11/3: VPL Astrobiology Colloquium presents Steven Desch

Event Details

11/3: VPL Astrobiology Colloquium presents Steven Desch

Time: November 3, 2015 from 3pm to 7pm
Location: Adobe Connect
Website or Map: http://connect.arc.nasa.gov/u…
Event Type: online, seminar
Organized By: Mike Toillion
Latest Activity: Nov 3, 2015

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Event Description

Astronomical, Planetary, and Meteoritic Evidence Our Solar System Formed Under Intense UV Irradiation

Presenter: Steven Desch, Arizona State University
When: November 3, 2015 3PM PST

Evidence is mounting that our Solar System formed in a high-mass star-forming region with massive stars and was exposed to their intense far ultraviolet (FUV) radiation. I will present astronomical observations that indicate this is a common mode of star formation. I will discuss how the architecture of our solar system points to the Sun’s protoplanetary disk being sculpted by photoevaporation by FUV irradiation, and I will discuss meteoritic evidence from oxygen isotopes that also points to FUV irradiation. I will then discuss the effects that FUV irradiation had on volatile transport through our disk. I will present a model in which the noble gas abundances of Jupiter’s atmosphere also appear to require intense FUV photoevaporation, and I will discuss further possible effects on water 'snow lines’ in the solar nebula.


To join using a videoconferencing system:

Please RSVP to Mike Toillion (mike.toillion@nasa.gov) if you will be joining by Polycom.

To view the slides, connect to http://connect.arc.nasa.gov/uwseminar/


To join using a web browser:

The slides and audio/video for this meeting will be presented using Adobe Connect. To join the meeting, connect to:

http://connect.arc.nasa.gov/uwseminar/

If you are having problems connecting, you can try joining http://connect.arc.nasa.gov/uwseminar/?launcher=false, or rebooting your computer, or try joining from another network.

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