Accretion and Outflow in the Active Galactic Nucleus and Starburst of NGC 5135

Observations of the Seyfert 2 and starburst galaxy NGC 5135 with the ChandraX-ray Observatory demonstrate that both of these phenomena contributesignificantly to its X-ray emission. We spatially isolate the active galacticnucleus (AGN) and demonstrate that it is entirely obscured by column densityN_H > 10^{24} cm^{-2}, detectable in the Chandra bandpass only as a stronglyreprocessed, weak continuum and a prominent iron K alpha emission line withequivalent width of 2.4 keV. Most of the soft X-ray emission, both near the AGNand extending over several-kpc spatial scales, is collisionally-excited plasma.We attribute this thermal emission to stellar processes. The AGN dominates theX-ray emission only at energies above 4 keV. In the spectral energydistribution that extends to far-infrared wavelengths, nearly all of theemergent luminosity below 10 keV is attributable to star formation, not theAGN.Comment: To appear in ApJ; 13 pages, 12 figure