Colloquium today at 3:45pm with Cullen Blake (University of Pennsylvania)

[Patterson, Robin L.]

Please join us for the Physics Colloquium today, at 3:45 PM in The Robert Smith Seminar Room. There will be a reception at 3:30PM in the Atrium. Details concerning the talk are as follows:

Speaker:         Cullen Blake (University of Pennsylvania)
Date:               Tuesday, April 2, 2019
Time:              3:45PM
Place:             1080 Physics Research Building, The Robert Smith Seminar Room
Title:                Next-generation Doppler Spectrometers

Abstract:  The Doppler technique is a key tool for discovering and characterizing planets orbiting other stars. By measuring the reflex motion of the host star as the star and planet orbit a common center of mass, "extrasolar" planets can be discovered and, in some cases, the masses of those planets directly measured. Over the past three decades, advances in technology have enabled some spectrometers to achieve 1 m/s radial velocity precision for Sun-like stars.  However, detecting analogs of any of the terrestrial planets in our solar system will require substantially better precision - Earth induces a 10 cm/s motion in the Sun. It has been a long-term goal in the community to achieve Doppler measurement precision sufficient to detect an Earth analog, but a host of astrophysical and instrumental noise sources become important below 1 m/s. I will describe two upcoming Doppler spectrometers designed for detecting and characterizing small planets - NEID, which will be deployed this year to the WIYN telescope at Kitt Peak in Arizona, and MINERVA-Red, which will also be deployed this year to Mt. Hopkins in Arizona.
The website for the colloquium is https://physics.osu.edu/physics-colloquium-schedule


Also, there is the speaker/student discussion starting just after the colloquium, at 4:45pm in the Smith Seminar Room.



Robin
[The Ohio State University]
Robin Patterson
Program Coordinator
Department of Physics
1040K Physics Research Building, 191 W. Woodruff Avenue, Columbus, OH 43210
(614) 292-8523 Office     (614) 292-7557 Fax
patterson.716 at osu.edu<mailto:patterson.716 at osu.edu> osu.edu<http://osu.edu/>

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