The orbit of the exoplanet Beta Pictoris b – The first peer-reviewed article with GPI

Following our very successful first light observing runs in late 2013, the first publication based on Gemini Planet Imager observations is now complete!  It has been accepted for publication in the Proceedings of the National Academy of Sciencesas part of a special issue on exoplanets, and is now available on Astro-ph. We report in this publication the performance of the Gemini Planet Imager based on the first light tests. The first scientific result demonstrates that right from the start, GPI has been performing well enough to yield new insights into exoplanets: Our astrometric observations from November 2013  gave us important new information on the orbit of the planet Beta Pictoris b.

Screen shot 2014-04-03 at 5.14.44 PM

Peering at Planets

Astronomers and engineers recently completed building the Gemini Planet Imager (GPI) to study distant solar systems. GPI will obtain high-resolution images of extrasolar planets by blocking the light of stars and detecting the faint thermal glow of orbiting planets.

Near-infrared image of Beta Pictoris b, an extrasolar planet approximately 60 light years away. The light of the host star, Beta Pictoris, is blocked in this image to reveal the much fainter light of the planet. Image processing by Christian Marois, NRC Canada.

GPI Technology: Gemini Planet Imager Adaptive Optics uses Boston Micromachines MEMS deformable mirror

Adapted from Boston Micromachines Corporation press release CAMBRIDGE, MA–(Marketwired – Feb 3, 2014) –

Boston Micromachines Corporation (BMC), a leading provider of MEMS-based deformable mirror (DM) products, adaptive optics (AO) systems and scientific instruments, announced on Feb. 3 2014 that its 4K-DM is currently installed and is being used in the Gemini Planet Imager (GPI). Deployed on one of the world’s largest telescopes, the 8-meter Gemini South telescope located in the Chilean Andes, GPI is a scientific instrument which detects light from extrasolar planets.

4k-dm (1)
The Boston 4K-DM made of a continuous surface, with 4092 actuators and a stroke of 3.5 μm. (Boston Micromachine)

The Next Step in Exoplanetary Science: Imaging New Worlds

In 2003, I was lucky enough to be part of a small group of astronomers that met at the University of California at Berkeley to brainstorm on an innovative idea: the design of an instrument to image and characterize planets around other stars, called exoplanets, using a telescope in the 8 – 10 meter class. A decade later, such an instrument became reality with the arrival of the Gemini Planet Imager (called also GPI, or “Gee-pie”) instrument at the Gemini South telescope in Chile.

Five known planetary systems imaged with current adaptive optics systems. Fomalhaut shown on the top-right is the only system detected with the Hubble Space Telescope. HR8799 discovery was announced in a Science article in 2008 by a team led by C. Marois including members of the GPI team (credit: C. Marois).
Five known planetary systems imaged with current adaptive optics systems. Fomalhaut shown on the top-right is the only system detected with the Hubble Space Telescope. HR8799 discovery was announced in a Science article in 2008 by a team led by C. Marois including members of the GPI team (credit: C. Marois).

A blast from the past – GPI kick-off science meeting March 2 2007

Astronomy is not only about the study of stars, the search for exoplanets, the characteristics of detectors, and the size of telescopes, it is also about human interactions. While digging through my old email for a document, I found this group picture that was taken during our first GPI Science meeting at University of California at Berkeley in 2007.

Group picture from the GPI Kick-off meeting (March 2 2007). From left to right, back: M. Perrin, XXXXX, C. Marois, R. Doyon, X. Song, J. Graham, G. Marcy, G. Serabyn, L. Palmer, R. Makidon, XXXX, F. Marchis, P. Kalas, B. Macintosh
Group picture from the GPI Kick-off meeting (March 2 2007). back row, from left to right: M. Perrin, XXXXX, C. Marois, R. Doyon, M. Shao, J. Graham, G. Marcy, G. Serabyn, L. Palmer, J. Wright, J. Jensen. On the front row, from left to right: F. Marchis, P. Kalas, B. Macintosh

Progress on the GPI exoplanet imager integration

The Gemini Planet Imager (GPI) is a next generation adaptive optics instrument being built for the Gemini Observatory. This is an ambitious project with the goal of directly imaging extrasolar planets orbiting nearby stars. The instrument is currently being integrated at the University of California at Santa Cruz. After more than a year of testing in a fixed orientation in a clean room, on March 7, 2013, the 2,030 kg instrument was set up on a crane and flexure rig. In collaboration with the UCSC team, we prepared this time lapse video showing GPI being set up in its new position.

GPI instrument being set up on its flexure jig mounting (Credit: GPI consortium)

Gemini Planet Image joined the Cosmic Diary Network

The Gemini Planet Imager team is joining the Cosmic Diary Network. GPI is the next generation adaptive optics instrument being built for the Gemini South Telescope. The goal is to image extrasolar planets orbiting nearby stars. The GPI team will use this blog to show the progress on the development of this instrument and discuss the science results which will be obtained in 2013.