714 citations · 5.3k across the 103 of their papers we have counts for
50 papers · 1 filter
Probing Disk Ice Content and PAH Emission Through Multiband MagAO+Clio Images of HD 141569
Jay K. Kueny, Alycia J. Weinberger, Jared R. Males +4
We present resolved images of the inner disk component around HD 141569 using the Magellan adaptive optics system with the Clio2 1 - 5 m camera, offering a glimpse of a complex…
Improved companion mass limits for Sirius A with thermal infrared coronagraphy using a vector-apodizing phase plate and time-domain starlight-subtraction techniques
Joseph D. Long, Jared R. Males, Sebastiaan Y. Haffert +12
We use observations with the infrared-optimized MagAO system and Clio camera in 3.9 m light to place stringent mass constraints on possible undetected companions to Sirius A. We…
The Giant Accreting Protoplanet Survey (GAPlanetS): Optimization Techniques for Robust Detections of Protoplanets
Jéa I. Adams Redai, Katherine B. Follette, Jason Wang +11
High-contrast imaging has afforded astronomers the opportunity to study light directly emitted by adolescent (tens of Myr) and ``proto" (10Myr) planets still undergoing formatio…
The Giant Accreting Protoplanet Survey (GAPlanetS) -- Results from a Six Year Campaign to Image Accreting Protoplanets
Katherine B. Follette, Laird M. Close, Jared R. Males +20
Accreting protoplanets represent a window into planet formation processes. We report Hα differential imaging results from the deepest and most comprehensive accreting protoplanet s…
Improved Orbital Constraints and H Photometric Monitoring of the Directly Imaged Protoplanet Analog HD 142527 B
William O. Balmer, Katherine B. Follette, Laird M. Close +9
Companions embedded in the cavities of transitional circumstellar disks have been observed to exhibit excess luminosity at H, an indication that they are actively accreting. We…
Characterizing microlensing planetary system OGLE-2014-BLG-0676Lb with adaptive optics imaging
Xiao-Jia Xie, Subo Dong, Yossi Shvartzvald +10
We constrain the host-star flux of the microlensing planet OGLE-2014-BLG-0676Lb using adaptive optics (AO) images taken by the Magellan and Keck telescopes. We measure the flux of…
High-contrast observations of brown dwarf companion HR 2562 B with the vector Apodizing Phase Plate coronagraph
Ben J. Sutlieff, Alexander J. Bohn, Jayne L. Birkby +8
The vector Apodizing Phase Plate (vAPP) is a class of pupil plane coronagraph that enables high-contrast imaging by modifying the Point Spread Function (PSF) to create a dark hole…
The HOSTS survey: evidence for an extended dust disk and constraints on the presence of giant planets in the Habitable Zone of Leo
D. Defrère, P. M. Hinz, G. M. Kennedy +38
The young (50-400 Myr) A3V star Leo is a primary target to study the formation history and evolution of extrasolar planetary systems as one of the few stars with known hot ($\s…
The Gemini Planet Imager Exoplanet Survey: Giant Planet and Brown Dwarf Demographics From 10-100 AU
Eric L. Nielsen, Robert J. De Rosa, Bruce Macintosh +62
We present a statistical analysis of the first 300 stars observed by the Gemini Planet Imager Exoplanet Survey (GPIES). This subsample includes six detected planets and three brown…
The LEECH Exoplanet Imaging Survey: Limits on Planet Occurrence Rates Under Conservative Assumptions
Jordan M. Stone, Andrew J. Skemer, Philip M. Hinz +33
We present the results of the largest (m) direct imaging survey for exoplanets to date, the Large Binocular Telescope Interferometer (LBTI) Exozodi Exoplanet Co…
The HOSTS Survey for Exozodiacal Dust: Preliminary results and future prospects
S. Ertel, G. M. Kennedy, D. Defrère +40
[abridged] The presence of large amounts of dust in the habitable zones of nearby stars is a significant obstacle for future exo-Earth imaging missions. We executed an N band nulli…
