Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996stin...9947388b&link_type=abstract
Technical Report, Raytheon STX Corp. Greenbelt, MD United States Information Technology and Scientific Services
Astronomy and Astrophysics
Astronomy
Galactic Evolution, H Alpha Line, Interacting Galaxies, X Ray Astronomy, X Ray Sources, Galactic Structure, Astronomical Models, Radio Jets (Astronomy), Galactic Radio Waves, Active Galaxies, Charge Coupled Devices, Rosat Mission, Very Large Array (Vla), X Ray Telescopes, Spaceborne Telescopes
Scientific paper
We received ROSAT data for four program objects:3C31,3C278,3C449,and NGC1044. The first three sources were observed with the ROSAT HRI instrument. Our plan was to use the HRI to image the hot gas distribution in a few pairs of strongly disturbed interacting elliptical galaxies which are also strong radio sources having a bent-jet source morphology. The PSPC was used for NGC1044 in order to obtain a flux measurement to use in planning future High Resolution Imager (HRI) observations of that source. Though we never requested such HRI observations of NGC1044, others have used those archival PSPC data from our project for other research projects and analyses. The goal of the program was to elucidate the detailed distribution of hot gas into which the jets flow. The X-ray data were consequently analyzed in conjunction with existing VLA radio maps, optical broad-band and H-alpha Charge Couple device (CCD) images, and optical kinematic data to constrain models for the propagation of ballistic jets in interacting galaxies. We were able to test and validate the claimed causal connection between tidal interaction, the presence of gas, and the onset of activity in galaxies. The full multi-wavelength multi-observatory analyses described here are still on-going and will be published in the future. Because of the relevance of this research to on-going work in the field of active galaxies, the grant was used to support travel to several scientific meetings where our x-ray analysis, numerical modeling, and related radio results were presented and discussed.
Born Kirk D.
Whitmore Brad
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