Jeff Cooke

ARC Future Fellow - Centre for Astrophysics & Supercomputing
Swinburne University of Technology, PO Box 218, Mail number H30, Hawthorn, VIC 3122 Australia
office: +61 3 9214 5392 -- fax: +61 3 9214 8797 -- email: jcooke@astro.swin.edu.au

 

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Tracing the baryon cycle at low redshift

I am investigating outflows and infall of gas in circumgalactic environments as traced by MgII absorption-line systems. We have a program that first selects galaxies in a volume-limited survey and then searches for absorbers in QSO sightlines (Barton & Cooke 2009). This "reverse approach" minimizes many biases inherent to traditional surveys and helps to better understand absorber characteristics as they relate to galaxy properties, such as color and environment. These data are used to determine MgII kinematics (Kacprzak et al 2009, 2010 in prep.) and if the presence and/or replenishment of these systems results from galactic-scale outflows driven by stellar and supernovae winds or inflows of intergalactic material.

Click here to access the ADS link displaying a list of articles describing this work and other research of mine.

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The Hubble Space Telescope

The Milky Way can be seen, as well as two of our closest companion galaxies, the Large and Small Magellenic Clouds, in this long-exposure image of the 4 meter telescope at the CTIO located in the Southern Hemisphere (Chile).