Image of Alice in Wonderland at the Mad Hatter's tea party You are cordially invited to afternoon tea and biscuits wine and chocolate

Astronomy Tea Talks at Caltech

Mondays, Hameetman auditorium (Cahill)
Tea:  4.00pm
Talk: 4.15pm

Organized by:

2010 - 2011 season:
6 December 2010 Philip Muirhead (Cornell)

'Precise Near-Infrared Radial Velocities with the TripleSpec Exoplanet Discovery Instrument (TEDI)'


Attaining 10 m/s of Doppler velocity precision with near-infrared
(NIR) spectroscopy enables the detection and mass measurement of
terrestrial-mass and larger exoplanets orbiting mid-to-late M dwarf
stars. This is especially exciting considering that JWST has the
sensitivity to detect oxygen, an indicator of life, in the atmospheres
of terrestrial planets transiting mid-to-late M dwarfs. TEDI is an
instrument on the Palomar Hale Telescope designed to measure precise
NIR radial velocities. It is the combination of an variable-delay
interferometer and TripleSpec, a resolution 2700 spectrograph covering
1.0 to 2.5 microns simultaneously. TEDI underwent a significant
upgrade in 2010, with a new high-speed guiding system and fiber relay.
I will present results from 3 TEDI runs in 2010b since the upgrade
and discuss future directions for NIR radial velocimetry and the
significant advantages of this technique.

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Last modified on 20th Jul 2011 by Dominik A. Riechers.  

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