The Chandra 3C Snapshot Survey for Sources with z<0.3

Astronomy and Astrophysics – Astronomy

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Scientific paper

We report on our Chandra Cycle 9 program to observe half of the 60 as yet unobserved 3C radio sources at z<0.3 for 8 ksec each. We will propose for the remainder in cycle 10. Here we report on the preliminary analyses of about half of these first 30 AO-9 sources which have recently been observed. We show the first results about the emission of their active nuclei, with spectral fits to determine the excess (above galactic value) of the column density to the source. In particular, in our sample, there are several High Excitation Galaxies (HEGs) that show evidence of nuclear emission only above 2 keV, as expected. We also compare these observation with VLA radio maps and HST data to search for possible extended emission in their hotsposts. The analysis of 3C 171 shows a detection of X-ray emission from the eastern radio hotspot. Finally, a comparison within X-rays flux maps in different energy range is presented. This allow us to study the absorption of nuclear regions and, when possible, to investigate the emission of their extended regions.
The work at SAO is supported by NASA grant GO8-9114A.

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