Discovery and spectroscopy of the young jovian planet 51 Eri b with the Gemini Planet Imager

Autor: J. Brewster, Kimberly Ward-Duong, Tushar Mittal, J. Lee, Roman R. Rafikov, Naru Sadakuni, Daniel C. Fabrycky, R. Murray-Clay, Franck Marchis, Joanna Bulger, James E. Larkin, Li-Wei Hung, M. Johnson-Groh, James R. Graham, S. Thomas, Bruce Macintosh, Maria Teresa Ruiz, Inseok Song, Tara Cotten, Barry Zuckerman, Z. H. Draper, Dave Palmer, Rebekah I. Dawson, Jennifer Patience, Gaspard Duchêne, Michael R. Line, Sasha Hinkley, Julien Rameau, Stanimir Metchev, Fredrik T. Rantakyrö, Quinn Konopacky, Christine Chen, Christian Marois, Katherine B. Follette, A. Z. Greenbaum, Abhijith Rajan, Jérôme Maire, Steven V. W. Beckwith, Sloane J. Wiktorowicz, Sebastian Bruzzone, René Doyon, Pauline Arriaga, Jeffrey Chilcote, J. J. Fortney, Marshall D. Perrin, Anand Sivaramakrishnan, Didier Saumon, Jean-Baptiste Ruffio, Étienne Artigau, Claire E. Max, Thomas M. Esposito, Max Millar-Blanchaer, Rebecca Oppenheimer, Dmitry Savransky, P. Hibon, Schuyler Wolff, Adam Burrows, R. J. De Rosa, Katie M. Morzinski, Patricio Rojo, Travis Barman, Rémi Soummer, David Lafrenière, Brenda C. Matthews, Ben Burningham, Alex Rudy, Caroline V. Morley, Jason J. Wang, Leslie Saddlemyer, Laurent Pueyo, Douglas Long, Michael P. Fitzgerald, S. Goodsell, M. Salama, Eugene Chiang, Paul Kalas, Mark Ammons, Mark S. Marley, James K. Wallace, Emily L. Rice, Ruobing Dong, Eric L. Nielsen, B. L. Gerard, Patrick Ingraham, Adam C. Schneider, Lisa Poyneer, Gautam Vasisht, Rahul Patel
Rok vydání: 2015
Předmět:
spectroscopy
photometry
010504 meteorology & atmospheric sciences
near infrared spectroscopy
General Science & Technology
Astrophysics::High Energy Astrophysical Phenomena
sun
Astronomical unit
FOS: Physical sciences
Astrophysics::Cosmology and Extragalactic Astrophysics
telescope
01 natural sciences
Spectral line
Jovian
Photometry (optics)
Planet
water vapor
0103 physical sciences
Astrophysics::Solar and Stellar Astrophysics
Gemini Planet Imager
010303 astronomy & astrophysics
Astrophysics::Galaxy Astrophysics
0105 earth and related environmental sciences
Physics
Earth and Planetary Astrophysics (astro-ph.EP)
Multidisciplinary
luminance
methane
imaging method
Astronomy
molecular weight
planetary evolution
Effective temperature
contrast
Exoplanet
astronomy
air temperature
planet
13. Climate action
Jupiter
astro-ph.EP
Astrophysics::Earth and Planetary Astrophysics
absorption
Astrophysics - Earth and Planetary Astrophysics
Zdroj: Science (New York, N.Y.), vol 350, iss 6256
Science
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
Popis: Directly detecting thermal emission from young extrasolar planets allows measurement of their atmospheric composition and luminosity, which is influenced by their formation mechanism. Using the Gemini Planet Imager, we discovered a planet orbiting the \$sim$20 Myr-old star 51 Eridani at a projected separation of 13 astronomical units. Near-infrared observations show a spectrum with strong methane and water vapor absorption. Modeling of the spectra and photometry yields a luminosity of L/LS=1.6-4.0 x 10-6 and an effective temperature of 600-750 K. For this age and luminosity, "hot-start" formation models indicate a mass twice that of Jupiter. This planet also has a sufficiently low luminosity to be consistent with the "cold- start" core accretion process that may have formed Jupiter.
Comment: 29 pages, 3 figures, 2 tables, and Supplementary Materials. published in Science Express on Aug 13 2015. List of authors and the magnitudes of the star were correted
Databáze: OpenAIRE
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