288 citations · 1.4k across the 23 of their papers we have counts for
22 papers
Constraining nearby substellar companion architectures using High Contrast Imaging, Radial Velocity and Astrometry data
L. F. Sartori, M. J. Bonse, Y. Li +3
Nearby stars offer prime opportunities for exoplanet discovery and characterization through various detection methods. By combining HCI, RV, and astrometry, it is possible to bette…
L 363-38 b: a planet newly discovered with ESPRESSO orbiting a nearby M dwarf star
Lia F. Sartori, Christophe Lovis, Jean-Baptiste Delisle +7
Context. Planets around stars in the solar neighbourhood will be prime targets for characterisation with upcoming large space- and ground-based facilities. Since large-scale exopla…
A Spatially-Resolved Survey of Distant Quasar Host Galaxies: I. Dynamics of galactic outflows
Andrey Vayner, Shelley A. Wright, Norman Murray +6
We present observations of ionized gas outflows in eleven z radio-loud quasar host galaxies. Data was taken with the integral field spectrograph (IFS) OSIRIS and the a…
Molecular mapping of the PDS70 system: No molecular absorption signatures from the forming planet PDS70 b
G. Cugno, P. Patapis, T. Stolker +7
Aims. We aim to detect molecules in the atmosphere of the young forming companion PDS70 b by searching for atmospheric absorption features typical of substellar objects. Methods. W…
Constraints on the nearby exoplanet Ind Ab from deep near/mid-infrared imaging limits
Gayathri Viswanath, Markus Janson, Carl-Henrik Dahlqvist +16
The past decade has seen increasing efforts in detecting and characterising exoplanets by high contrast imaging in the near/mid-infrared, which is the optimal wavelength domain for…
High contrast imaging at 10 microns, a search for exoplanets around: Eps Indi A, Eps Eri, Tau Ceti, Sirius A and Sirius B
P. Pathak, D. J. M. Petit dit de la Roche, M. Kasper +15
The direct imaging of rocky exoplanets is one of the major science goals for upcoming large telescopes. The contrast requirement for imaging such planets is challenging. However, t…
The vector-apodizing phase plate coronagraph: design, current performance, and future development
D. S. Doelman, F. Snik, E. H. Por +50
Over the last decade, the vector-apodizing phase plate (vAPP) coronagraph has been developed from concept to on-sky application in many high-contrast imaging systems on 8-m class t…
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…
A Spatially-Resolved Survey of Distant Quasar Host Galaxies: II. Photoionization and Kinematics of the ISM
Andrey Vayner, Shelley A. Wright, Norman Murray +6
We present detailed observations of photoionization conditions and galaxy kinematics in eleven z radio-loud quasar host galaxies. Data was taken with OSIRIS integral fi…
Combining high contrast imaging and radial velocities to constrain the planetary architecture of nearby stars
A. Boehle, S. P. Quanz, C. Lovis +3
Nearby stars are prime targets for exoplanet searches and characterization using a variety of detection techniques. Combining constraints from the complementary detection methods o…
Characterizing and Improving the Data Reduction Pipeline for the Keck OSIRIS Integral Field Spectrograph
Kelly E. Lockhart, Tuan Do, James E. Larkin +15
OSIRIS is a near-infrared (1.0--2.4 m) integral field spectrograph operating behind the adaptive optics system at Keck Observatory, and is one of the first lenslet-based integra…
PynPoint: a modular pipeline architecture for processing and analysis of high-contrast imaging data
Tomas Stolker, Markus J. Bonse, Sascha P. Quanz +4
The direct detection and characterization of planetary and substellar companions at small angular separations is a rapidly advancing field. Dedicated high-contrast imaging instrume…
Widespread Shocks in the Nucleus of NGC 404 Revealed by Near-infrared Integral Field Spectroscopy
A. Boehle, J. E. Larkin, L. Armus +1
We present high spatial resolution, integral field spectrograph (IFS) observations of the nearby LINER (low ionization nuclear emission line region) galaxy NGC 404 at 1.25 m (J…
ERIS: revitalising an adaptive optics instrument for the VLT
Richard Davies, Simone Esposito, Hans Martin Schmid +63
ERIS is an instrument that will both extend and enhance the fundamental diffraction limited imaging and spectroscopy capability for the VLT. It will replace two instruments that ar…
The Post-Periapse Evolution of Galactic Center Source G1: The second case of a resolved tidal interaction with a supermassive black hole
Gunther Witzel, Breann. N. Sitarski, Andrea M. Ghez +13
We present new Adaptive Optics (AO) imaging and spectroscopic measurements of Galactic Center source G1 from W. M. Keck Observatory. Our goal is to understand its nature and relati…
Testing the gravitational theory with short-period stars around our Galactic Center
A. Hees, A. M. Ghez, T. Do +19
Motion of short-period stars orbiting the supermassive black hole in our Galactic Center has been monitored for more than 20 years. These observations are currently offering a new…
Testing General Relativity with stellar orbits around the supermassive black hole in our Galactic center
A. Hees, T. Do, A. M. Ghez +14
In this Letter, we demonstrate that short-period stars orbiting around the supermassive black hole in our Galactic Center can successfully be used to probe the gravitational theory…
An Improved Distance and Mass Estimate for Sgr A* from a Multistar Orbit Analysis
A. Boehle, A. M. Ghez, R. Schödel +11
We present new, more precise measurements of the mass and distance of our Galaxy's central supermassive black hole, Sgr A*. These results stem from a new analysis that more than do…
Detection of Galactic Center source G2 at 3.8 m during periapse passage
Gunther Witzel, Andrea M. Ghez, Mark R. Morris +14
We report new observations of the Galactic Center source G2 from the W. M. Keck Observatory. G2 is a dusty red object associated with gas that shows tidal interactions as it nears…
The Keplerian orbit of G2
L. Meyer, A. M. Ghez, G. Witzel +8
We give an update of the observations and analysis of G2 - the gaseous red emission-line object that is on a very eccentric orbit around the Galaxy's central black hole and predict…
Keck Observations of the Galactic Center Source G2: Gas Cloud or Star?
K. Phifer, T. Do, L. Meyer +8
We present new observations and analysis of G2 - the intriguing red emission-line object which is quickly approaching the Galaxy's central black hole. The observations were obtaine…
The Shortest Known Period Star Orbiting our Galaxy's Supermassive Black Hole
L. Meyer, A. M. Ghez, R. Schoedel +7
Stars with short orbital periods at the center of our galaxy offer a powerful and unique probe of a supermassive black hole. Over the past 17 years, the W. M. Keck Observatory has…