Chemical enrichment of the complex hot ISM of the Antennae galaxies: I. Spatial and spectral analysis of the diffuse X-ray emission

(2) Carnegie Observatories; (3) Theoretical Astrophysics Group - University of Leicester; (4) School of Physics & Astronomy - University of Birmingham); A. Baldi (1); A.H. Rots (1); A.R. King (3); A. Zezas (1); F. Schweizer (2); G. Fabbiano (1); J.C. Raymond (1)

arxiv: astro-ph/0410192 · v2 · pith:SHTWWUGBnew · submitted 2004-10-07 · 🌌 astro-ph

Chemical enrichment of the complex hot ISM of the Antennae galaxies: I. Spatial and spectral analysis of the diffuse X-ray emission

A. Baldi (1) , J.C. Raymond (1) , G. Fabbiano (1) , A. Zezas (1) , A.H. Rots (1) , F. Schweizer (2) , A.R. King (3) , T.J. Ponman (4) ((1) Harvard-Smithsonian Center for Astrophysics

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(2) Carnegie Observatories (3) Theoretical Astrophysics Group - University of Leicester (4) School of Physics & Astronomy - University of Birmingham)

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keywords analysisspectralantennaechandradeepgalaxiespropertiesresolution

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We present an analysis of the properties of the hot interstellar medium (ISM) in the merging pair of galaxies known as The Antennae (NGC 4038/39), performed using the deep, coadded ~411 ks Chandra ACIS-S data set. These deep X-ray observations and Chandra's high angular resolution allow us to investigate the properties of the hot ISM with unprecedented spatial and spectral resolution. Through a spatially resolved spectral analysis, we find a variety of temperatures (from 0.2 to 0.7 keV) and Nh (from Galactic to 2x10^21 cm^-2). Metal abundances for Ne, Mg, Si, and Fe vary dramatically throughout the ISM from sub-solar values (~0.2) up to several times solar.

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Chemical enrichment of the complex hot ISM of the Antennae galaxies: I. Spatial and spectral analysis of the diffuse X-ray emission

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