ASTRA: ASTrometry and phase-Referencing Astronomy on the Keck interferometer

Abstract

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 observation of YSOs), dual-field phase referencing (sensitive AGN observations), and astrometric (known exoplanetary systems characterization and galactic center general relativity in strong field regime) capabilities. With the first high spectral resolution mode now offered to the community, this contribution focuses on the progress of the dual field and astrometric modes.

10 pages, 6 figures, 2 tables, SPIE 2010

References in corpus (2)

• Spatially and Spectrally Resolved Hydrogen Gas within 0.1 AU of T Tauri and Herbig Ae/Be Stars
• Science with the Keck Interferometer ASTRA Program

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• ARMADA I: Triple Companions Detected in B-Type Binaries alpha Del and nu Gem
• Disentangling Confused Stars at the Galactic Center with Long Baseline Infrared Interferometry
• Phase-referenced Interferometry and Narrow-angle Astrometry with SUSI