Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006apjs..162..113b&link_type=abstract
The Astrophysical Journal Supplement Series, Volume 162, Issue 1, pp. 113-133.
Astronomy and Astrophysics
Astronomy
9
Galaxies: Individual (Ngc 4038/39), Galaxies: Interactions, Galaxies: Peculiar, X-Rays: Galaxies, X-Rays: Ism
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 4038/4039), performed using the deep, co-added ~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 2×1021 cm-2). Metal abundances for Ne, Mg, Si, and Fe vary dramatically throughout the ISM from subsolar 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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