Star Formation and Stellar Outflows in NGC 1333

NGC 1333 is likely the largest nearby star formation region (d~300 pc). As common in active star formation areas, contained within it are a number of Herbig Haro (HH) objects, tracing the stellar outflows of young stellar objects. HH 7-11 is a particularly striking and famous example, and is the subject of the study. I used Spitzer and Hubble Space Telescope observations to study these objects in detail, and using the MAPPINGS shock simulation program I determined their outflow characteristics. Using this information, we estimated the total energy and momentum feedback from the outflows within the region in an attempt to determine the eventual fate of the natal cloud.

Terrestrial Crater Formation

The Vredefort crater is Earth's largest verified impact crater. Though it is quite old (2.023 billion years old) and thus has gone through extensive erosion, it was believed to originally have a diameter of 250-300 km. I used iSALE, a shock physics impact code, to simulate the impactor that created the crater. Our finding of --  (waiting for publication!) was in disagreement with past simulation results, but is a better fit to the characteristics found in the crater.

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