A planet about eight times the mass of Jupiter has been confirmed to orbit a Sun-like star that's some 300 times farther from its own star than Earth is from its sun.
The newly confirmed planet is the least massive planet known to orbit at such a great distance from its host star.
The discovery, first reported in September 2008 (http://craq-astro.ca/actualite2.php?num_act=19), was made using high-resolution adaptive optics technology at the Gemini Observatory. These latest results, published in the Astrophysical Journal, were led by David Lafrenière of the University of Montreal Department of Physics and a researcher at the Center for Research in Astrophysics of Quebec.
The suspected planetary system required further observations to confirm that the planet and star were indeed moving through space together. "Back in 2008 what we knew for sure was that there was this young planetary mass next to a young Sun-like star," says Lafrenière. The extreme proximity of the two objects strongly suggested that they were associated and not just aligned by chance.
"Our new observations rule out this chance alignment possibility, and thus confirms that the planet and the star are related to each other," says Lafrenière.
With its initial detection by the team using the Gemini Observatory in April of 2008 this object became the first likely planet known to orbit a sun-like star that was revealed by direct imaging. At the time of its discovery the team also obtained a spectrum of the planet and was able to determine many of its characteristics, which are confirmed in this new work.
"In retrospect, this makes our initial data the first spectrum of a confirmed exoplanet ever," says Lafrenière, adding the images show water vapor, carbon monoxide and molecular hydrogen in the planet's atmosphere.
David Lafrenière, along with René Doyon and Christian Marois, received the 2009 NSERC John C. Polanyi Award for capturing the first-ever image of a planetary system outside of our own solar system.
On the Web:GEMINI : www.gemini.edu
Olivier Hernandez | EurekAlert!
NASA's Fermi catches gamma-ray flashes from tropical storms
25.04.2017 | NASA/Goddard Space Flight Center
DGIST develops 20 times faster biosensor
24.04.2017 | DGIST (Daegu Gyeongbuk Institute of Science and Technology)
More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.
Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...
Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.
"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...
The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.
Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...
The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...
Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.
Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...
20.04.2017 | Event News
18.04.2017 | Event News
03.04.2017 | Event News
25.04.2017 | Physics and Astronomy
25.04.2017 | Materials Sciences
25.04.2017 | Life Sciences