Velocity Dispersion and Kinetic Energy in CGCG048A And CGCG048B

Type Conference Paper
Names Olivia Lanes, E. M. Wilcots, D. Nielsen
Proceedings Title American Astronomical Society
Conference Name AAS Meeting #223, #252.07
Volume 223
Date January 1, 2014
Library Catalog
Abstract We observed galaxies CGCG048A and CGCG048B, two objects classified as part of bent-double radio source, using spectroscopic data obtained using the Sparsepak IFU on the WIYN 3.5m telescope in Arizona. Our goal was to extract stellar and gaseous velocity dispersions from the H and [O III] emission lines, and use this information to derive the feedback energy and mass distribution of these unusual galaxies. We derived an average velocity dispersion of 100 km/s for CGCG048A and 62 km/s for CGCG048B. From this, we were able to calculate the total kinetic energy of both galaxies and found it to be on the order of 10^53 ergs. This led us to estimate the number of supernovae that could have occurred in these galaxies, and therefore conclude that these galaxies are most likely starburst, a conclusion supported by our analysis of their radio continuum emission. Our examination of the optical images suggest that these galaxies are interacting.
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