Northwestern University

Fri 12:00 PM

CIERA Special Seminar: Wei Zhu, "Detection of a 1 Earth-mass Planet at 1 AU around a Brown Dwarf"

When: Friday, April 21, 2017
12:00 PM - 1:00 PM  

Where: Technological Institute, F160, 2145 Sheridan Road, Evanston, IL 60208 map it

Audience: Faculty/Staff - Student - Post Docs/Docs - Graduate Students

Contact: Gretchen Oehlschlager   847.467.1338

Group: CIERA - Center for Interdisciplinary Exploration and Research in Astrophysics

Category: Lectures & Meetings

More Info


Wei Zhu (Ohio State)

Host: Fred Rasio

Detection of a 1 Earth-mass Planet at 1 AU around a Brown Dwarf

We report the discovery of a 1 Earth-mass planet in a 1 AU orbit around a brown dwarf host using the microlensing parallax method (arXiv:1703.08548). This is the third published planet from the on-going Spitzer microlensing program. I will first explain the principle behind the microlensing parallax method and, in particular, why it can measure the masses in a model independent way. Then I will present some significant and unique discoveries from the Spitzer microlensing program, and discuss our future plans. The status of the K2 microlensing program (K2 campaign 9) and its scientific potential will also be discussed.

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