Magellan Adaptive Optics Imaging of PDS 70: Measuring the Mass Accretion Rate of a Young Giant Planet within a Gapped Disk
Kevin Wagner, Katherine B. Follette, Laird M. Close +11
PDS 70b is a recently discovered and directly imaged exoplanet within the wide (40 au) cavity around PDS 70 (Keppler et al. 2018, Müller et al. 2018). Ongoing accretion on…
Finding and Characterizing Other Worlds: the Thermal-IR ELT Opportunity
Michael R. Meyer, Thayne Currie, Olivier Guyon +7
The next generation ground-based extremely large telescopes (ELTs) present incredible opportunities to discover and characterize diverse planetary systems, even potentially habitab…
Improving and Assessing Planet Sensitivity of the GPI Exoplanet Survey with a Forward Model Matched Filter
Jean-Baptiste Ruffio, Bruce Macintosh, Jason J. Wang +49
We present a new matched filter algorithm for direct detection of point sources in the immediate vicinity of bright stars. The stellar Point Spread Function (PSF) is first subtract…
Characterizing 51 Eri b from 1-5 m: a partly-cloudy exoplanet
Abhijith Rajan, Julien Rameau, Robert J. De Rosa +58
We present spectro-photometry spanning 1-5 m of 51 Eridani b, a 2-10 M planet discovered by the Gemini Planet Imager Exoplanet Survey. In this study, we present new…
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…
An Optical/near-infrared investigation of HD 100546 b with the Gemini Planet Imager and MagAO
Julien Rameau, Katherine B. Follette, Laurent Pueyo +52
We present H band spectroscopic and Halpha photometric observations of HD 100546 obtained with GPI and MagAO. We detect H band emission at the location of the protoplanet HD 100546…
Complex Spiral Structure in the HD 100546 Transitional Disk as Revealed by GPI and MagAO
Katherine B. Follette, Julien Rameau, Ruobing Dong +53
We present optical and near-infrared high contrast images of the transitional disk HD 100546 taken with the Magellan Adaptive Optics system (MagAO) and the Gemini Planet Imager (GP…
1 to 2.4 micron Near-IR spectrum of the Giant Planet Pictoris b obtained with the Gemini Planet Imager
Jeffrey Chilcote, Laurent Pueyo, Robert J. De Rosa +61
Using the Gemini Planet Imager (GPI) located at Gemini South, we measured the near-infrared (1.0-2.4 micron) spectrum of the planetary companion to the nearby, young star Picto…
MagAO Imaging of Long-period Objects (MILO). II. A Puzzling White Dwarf around the Sun-like Star HD 11112
Timothy J. Rodigas, P. Bergeron, Amelie Simon +18
HD 11112 is an old, Sun-like star that has a long-term radial velocity (RV) trend indicative of a massive companion on a wide orbit. Here we present direct images of the source res…
Imaging protoplanets: observing transition disks with non-redundant masking
Steph Sallum, Josh Eisner, Laird M. Close +17
Transition disks, protoplanetary disks with inner clearings, are promising objects in which to directly image forming planets. The high contrast imaging technique of non-redundant…
Magellan AO System , , and Observations of the Very Wide 650 AU HD 106906 Planetary System
Ya-Lin Wu, Laird M. Close, Vanessa P. Bailey +8
We analyze archival data from Bailey and co-workers from the adaptive optics system and present the first 0.9 m detection ( mag; mag…
Constraints on the architecture of the HD 95086 planetary system with the Gemini Planet Imager
Julien Rameau, Eric L. Nielsen, Robert J. De Rosa +31
We present astrometric monitoring of the young exoplanet HD 95086 b obtained with the Gemini Planet Imager between 2013 and 2016. A small but significant position angle change is d…
Spectroscopic characterization of HD 95086 b with the Gemini Planet Imager
Robert J. De Rosa, Julien Rameau, Jenny Patience +33
We present new (1.5-1.8 m) photometric and (1.9-2.2 m) spectroscopic observations of the young exoplanet HD 95086 b obtained with the Gemini Planet Imager. The -…