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Delivery of Volatiles & Organics: From Earth to Exoearths in the Era of JWST Webcasts

Wednesday Sep 15, 2010
Delivery of Volatiles & Organics: From Earth to Exoearths in the Era of JWST
Ruud Visser (Leiden Observatory)
In order to probe possible pathways for delivering volatiles to the Earth and other rocky planets or exoplanets, it is necessary to understand when and where these volatiles were formed in the first place. We present a model that follows the chemical ...
Delivery of Volatiles & Organics: From Earth to Exoearths in the Era of JWST
Thayne Currie (NASA/GSFC)
We describe Spitzer IRS spectroscopic observations of the ~ 10 Myr-old star, EF Cha. Analysis of the EF Cha spectra from 5 microns to 35 microns confirms that it is surrounded by a luminous, terrestrial zone debris disk. Comparing its IR spectrum to ...
Delivery of Volatiles & Organics: From Earth to Exoearths in the Era of JWST
Drake Deming (NASA/GSFC)
Nearby lower main sequence stars host a class of planets known as Super-Earths, that have no analog in our own solar system. Super-Earths are rocky and/or icy planets with masses up to about 10 Earth masses. They are expected to host atmospheres gene ...
Delivery of Volatiles & Organics: From Earth to Exoearths in the Era of JWST
Leslie Rogers (MIT)
GJ 1214b, one of the first discovered transiting super Earths, must have a significant gas component to account for its low average density (M_p=6.55 M_earth, R_p=2.678 R_earth). We use interior structure models to constrain GJ 1214b’s gas envelope m ...
Delivery of Volatiles & Organics: From Earth to Exoearths in the Era of JWST
Siyi Xu (UCLA)
We describe a simple model that shows that extrasolar minor planets can retain much of their internal water during their host star’s red giant stage. These water-rich bodies might be accreted onto helium white dwarfs (DB) and produce an observable am ...
Delivery of Volatiles & Organics: From Earth to Exoearths in the Era of JWST
Mark Clampin (NASA (GSFC))
No description found.
Delivery of Volatiles & Organics: From Earth to Exoearths in the Era of JWST
Shogo Tachibana (University of Tokyo)
The Hayabusa spacecraft returned to the Earth on June 13, 2010, and its sample capsule was safely recovered. It is expected that the capsule contains particles from the asteroid Itokawa although the sampling did not go as originally planned. X-ray fl ...
Delivery of Volatiles & Organics: From Earth to Exoearths in the Era of JWST
Dante Lauretta (Space Telescope Science Institute)
No description found.
Delivery of Volatiles & Organics: From Earth to Exoearths in the Era of JWST
Hal Weaver (Johns Hopkins University)
The Primitive Material Explorer (PriME) is a proposed NASA Discovery mission that will launch in 2016 and rendezvous with comet 46P/Wirtanen in 2021. During an intensive yearlong science phase starting in August 2023 and ending two months after perih ...
Delivery of Volatiles & Organics: From Earth to Exoearths in the Era of JWST
Steve Mojzsis (University of Colorado)
No description found.
Tuesday Sep 14, 2010
Delivery of Volatiles & Organics: From Earth to Exoearths in the Era of JWST
Paule Sonnentrucker (Space Telescope Science Institute)
Interstellar grains in molecular clouds are coated with icy mantles once the visual extinction exceeds about 3 magnitudes within the cloud. The existence of these mantles is revealed by the presence of various molecular absorption bands that are dete ...
Delivery of Volatiles & Organics: From Earth to Exoearths in the Era of JWST
David Neufeld (John Hopkins University)
When stars leave the main sequence, having exhausted their supply of hydrogen at the core, their luminosities increase dramatically and the snow line moves outward. Any comets - or dwarf planets - within a Kuiper belt analog will be vaporized, releas ...
