Geoff Marcy

Astrometric Detection of Earthlike Planets (2009)

Shao, Michael, Marcy, Geoff, Catanzarite, Joseph H., Edberg, Stephen J., Leger, Alain, Malbet, Fabien, ...

Astrometry can detect rocky planets in a broad range of masses and orbital distances and measure their masses and three-dimensional orbital parameters, including eccentricity and inclination, to...

A determination of the spin-orbit alignment of the anomalously dense planet orbiting HD 149026 (2007)

Wolf, Aaron S., Laughlin, Gregory, Henry, Gregory W., Fischer, Debra A., Marcy, Geoff, Butler, Paul, ...

We report 35 radial velocity measurements of HD 149026 taken with the Keck Telescope. Of these measurements, 15 were made during the transit of the companion planet HD 149026b, which occurred on 2005...

A DETERMINATION OF THE SPIN-ORBIT ALIGNMENT OF THE ANOMALOUSLY DENSE PLANET ORBITING HD 149026 1 (2005)

Aaron S. Wolf, Gregory Laughlin, Gregory W. Henry, Debra A. Fischer, Geoff Marcy, Paul Butler, ...

We report 35 radial velocity measurements of HD 149026 taken with the Keck Telescope. Of these measurements, 15 were made during the transit of the companion planet HD 149026b, which occurred on 2005...

A COMPARISON OF OBSERVATIONALLY DETERMINED RADII WITH THEORETICAL RADIUS PREDICTIONS FOR SHORT-PERIOD TRANSITING EXTRASOLAR PLANETS (2004)

Gregory Laughlin, Aaron Wolf, Tonny Vanmunster, Peter Bodenheimer, Debra Fischer, Geoff Marcy, ...

Two extrasolar planets, HD 209458b and TrES-1, are currently known to transit bright parent stars for which physical properties can be accurately determined. The two transiting planets have very...