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DOI	10.1126/science.aac5891
	Discovery and spectroscopy of the young jovian planet 51 Eri b with the Gemini Planet Imager
	Macintosh B.; Graham J.R.; Barman T.; De Rosa R.J.; Konopacky Q.; Marley M.S.; Marois C.; Nielsen E.L.; Pueyo L.; Rajan A.; Rameau J.; Saumon D.; Wang J.J.; Patience J.; Ammons M.; Arriaga P.; Artigau E.; Beckwith S.; Brewster J.; Bruzzone S.; Bulger J.; Burningham B.; Burrows A.S.; Chen C.; Chiang E.; Chilcote J.K.; Dawson R.I.; Dong R.; Doyon R.; Draper Z.H.; Duchêne G.; Esposito T.M.; Fabrycky D.; Fitzgerald M.P.; Follette K.B.; Fortney J.J.; Gerard B.; Goodsell S.; Greenbaum A.Z.; Hibon P.; Hinkley S.; Cotton T.H.; Hung L.-W.; Ingraham P.; Johnson-Groh M.; Kalas P.; Lafreniere D.; Larkin J.E.; Lee J.; Line M.; Long D.; Maire J.; Marchis F.; Matthews B.C.; Max C.E.; Metchev S.; Millar-Blanchaer M.A.; Mittal T.; Morley C.V.; Morzinski K.M.; Murray-Clay R.; Oppenheimer R.; Palmer D.W.; Patel R.; Perrin M.D.; Poyneer L.A.; Rafikov R.R.; Rantakyrö F.T.; Rice E.L.; Rojo P.; Rudy A.R.; Ruffio J.-B.; Ruiz M.T.; Sadakuni N.; Saddlemyer L.; Salama M.; Savransky D.; Schneider A.C.; Sivaramakrishnan A.; Song I.; Soummer R.; Thomas S.; Vasisht G.; Wallace J.K.; Ward-Duong K.; Wiktorowicz S.J.; Wolff S.G.; Zuckerman B.
发表日期	2015
ISSN	0036-8075
起始页码	64
结束页码	67
卷号	350 期号:6256
英文摘要	Directly detecting thermal emission from young extrasolar planets allows measurement of their atmospheric compositions and luminosities, which are influenced by their formation mechanisms. Using the Gemini Planet Imager, we discovered a planet orbiting the ∼20-million-year-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 (normalized by the luminosity of the Sun) of 1.6 to 4.0 × 10-6 and an effective temperature of 600 to 750 kelvin. 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.
英文关键词	methane; absorption; astronomy; imaging method; Jupiter; methane; planet; planetary evolution; spectroscopy; absorption; air temperature; Article; astronomy; contrast; Gemini Planet Imager; luminance; molecular weight; near infrared spectroscopy; photometry; priority journal; sun; telescope; water vapor
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/244610
作者单位	Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, Stanford, CA 94305, United States; Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, CA 94040, United States; Department of Astronomy, University of California-Berkeley, Berkeley, CA 94720, United States; Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85721, United States; Center for Astrophysics and Space Sciences, University of California-San Diego, 9500 Gilman Drive, San Diego, CA 92093, United States; NASA Ames Research Center, MS 245-3, Moffett Field, CA 94035, United States; National Research Council of Canada, Herzberg Institute of Astrophysics, 5071 West Saanich Road, Victoria, BC V9E 2E7, Canada; Department of Physics and Astronomy, University of Victoria, 3800 Finnerty Road, Victoria, BC V8P 5C2, Canada; Search for Extraterrestrial Intelligence Institute, Carl Sagan Center, 189 Bernardo Avenue, Mountain View, CA 94043, United States; Space Telescope Science Institute, 3700...
推荐引用方式 GB/T 7714	Macintosh B.,Graham J.R.,Barman T.,et al. Discovery and spectroscopy of the young jovian planet 51 Eri b with the Gemini Planet Imager[J],2015,350(6256).
APA	Macintosh B..,Graham J.R..,Barman T..,De Rosa R.J..,Konopacky Q..,...&Zuckerman B..(2015).Discovery and spectroscopy of the young jovian planet 51 Eri b with the Gemini Planet Imager.Science,350(6256).
MLA	Macintosh B.,et al."Discovery and spectroscopy of the young jovian planet 51 Eri b with the Gemini Planet Imager".Science 350.6256(2015).