Chemical Enrichment of the Complex Hot ISM of the Antennae Galaxies. I. Spatial and Spectral Analysis of the Diffuse X‐Ray Emission

  • Baldi A
  • Raymond J
  • Fabbiano G
  • et al.
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Abstract

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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APA

Baldi, A., Raymond, J. C., Fabbiano, G., Zezas, A., Rots, A. H., Schweizer, F., … Ponman, T. J. (2006). Chemical Enrichment of the Complex Hot ISM of the Antennae Galaxies. I. Spatial and Spectral Analysis of the Diffuse X‐Ray Emission. The Astrophysical Journal Supplement Series, 162(1), 113–133. https://doi.org/10.1086/497914

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