2003/06/18 by A. Zezas, M. J. Ward, S. S. Murray · 73 citations
Physics and Astronomy · #Active galactic nucleus #Astrophysical Phenomena and Observations #Astrophysics and Cosmic Phenomena #Component (thermodynamics) #Emission spectrum #Galactic nuclei #Galaxies: Formation, Evolution, Phenomena #Galaxy #Galaxy merger #Luminosity #Spectral line #astro-ph
paper · pdf · doi:10.1086/378144
published in The Astrophysical Journal 594(1), L31-L34 (IOP Publishing) · 7 pages, 2 figures, to appear in ApJ Lett
arxiv created 2003/06/18 · openalex publication_date 2003/08/06 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
We report the results of a Chandra observation of the X-ray-luminous star-forming galaxy Arp 299 (NGC 3690/IC 694). We detect 18 discrete X-ray sources with luminosities above ~10 39 ergs s -1 (0.5-8.0 keV band), which contribute ~40% of the total galactic emission in this band. The remaining emission is associated with a diffuse component spatially coincident with regions of widespread star formation. We detect X-ray emission from both nuclei. One of the discrete sources within the complex nuclear region of NGC 3690 is found to have a very hard spectrum, and therefore we associate it with the origin of the active galactic nucleus-like spectrum that has also been detected at high X-ray energies using BeppoSAX .