TY - JOUR
T1 - Astrometry with the Keck Interferometer
T2 - The ASTRA project and its science
AU - Pott, Jorg Uwe
AU - Woillez, Julien
AU - Akeson, Rachel L.
AU - Berkey, Ben
AU - Colavita, Mark M.
AU - Cooper, Andrew
AU - Eisner, Josh A.
AU - Ghez, Andrea M.
AU - Graham, James R.
AU - Hillenbrand, Lynne
AU - Hrynewych, Michael
AU - Medeiros, Drew
AU - Millan-Gabet, Rafael
AU - Monnier, John
AU - Morrison, Douglas
AU - Panteleeva, Tatyana
AU - Quataert, Eliot
AU - Randolph, Bill
AU - Smith, Brett
AU - Summers, Kellee
AU - Tsubota, Kevin
AU - Tyau, Colette
AU - Weinberg, Nevin
AU - Wetherell, Ed
AU - Wizinowich, Peter L.
N1 - Funding Information:
The W.M. Keck Observatory is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W.M. Keck Foundation. The authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain. The Keck Interferometer is funded by the National Aeronautics and Space Administration . The ASTRA upgrade is funded by the Major Research Instrumentation Program of the National Science Foundation .
PY - 2009
Y1 - 2009
N2 - The sensitivity and astrometry upgrade ASTRA of the Keck Interferometer is introduced. After a brief overview of the underlying interferometric principles, the technology and concepts of the upgrade are presented. The interferometric dual-field technology of ASTRA will provide the KI with the means to observe two objects simultaneously, and measure the distance between them with a precision eventually better than 100 μas. This astrometric functionality of ASTRA will add a unique observing tool to fields of astrophysical research as diverse as exo-planetary kinematics, binary astrometry, and the investigation of stars accelerated by the massive black hole in the center of the Milky Way as discussed in this contribution.
AB - The sensitivity and astrometry upgrade ASTRA of the Keck Interferometer is introduced. After a brief overview of the underlying interferometric principles, the technology and concepts of the upgrade are presented. The interferometric dual-field technology of ASTRA will provide the KI with the means to observe two objects simultaneously, and measure the distance between them with a precision eventually better than 100 μas. This astrometric functionality of ASTRA will add a unique observing tool to fields of astrophysical research as diverse as exo-planetary kinematics, binary astrometry, and the investigation of stars accelerated by the massive black hole in the center of the Milky Way as discussed in this contribution.
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U2 - 10.1016/j.newar.2010.07.009
DO - 10.1016/j.newar.2010.07.009
M3 - Short survey
AN - SCOPUS:79251508489
SN - 1387-6473
VL - 53
SP - 363
EP - 372
JO - New Astronomy Reviews
JF - New Astronomy Reviews
IS - 11-12
ER -