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The LCOGT Network
A. Shporer, T. Brown, T. Lister +5
Motivated by the increasing need for observational resources for the study of time varying astronomy, the Las Cumbres Observatory Global Telescope (LCOGT) is a private foundation,…
A ground-based measurement of the relativistic beaming effect in a detached double WD binary
Avi Shporer, David L. Kaplan, Justin D. R. Steinfadt +3
We report on the first ground-based measurement of the relativistic beaming effect (aka Doppler boosting). We observed the beaming effect in the detached, non-interacting eclipsing…
A sub-Saturn Mass Planet, MOA-2009-BLG-319Lb
N. Miyake, T. Sumi, Subo Dong +119
We report the gravitational microlensing discovery of a sub-Saturn mass planet, MOA-2009-BLG-319Lb, orbiting a K or M-dwarf star in the inner Galactic disk or Galactic bulge. The h…
Orbital Orientations of Exoplanets: HAT-P-4b is Prograde and HAT-P-14b is Retrograde
Joshua N. Winn, Andrew W. Howard, John Asher Johnson +9
We present observations of the Rossiter-McLaughlin effect for two exoplanetary systems, revealing the orientations of their orbits relative to the rotation axes of their parent sta…
A Possible Tilted Orbit of the Super-Neptune HAT-P-11b
Teruyuki Hirano, Norio Narita, Avi Shporer +3
We report the detection of the Rossiter-McLaughlin effect for the eccentric, super-Neptune exoplanet HAT-P-11b, based on radial velocity measurements taken with HDS mounted on the…
The Oblique Orbit of the Super-Neptune HAT-P-11b
Joshua N. Winn, John Asher Johnson, Andrew W. Howard +6
We find the orbit of the Neptune-sized exoplanet HAT-P-11b to be highly inclined relative to the equatorial plane of its host star. This conclusion is based on spectroscopic observ…