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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…
Spatially Resolved Spectroscopy of Sub-AU-Sized Regions of T Tauri and Herbig Ae/Be Disks
J. A. Eisner, J. R. Graham, R. L. Akeson +1
We present spatially resolved near-IR spectroscopic observations of 15 young stars. Using a grism spectrometer behind the Keck Interferometer, we obtained an angular resolution of…
High Resolution K-band Spectroscopy of MWC 480 and V1331 Cyg
Joan R. Najita, Greg W. Doppmann, John S. Carr +2
We present high resolution (R=25,000-35,000) K-band spectroscopy of two young stars, MWC 480 and V1331 Cyg. Earlier spectrally dispersed (R=230) interferometric observations of MWC…
Near-Infrared Interferometric, Spectroscopic, and Photometric Monitoring of T Tauri Inner Disks
J. A. Eisner, L. A. Hillenbrand, R. J. White +3
We present high angular resolution observations with the Keck Interferometer, high dispersion spectroscopic observations with Keck/NIRSPEC, and near-IR photometric observations fro…
Interferometric Observations of Explosive Variables: V838 Mon, Nova Aql 2005, and RS Oph
Benjamin F. Lane, Alon Retter, Joshua A. Eisner +2
During the last two years we have used the Palomar Testbed Interferometer to observe several explosive variable stars, including V838 Monocerotis, V1663 Aquilae and recently RS Oph…
Constraining the Evolutionary Stage of Class I Protostars: Multi-wavelength Observations and Modeling
J. A. Eisner, L. A. Hillenbrand, John M. Carpenter +1
(abridged) We present new Keck images at 0.9 micron and OVRO 1.3 mm continuum images of five Class I protostars in the Taurus star forming region. We analyze these data in conjunct…