Wine and Cheese Fall 2015: Difference between revisions
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<h2>[[CAS_Wine_and_Cheese_Seminars|Back to W&C Schedule]] </h2> | <h2>[[CAS_Wine_and_Cheese_Seminars|Back to W&C Schedule]] </h2> | ||
= | = September 14th = | ||
== | == Shadab Alam == | ||
'''Ttitle''' <br> | '''Ttitle''' <br> | ||
Abstract | |||
== Laurent Pueyo == | |||
'''[http://www.sciencemag.org/content/early/2015/08/12/science.aac5891 Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager]''' | |||
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 ~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/L⦿=1.6-4.0 × 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. | |||
= September 21st = | |||
== Tim Brandt == | |||
'''Disrupted Globular Clusters Can Explain the Galactic Center Gamma Ray Excess''' | |||
Abstract | |||
== Simeon Bird == | |||
'''Ttitle''' | |||
Abstract | Abstract | ||
Revision as of 18:40, 13 August 2015
This page records the schedule, titles and abstracts of the JHU/STScI CAS Astrophysics Wine & Cheese Series in Fall 2015.
Back to W&C Schedule
September 14th
Shadab Alam
Ttitle
Abstract
Laurent Pueyo
Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager
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 ~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/L⦿=1.6-4.0 × 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.
September 21st
Tim Brandt
Disrupted Globular Clusters Can Explain the Galactic Center Gamma Ray Excess
Abstract
Simeon Bird
Ttitle
Abstract
