Eric Mamajek
Professor (Research) of
Physics and Astronomy
University of Rochester

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Artist's conception of J1407 eclipsing ring system by Ron Miller
Help characterize the eclipsing extrasolar ring system J1407 through AAVSO!

In 2016, I moved to Jet Propulsion Laboratory to start a new position as Deputy Program Chief Scientist of the NASA Exoplanet Exploration Program (ExEP).

FAQ on Scholz's Star

The BRING experiment is under way, as part of an international campaign to photometrically monitor the bright star Beta Pic in 2017-2018 to search for signs of circumplanetary material. UR PhD student Sam Mellon led the construction of the BRING robotic observatory installed at Siding Spring, Australia.

My von Karman Lecture: "Exoplanets: The Quest for Strange New Worlds", January 12, 2017

Press on Eclipsing Ring System J1407 (2015), Closest Known Flyby of a Star to the Solar System (Scholz's star; 2015), and discovery of Comet Cameron-ISON (2016)

Stars: Stellar Color/Teff Table, Spectral Type Notes, Online Material
Sun: Notes on the Sun, Notes on G2V stars, Reconstruction of the Past Sun (supplement to Tarduno+2014)
UR: Physics & Astronomy Department, UR Physics & Astronomy Major & Minor, General Advice for students, Summer Research, Graduate Program, PHY & AST courses, UR Physics & Astro Visitor's Info
Publications: ADS sorted by # of citations, ADS 1st-author only sorted by # citations, ADS sorted by date


My primary research interests are the formation and evolution of exoplanets and stars in our Galactic neighborhood. My recent and on-going research projects and collaborations involve quantifying and trying to understand the evolution of protoplanetary and dusty debris disks around normal stars, improving distance and age estimates to astrophysically interesting stellar, protostellar, substellar, and planetary systems, and surveys to image extrasolar planets and substellar companions to nearby stars in the near- and thermal infrared. I also recently discovered a few new nearby young stellar groups in the solar neighborhood within a few hundred parsecs of the Sun, and I am interested in investigating the recent star-formation history and kinematics of the solar neighborhood and what it can inform us about star-formation mechanisms.


I'm an active supporter of the International Astronomical Union (IAU), and I am the chair and organizer of the new IAU Division C Working Group on Star Names (WGSN) which researches historical and cultural proper names of stars, and maintains the IAU catalog of star names. A summary of the Working Group's activities appears PR. Recently (2015), I was chair of the Inter-Division A-G Working Group on Nominal Units for Stellar & Planetary Astronomy, which proposed IAU 2015 Resolution B2 on recommended zero points for the absolute and apparent bolometric magnitude scales and IAU 2015 Resolution B3 on recommended nominal conversion constants for selected solar and planetary properties - both of which passed the XXIXth General Assembly in Honolulu by large majorities.