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First light of the Gemini Planet Imager
- B. Macintosh, J. Graham, S. Wolff
- Physics, GeologyProceedings of the National Academy of Sciences
- 12 May 2014
Observations ofBeta Pictoris clearly detect the planet, Beta Pictoris b, in a single 60-s exposure with minimal postprocessing, and fitting the Keplerian orbit of Beta Pic b using the new position together with previous astrometry gives a factor of 3 improvement in most parameters over previous solutions.
Discovery and spectroscopy of the young jovian planet 51 Eri b with the Gemini Planet Imager
Using the Gemini Planet Imager, a Jupiter-like planet is discovered orbiting the ~20-million-year-old star 51 Eridani at a projected separation of 13 astronomical units and has a methane signature and is probably the smallest exoplanet that has been directly imaged.
The Gemini Planet Imager Exoplanet Survey: Giant Planet and Brown Dwarf Demographics from 10 to 100 au
We present a statistical analysis of the first 300 stars observed by the Gemini Planet Imager Exoplanet Survey. This subsample includes six detected planets and three brown dwarfs; from these…
Gemini Planet Imager observational calibrations I: Overview of the GPI data reduction pipeline
- M. Perrin, J. Maire, S. Wiktorowicz
- Computer ScienceAstronomical Telescopes and Instrumentation
- 8 July 2014
This paper, the first of a series, provides a broad overview of GPI data reduction, summarizes key steps, and presents the overall software framework and implementation.
Complex Spiral Structure in the HD 100546 Transitional Disk as Revealed by GPI and MagAO
We present optical and near-infrared high-contrast images of the transitional disk HD 100546 taken with the Magellan Adaptive Optics system (MagAO) and the Gemini Planet Imager (GPI). GPI data…
Orbits for the Impatient: A Bayesian Rejection-sampling Method for Quickly Fitting the Orbits of Long-period Exoplanets
A Bayesian rejection sampling algorithm designed to efficiently compute posterior distributions of orbital elements for data covering short fractions of long-period exoplanet orbits, called Orbits for the Impatient (OFTI), which converges up to several orders of magnitude faster than two implementations of MCMC.
Dynamical Constraints on the HR 8799 Planets with GPI
The HR 8799 system uniquely harbors four young super-Jupiters whose orbits can provide insights into the system’s dynamical history and constrain the masses of the planets themselves. Using the…
GPI PSF subtraction with TLOCI: the next evolution in exoplanet/disk high-contrast imaging
- C. Marois, C. Correia, R. D. de Rosa
- Physics, GeologyAstronomical Telescopes and Instrumentation
- 9 July 2014
A new algorithm, TLOCI (for Template LOCI), is designed to achieve this task by maximizing a companion signal-to-noise ratio instead of simply minimizing the noise as in the original LOCI algorithm, and has achieved impressive contrast.
SPECTROSCOPIC CHARACTERIZATION OF HD 95086 b WITH THE GEMINI PLANET IMAGER
We present new H (1.5–1.8 μm) photometric and K1 (1.9–2.2 μm) spectroscopic observations of the young exoplanet HD 95086 b obtained with the Gemini Planet Imager. The H-band magnitude has been…
A significant mutual inclination between the planets within the π Mensae system
Context. Measuring the geometry of multi-planet extrasolar systems can provide insight into their dynamical history and the processes of planetary formation. These types of measurements are…