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CHIRON - A Fiber Fed Spectrometer for Precise Radial Velocities
Andrei Tokovinin, Debra A. Fischer, Marco Bonati +5
The CHIRON optical high-resolution echelle spectrometer was commissioned at the 1.5m telescope at CTIO in 2011. The instrument was designed for high throughput and stability, with…
Fiber scrambling for high-resolution spectrographs. I. Lick Observatory
Julien F. P. Spronck, Debra A. Fischer, Zachary A. Kaplan +2
In this paper, we report all results obtained with a fiber scrambler on the Hamilton spectrograph at Lick Observatory. We demonstrate an improvement in the stability of the instrum…
Search for a Scalar Axion-like Particle at 34 GHz
P. L. Slocum, O. K. Baker, J. L. Hirshfield +8
Light axion-like particles (ALPs) that couple to two photons are allowed in a number of proposed extensions to the Standard Model of elementary particles. Of particular interest fr…