Justin's Home Page - Welcome
Contact Information:
Office: California Institute of Technology
Cahill Center for Astronomy & Astrophysics
Address: 1200 E. California Blvd.
Pasadena, CA 91125
Phone: (626) 395-5754
Fax: (626) 568-9352
Email: jcrepp [at] astro.caltech.edu
I am a senior postdoctoral scholar at the California Institute of Technology. My research involves developing the technology to detect and characterize extrasolar planets and brown dwarfs. I use adaptive optics, coronagraphs, integral field spectrographs, and advanced data processing algorithms to directly image substellar companions and to study their atmospheres. I also use the Doppler method to measure the radial velocity ("wobble") of stars as they gravitationally
interact with their planets, and am currently leading a multi-disciplinary observing program that combines these two powerful and complementary techniques. The goal of the program is to calculate planet and brown dwarf masses independent of their spectrum, in order to explicitly calibrate theoretical atmospheric models. I am a member of the PALM-3000 "extreme" adaptive optics team, the Project 1640 high-contrast imaging survey at Palomar, the California Planet Search at Keck, and the MARVELS
multi-object radial velocity program at Sloan. I also use adaptive optics to follow-up Kepler objects of interest (KOI's), in order to identify false-positive signals that could mimic transiting planet events.
I received my PhD in astronomy from the University of Florida in 2008. Prior to graduate school,
I studied physics at Penn State earning a bachelors degree in 2003.
Click here to view my NASA ADS list of publications.