NOAO >   Observing Info >   Approved Programs >   2006A-0253

Small NOAO Logo

Proposal Information for 2006A-0253


PI: Ian N. Evans, Smithsonian Astrophysical Observatory, ievans@cfa.harvard.edu
Address: MS-81, 60 Garden Street, Cambridge, MA 02138, USA

CoI: Anuradha Koratkar, GEST at UMBC
CoI: Susan Neff, Goddard Space Flight Center

Title: Jet/ISM Interactions: A case study of Centaurus A

Abstract: We wish to understand the nature of the jet-ISM interaction in the peculiar elliptical galaxy Cen A (NGC5128), the nearest active galaxy. The jet-ISM interaction in Cen A occurs over a distance of at least 35kpc, and involves the jet interacting with both cold, dense clouds as well as with warmer, less dense environments. Recent GALEX, Chandra and VLA data show that the ionizing effects of the jet in Cen A extend well beyond the known star-forming regions along the jet trajectory. They also appear to extend radially outward from the jet axis in some regions. It is not clear what processes transfer energy from the jet to the ISM or how they do so, although it seems likely that shocks are involved. We wish to understand the relationship between the radio jet, shocked gas, star formation, and possibly photo-ionized gas in this nearby prototype system. Deep imaging observations are required. Hence, we are proposing to use the MOSAIC II camera on the CTIO-4m to image the [OII], [OIII], and H(alpha) associated with the radio jet along its > 35kpc length.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2006A-0253

noaoprop-help@noao.edu

Small NOAO Logo