About Us

About Us
is made up of undergraduate students from Columbia and Barnard with a genuine interest in astronomy and who want to engage with other astronomy students, the department here at Columbia and the community at large. We welcome undergrads that are majoring in Astronomy/Astrophysics, other science disciplines, or people who simply have an interest in the subject.

Nov 17, 2010

Josh Peek on Stardust: Beautiful and Complex

Our very own Josh Peek was our colloquia speaker for today:

Josh Peek's Website

The Galactic Arecibo L-Band Feed Array HI (GALFA-HI) Survey is an ongoing survey of neutral hydrogen in the Galaxy. The development of the bulk of the data reduction procedures and software for GALFA-HI and the analysis of certain high-velocity clouds within the survey was the centerpiece of the my thesis.
The survey is conducted via a 'jigsaw puzzle' approach, in which all data are taken with the same spectrometer setup, but individual researchers are allowed to observe specific regions of interest. Using this approach, and also observing commensally with ALFALFAAGES and GALFACTS, we have observed approximately 50% of the 13,000 square degrees available to the Arecibo 305m telescope at 3.5' resolution with a spectral resolution of 0.18 km/s.

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