Chemical enrichment of the complex hot ISM of the Antennae Galaxies: I. Spatial and spectral analysis of the diffuse X-ray emission
نویسنده
چکیده
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 2× 10 21 cm). Metal abundances for Ne, Mg, Si, and Fe vary dramatically throughout the ISM from sub-solar values (∼0.2) up to several times solar. Subject headings: galaxies: peculiar — galaxies: individual(NGC4038/39) — galaxies: interactions — X-rays: galaxies — X-rays: ISM
منابع مشابه
X-raying Chemical Evolution and Galaxy Formation in the Antennae
We present the integrated 411 ks Chandra ACIS-S exposure of the Antennae galaxies (NGC 4038/39). Besides a rich population of point-like sources, this spectacular image reveals a spatially and spectrally complex hot diffuse gaseous component. For the first time we detect intense line emission from Fe, Ne, Mg and Si in The Antennae, and obtain a detailed picture of spatially varied metal abundan...
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We present an analysis of the properties of the 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 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 ...
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