417 citations · 1.9k across the 74 of their papers we have counts for
13 papers · 1 filter
Efficiently Searching for Close-in Companions around Young M Dwarfs using a Multi-year PSF Library
Aniket Sanghi, Jerry Xuan, Jason Wang +7
We present Super-RDI, a unique framework for the application of reference star differential imaging (RDI) to Keck/NIRC2 high-contrast imaging observations with the vortex coronagra…
A Survey of Protoplanetary Disks Using the Keck/NIRC2 Vortex Coronagraph
Nicole L. Wallack, Jean-Baptiste Ruffio, Garreth Ruane +34
Recent Atacama Large Millimeter/submillimeter Array (ALMA) observations of protoplanetary disks in the millimeter continuum have shown a variety of radial gaps, cavities, and spira…
Imaging low-mass planets within the habitable zone of α Centauri
K. Wagner, A. Boehle, P. Pathak +39
Giant exoplanets on wide orbits have been directly imaged around young stars. If the thermal background in the mid-infrared can be mitigated, then exoplanets with lower masses can…
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…
SPHERE+: Imaging young Jupiters down to the snowline
A. Boccaletti, G. Chauvin, D. Mouillet +130
SPHERE (Beuzit et al,. 2019) has now been in operation at the VLT for more than 5 years, demonstrating a high level of performance. SPHERE has produced outstanding results using a…
Near-Infrared Imaging of a Spiral in the CQ Tau Disk
Taichi Uyama, Takayuki Muto, Dimitri Mawet +28
We present -band Keck/NIRC2 imaging and -band Subaru/AO188+HiCIAO polarimetric observations of CQ Tau disk with a new spiral arm. Apart from the spiral feature our obs…
ESA Voyage 2050 White Paper: Detecting life outside our solar system with a large high-contrast-imaging mission
Ignas Snellen, Simon Albrecht, Guillem Anglada-Escude +64
In this white paper, we recommend the European Space Agency plays a proactive role in developing a global collaborative effort to construct a large high-contrast imaging space tele…
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…
Characterizing the performance of the NIRC2 vortex coronagraph at W.M. Keck Observatory
W. Jerry Xuan, Dimitri Mawet, Henry Ngo +15
The NIRC2 vortex coronagraph is an instrument on Keck II designed to directly image exoplanets and circumstellar disks at mid-infrared bands (3.4-4.1 m) and (4.…
High-contrast imaging of HD 163296 with the Keck/NIRC2 L'-band vortex coronograph
G. Guidi, G. Ruane, J. P. Williams +16
We present observations of the nearby (D100\,pc) Herbig star HD~163296 taken with the vortex coronograph at Keck/NIRC2 in the L' band (3.7~m), to search for planetary mass…
Discovery of a point-like source and a third spiral arm in the transition disk around the Herbig Ae star MWC 758
M. Reggiani, V. Christiaens, O. Absil +20
Transition disks offer the extraordinary opportunity to look for newly born planets and investigate the early stages of planet formation. In this context we observed the Herbig A5…
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…
Discovery of a low-mass companion inside the debris ring surrounding the F5V star HD206893
Julien Milli, Pascale Hibon, Valentin Christiaens +30
Uncovering the ingredients and the architecture of planetary systems is a very active field of research that has fuelled many new theories on giant planet formation, migration, com…