaging Results with Keck/NIRC2-PWFS: The SR 21 Disk
Taichi Uyama, Bin Ren, Dimitri Mawet +22
High-contrast imaging of exoplanets and protoplanetary disks depends on wavefront sensing and correction made by adaptive optics instruments. Classically, wavefront sensing has bee…
Keck/NIRC2 '-Band Imaging of Jovian-Mass Accreting Protoplanets around PDS 70
Jason J. Wang, Sivan Ginzburg, Bin Ren +42
We present '-band imaging of the PDS 70 planetary system with Keck/NIRC2 using the new infrared pyramid wavefront sensor. We detected both PDS 70 b and c in our images, as well…
A Hot Saturn Near (but unassociated with) the Open Cluster NGC 1817
Rayna Rampalli, Andrew Vanderburg, Allyson Bieryla +14
We report on the discovery of a hot Saturn-sized planet (9.916 +/- 0.985 R_earth) around a late F star, EPIC 246865365, observed in Campaign 13 of the K2 mission. We began studying…
The Need for Laboratory Measurements and Ab Initio Studies to Aid Understanding of Exoplanetary Atmospheres
Jonathan J. Fortney, Tyler D. Robinson, Shawn Domagal-Goldman +85
We are now on a clear trajectory for improvements in exoplanet observations that will revolutionize our ability to characterize their atmospheric structure, composition, and circul…
The Demographics and Atmospheres of Giant Planets with the ELTs
Brendan Bowler, Steph Sallum, Alan Boss +23
Gas giants are the most readily detectable exoplanets but fundamental questions about their system architectures, formation, migration, and atmospheres have been unanswerable with…
Deep exploration of Eridani with Keck Ms-band vortex coronagraphy and radial velocities: mass and orbital parameters of the giant exoplanet
Dimitri Mawet, Lea Hirsch, Eve J. Lee +27
We present the most sensitive direct imaging and radial velocity (RV) exploration of Eridani to date. Eridani is an adolescent planetary system, reminiscent of the early So…
Robo-AO Kepler Survey V: The effect of physically associated stellar companions on planetary systems
Carl Ziegler, Nicholas M. Law, Christoph Baranec +7
The Kepler light curves used to detect thousands of planetary candidates are susceptible to dilution due to blending with previously unknown nearby stars. With the automated laser…
Robo-AO Kepler Survey IV: the effect of nearby stars on 3857 planetary candidate systems
Carl Ziegler, Nicholas M. Law, Christoph Baranec +7
We present the overall statistical results from the Robo-AO Kepler planetary candidate survey, comprising of 3857 high-angular resolution observations of planetary candidate system…
Deep imaging search for planets forming in the TW Hya protoplanetary disk with the Keck/NIRC2 vortex coronagraph
G. Ruane, D. Mawet, J. Kastner +10
Distinct gap features in the nearest protoplanetary disk, TW Hya (distance of 59.50.9 pc), may be signposts of ongoing planet formation. We performed long-exposure thermal inf…
Evidence that the Directly-Imaged Planet HD 131399 Ab is a Background Star
Eric L. Nielsen, Robert J. De Rosa, Julien Rameau +55
We present evidence that the recently discovered, directly-imaged planet HD 131399 Ab is a background star with non-zero proper motion. From new JHK1L' photometry and spectroscopy…
Ultra Short Period Planets in K2 with companions: a double transiting system for EPIC 220674823
Elisabeth R. Adams, Brian Jackson, Michael Endl +10
Two transiting planets have been identified orbiting K2 target EPIC 220674823. One object is an ultra-short-period planet (USP) with a period of just 0.57 days (13.7 hours), while…
Two Small Planets Transiting HD 3167
Andrew Vanderburg, Allyson Bieryla, Dmitry A. Duev +10
We report the discovery of two super-Earth-sized planets transiting the bright (V = 8.94, K = 7.07) nearby late G-dwarf HD 3167, using data collected by the K2 mission. The inner p…
Five Planets Transiting a Ninth Magnitude Star
Andrew Vanderburg, Juliette C. Becker, Martti H. Kristiansen +15
The Kepler mission has revealed a great diversity of planetary systems and architectures, but most of the planets discovered by Kepler orbit faint stars. Using new data from the K2…
Point Source Polarimetry with the Gemini Planet Imager: Sensitivity Characterization with T5.5 Dwarf Companion HD 19467 B
Rebecca Jensen-Clem, Max Millar-Blanchaer, Dimitri Mawet +12
Detecting polarized light from self-luminous exoplanets has the potential to provide key information about rotation, surface gravity, cloud grain size, and cloud coverage. While fi…
Pictoris' inner disk in polarized light and new orbital parameters for Pictoris b
Maxwell A. Millar-Blanchaer, James R. Graham, Laurent Pueyo +54
We present -band observations of Pic with the Gemini Planet Imager's (GPI's) polarimetry mode that reveal the debris disk between ~0.3" (~6 AU) and ~1.7" (~33 AU), while sim…