1.6k citations · 15.8k across the 171 of their papers we have counts for
11 papers · 1 filter
Improving Galactic Center Astrometry by Reducing the Effects of Geometric Distortion
Sylvana Yelda, Jessica R. Lu, Andrea M. Ghez +4
We present significantly improved proper motion measurements of the Milky Way's central stellar cluster. These improvements are made possible by refining our astrometric reference…
Science with the Keck Interferometer ASTRA Program
J. A. Eisner, R. Akeson, M. Colavita +9
The ASTrometric and phase-Referenced Astronomy (ASTRA) project will provide phase referencing and astrometric observations at the Keck Interferometer, leading to enhanced sensitivi…
Probing local density inhomogeneities in the circumstellar disk of a Be star using the new spectro-astrometry mode at the Keck interferometer
J. -U. Pott, J. Woillez, S. Ragland +23
We report on the successful science verification phase of a new observing mode at the Keck interferometer, which provides a line-spread function width and sampling of 150km/s at K'…
Recent Results and Perspectives for Precision Astrometry and Photometry with Adaptive Optics
Jessica R. Lu, Andrea M. Ghez, Sylvana Yelda +4
Large ground-based telescopes equipped with adaptive optics (AO) systems have ushered in a new era of high-resolution infrared photometry and astrometry. Relative astrometric accur…
The infrared imaging spectrograph (IRIS) for TMT: the science case
Elizabeth J. Barton, James E. Larkin, Anna M. Moore +11
The InfraRed Imaging Spectrograph (IRIS) is a first-light instrument being designed for the Thirty Meter Telescope (TMT). IRIS is a combination of an imager that will cover a 16.4"…
Disks in the Arches cluster -- survival in a starburst environment
Andrea Stolte, Mark Morris, Andrea Ghez +6
Deep Keck/NIRC2 HK'L' observations of the Arches cluster near the Galactic center reveal a significant population of near-infrared excess sources. We combine the L'-band excess obs…