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The
  Webfooted Astronomer

September 2000


Extra-Solar Planetary Systems

By Mary Ingersoll
September Meeting

Dr. Guillermo Gonzalez, Ph.D Research Assistant Professor
Wednesday, September 20
7:30 p.m.

A-102 Physics-Astronomy Bldg.
University of Washington

Come early at 7 p.m. to visit with your fellow members.

Bring your slides for after the program.

DR. Guillermo Gonzalez, research assistant professor at the University of Washington, will speak at the September 20 Seattle Astronomical Society meeting. He will give us an update on extra-solar planetary systems. Dr. Gonzalez is primarily interested in studying the late stages of stellar evolution through the use of spectroscopic observations. His recent work includes spectroscopic abundance analysis of post-AGB supergiants and RV Tau variables.

He has also undertaken a study of the parent stars of the recently discovered extra-solar planetary systems. The results indicate that these stars have anomalous chemical abundances, suggesting some sort of unusual formation history.

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The Seattle Astronomical Society (SAS) meets every third Wednesday of the month. The meetings are held in room A-102 in the Physics-Astronomy building on the University of Washington campus in Seattle. The September 20 meeting will begin at 7:30 p.m. Members gather early at 7 p.m. for coffee and visiting.

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