Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-10-07
Astronomy and Astrophysics
Astrophysics
33 pages, 18 figures, revised version accepted by Astrophysical Journal Supplement Series
Scientific paper
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.
Baldi Alessandro
Fabbiano Giuseppina
King Andrew R.
Ponman Trevor J.
Raymond John C.
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