Delivery of Volatiles & Organics: From Earth to Exoearths in the Era of JWST
Geoffrey Blake (STScI)
With the advent of high dynamic range infrared observations from space (Spitzer IRS) and the ground (principally with Keck-NIRSPEC and VLT-CRIRES), widespread molecular emission from the inner regions of circumstellar disks has recently been observed ...
Delivery of Volatiles & Organics: From Earth to Exoearths in the Era of JWST
John Carr (Naval Research Laboratory)
One of the interesting results of the Spitzer mission is the observation that classical T Tauri stars (CTTS) show a rich molecular emission spectrum in the mid-infrared. The spectrum is typically dominated by rotational transitions of H2O, along with ...
Delivery of Volatiles & Organics: From Earth to Exoearths in the Era of JWST
Edward Bergin (University of Michigan)
I will outline our current knowledge of the water vapor and ice distribution in protoplanetary disks. In the past few years through both ground and space based efforts we have been able to place important observational constraints on the presence or ...
Delivery of Volatiles & Organics: From Earth to Exoearths in the Era of JWST
Thomas Bethell (University of Michigan)
The radiative environment inside protoplanetary disks is extremely important for the generation and destruction of a wide range of molecular species; from the simple H_2 molecule to complex organics. High energy stellar photons (UV and X-rays) not on ...
Delivery of Volatiles & Organics: From Earth to Exoearths in the Era of JWST
Ilaria Pascucci (Space Telescope Science Institute)
I will present a comparative Spitzer/IRS study of the gas properties of disks around young Sun-like stars and very low-mass stars/brown dwarfs. I will show that there is a striking difference in the two samples in the presence of simple, gas-phase or ...
Delivery of Volatiles & Organics: From Earth to Exoearths in the Era of JWST
Fred Ciesla (University of Chicago)
Protoplanetary disks are not static objects--rather the gas and solids they contain are constantly in motion, being jostled by gravitational torques and magnetic fields. The net motions are inward, with most of the mass accreting onto the central sta ...
Delivery of Volatiles & Organics: From Earth to Exoearths in the Era of JWST
Daniel Apai (Space Telescope Science Institute)
Although one of the most abundant elements in the Universe nitrogen is very rare on Earth (ppm levels). In spite of its low concentration in terrestrial environments, nitrogen plays a fundamental role in all ammino acids and proteins and, correspondi ...
Delivery of Volatiles & Organics: From Earth to Exoearths in the Era of JWST
Conference Audience (n/a)
No description found.
Monday Sep 13, 2010
Delivery of Volatiles & Organics: From Earth to Exoearths in the Era of JWST
Steve Mojzsis (University of Colorado)
No description found.
Delivery of Volatiles & Organics: From Earth to Exoearths in the Era of JWST
Keith Noll (Space Telescope Science Institute)
Kuiper Belt objects are the surviving remnants of the Sun's protoplanetary disk. The large range of colors in these objects can be shown to be primordial for objects larger than D~100 km. Dynamical segregation of objects with differing surface compos ...
Delivery of Volatiles & Organics: From Earth to Exoearths in the Era of JWST
Dante Lauretta (University of Arizona )
I will provide an overview of the CI, CM, and CR carbonaceous chondrite meteorite groups. In addition, I will review recent work linking the CI chondrites with samples returned from comet Wild 2 by the Stardust mission, the alteration of metal in the ...
Delivery of Volatiles & Organics: From Earth to Exoearths in the Era of JWST
Michael Mumma (GSFC)
Viewed from a cosmic perspective, Earth is a dry planet yet its oceans are enriched in deuterium by a large factor relative to nebular hydrogen. The question of exogenous delivery of organics and water to Earth and other young planets is of critical ...
Delivery of Volatiles & Organics: From Earth to Exoearths in the Era of JWST
Hal Levision (SwRI)
The formation and early dynamical evolution of the Solar System was a violent process that led to the wholesale redistribution of its small bodies. Many of these objects collided with the Earth. Indeed, the Earth currently contains material from ever ...
Delivery of Volatiles & Organics: From Earth to Exoearths in the Era of JWST
Conference Audience (n/a)
No description found.