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Proceedings Paper

Externally dispersed interferometry for planetary studies
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Paper Abstract

We describe a plan to study the radial velocity of low mass stars and brown dwarfs using a combination of interferometry and multichannel dispersive spectroscopy, Externally Dispersed Interferometry (EDI). The EDI technology allows implementation of precision velocimetry and spectroscopy on existing moderate-resolution echelle or linear grating spectrograph over their full and simultaneous bandwidth. We intend to add EDI to the new Cornell TripleSpec infrared simultaneous JHK-band spectrograph at the Palomar Observatory 200" telescope for a science-demonstration program that will allow a unique Doppler-search for planets orbiting low mass faint M, L and T type stars. The throughput advantage of EDI with a moderate resolution spectrograph is critical to achieving the requisite sensitivity for the low luminosity late L and T dwarfs.

Paper Details

Date Published: 14 September 2005
PDF: 12 pages
Proc. SPIE 5905, Techniques and Instrumentation for Detection of Exoplanets II, 59050R (14 September 2005); doi: 10.1117/12.617879
Show Author Affiliations
David J. Erskine, Lawrence Livermore National Lab. (United States)
Jerry Edelstein, Univ. of California, Berkeley (United States)
Daniel Harbeck, Univ. of California, Berkeley (United States)
James Lloyd, Cornell Univ. (United States)

Published in SPIE Proceedings Vol. 5905:
Techniques and Instrumentation for Detection of Exoplanets II
Daniel R. Coulter, Editor(s)

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