Here I list some current and past projects, with the most relevant publications for each of them. If you have questions please email me.

Stellar Multiplicity with the Sloan Digital Sky Survey

The Sloan Digital Sky Survey has collected millions of spectra of individual objects, from quasars to galaxies and stars. Most of these spectra have multiple visits, and it is possible to study them to look for variations in radial velocity (RV) due to the presence of an unseen binary companion. I have been involved in several efforts to use these data to improve our knowledge of stellar multiplicity.

NEWS: I am proud to announce that I have become an Associate Member of the fifth installment of SDSS, SDSS-V, scheduled to begin operations in 2020. This continues the historical involvement of Pitt in SDSS, which started back in 2003. SDSS-V will revolutionize our knowledge of the stellar content of the Milky Way, so stay tuned for developments!

Supernova Remnants

Supernova Remnants are the end products of Supernova explosions. Observations of SNRs in the Local Group offer a unique view of Supernovae, complementary to optical studies of distant objects.

Prospective Students

If you are interested in any of these research projects, I would be happy to talk to you. If you want to work with me as a graduate student, keep in mind that first you need to be admitted into our Graduate Program. You can find detailed instructions on how to apply here.


This research is supported by grants from NASA, NSF and the Research Corporation.