Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21740101m&link_type=abstract
American Astronomical Society, AAS Meeting #217, #401.01; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
Precision radial velocities in the near infrared can help detect terrestrial mass planets around mid and late M dwarfs that are typically too faint in the optical for effective monitoring. We have demonstrated 10-15 m/s radial velocity precision in the NIR Y band with our warm-bench fiber-fed Pathfinder instrument at the 9m Hobby Eberly telescope, and will present these results as well as discuss results from the first on-sky observations with an H band laser frequency comb. We will also present the instrumental upgrades and modification to Pathfinder that have made high NIR velocity precision possible with the use of new calibration sources like Uranium lamps and laser combs. The ability to achieve this level of precision with a test bed bodes well for a stabilized spectrograph built on these principles, and we discuss progress toward this as well as challenges like modal noise and telluric absorption correction.
Bender Christian
Botzer Brandon
Diddams Scott
Mahadevan Suvrath
Osterman Steve
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