MN Institute for Astrophysics Journal Club

semester, 2018


Thursday, February 1st 2018
Speaker: Claudia Scarlata

Thursday, February 8th 2018
Speaker: Liliya Williams and Stou Sandalski

Thursday, February 15th 2018

Thursday, February 22nd 2018
Speaker: Avery Garon and Scott Thaller

Thursday, March 1st 2018
Journal Club is canceled to make time for people to attend the Sara Seager colloquium at at 4:00 p.m.

Thursday, March 8th 2018
Speaker: Trevor Knuth and Terry Jones

Thursday, March 15th 2018
Speaker: No Journal Club - Spring Break

Thursday, March 22nd 2018
Speaker: Sharan Banagiri and Larry Rudnick

Thursday, March 29th 2018
Speaker: Brian O'Neill

Thursday, April 5th 2018
Speaker: Nathan Eggen and Roberta Humphreys

Thursday, April 12th 2018
Speaker: Karl Young

Thursday, April 19th 2018
Speaker: Evan Tyler and John Phillips

Thursday, April 26th 2018
Speaker: Sourabh Chauhan

Thursday, May 3rd 2018
Speaker: Jamie Cheshire and Pat Kelly

Thursday, September 13th 2018
Speaker: Terry Jones, University of Minnesota

Thursday, September 20th 2018
Speaker: Trevor Knuth & Liliya Williams
Subject: To be announced

Thursday, September 27th 2018
Speaker: Aliza Beverage, University of Minnesota

Thursday, October 4th 2018
Speaker:  Jamie Cheshire, University of Minnesota

Thursday, October 11th 2018
Speaker: Andrew Helton (SOFIA)
Subject: Understanding the long-term variability of the dusty, symbiotic Mira variable star, R Aquarii

R Aquarii (R Aqr) is a nearby symbiotic system composed of a Mira
variable star and a hot white dwarf (WD). The pulsation period of R Aqr is
387 days. Of particular interest to us, however, is a peculiar suppression
of the pulsation amplitude that occurs on roughly 44 year timescales.
These events correlate with the periastron passage of the WD, the next of
which is expected to begin sometime prior to 2020. In this talk I will
present recent efforts to monitor and analyze the mid-IR properties of
this dusty system leading up to the next periastron passage of the WD,
with particular emphasis on mass loss and dust production.

At the end of the talk, I will give a brief update on activities at the
Stratospheric Observatory for Infrared Astronomy (SOFIA). I will discuss
some interesting recent science results, provide information on how to get
instant access to publicly available data sets, and talk about future
opportunities with the Observatory.


Thursday, October 18th 2018
Speaker: Evan Tyler, University of Minnesota

Thursday, October 25th 2018
Speaker: Nathan Eggen and Aliza Beverage, University of Minnesota

Thursday, November 1st 2018
Speaker: Chris Nolting, University of Minnesota

Thursday, November 15th 2018
Speaker: Jett Priewe, University of Minnesota

Thursday, November 22nd 2018
No journal club, Thanksgiving Holiday

Thursday, November 29th 2018
Speaker: Huaqing Mao, University of Minnesota

Thursday, December 6th 2018
Speaker: Sourabh Singh Chauhan, University of Minnesota

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