Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager [electronic resource].
- Washington, D.C. : United States. Dept. of Energy, 2015.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
- Physical Description:
- pages 64-67 : digital, PDF file
- Additional Creators:
- Los Alamos National Laboratory
United States. Department of Energy
United States. Department of Energy. Office of Scientific and Technical Information
- 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<sup>–6</sup> 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. As a result, this planet also has a sufficiently low luminosity to be consistent with the “cold-start” core-accretion process that may have formed Jupiter.
- Published through SciTech Connect.
Science 350 6256 ISSN 0036-8075 AM
B. Macintosh; J. R. Graham; T. Barman; R. J. De Rosa; Q. Konopacky; M. S. Marley; C. Marois; E. L. Nielsen; L. Pueyo; A. Rajan; J. Rameau; D. Saumon; J. J. Wang; J. Patience; M. Ammons; P. Arriaga; E. Artigau; S. Beckwith; J. Brewster; S. Bruzzone; J. Bulger; B. Burningham; A. S. Burrows; C. Chen; E. Chiang; et al.
- Funding Information:
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