43 citations · 103 across the 4 of their papers we have counts for
4 papers
ASTRA: ASTrometry and phase-Referencing Astronomy on the Keck interferometer
J. Woillez, R. Akeson, M. Colavita +24
ASTRA (ASTrometric and phase-Referencing Astronomy) is an upgrade to the existing Keck Interferometer which aims at providing new self-phase referencing (high spectral resolution o…
First faint dual-field phase-referenced observations on the Keck interferometer
Julien Woillez, Peter Wizinowich, Rachel Akeson +19
Ground-based long baseline interferometers have long been limited in sensitivity by the short integration periods imposed by atmospheric turbulence. The first observation fainter t…
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'…
Astrometry with the Keck-Interferometer: the ASTRA project and its science
Jorg-Uwe Pott, Julien Woillez, Rachel L. Akeson +22
The sensitivity and astrometry upgrade ASTRA of the Keck Interferometer is introduced. After a brief overview of the underlying interferometric principles, the technology and conce…