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

A Baldi; JC Raymond; G Fabbiano; A Zezas; AH Rots; F Schweizer; AR King; Trevor Ponman

doi:10.1086/497914

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

A Baldi, JC Raymond, G Fabbiano, A Zezas, AH Rots, F Schweizer, AR King, Trevor Ponman

Physics and Astronomy

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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 4038/4039), performed using the deep, co-added similar to 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 subsolar values (similar to 0.2) up to several times solar.

Original language	English
Pages (from-to)	113-133
Number of pages	21
Journal	Astrophysical Journal. Supplement Series
Volume	162
DOIs	https://doi.org/10.1086/497914
Publication status	Published - 1 Jan 2006

Keywords

galaxies : peculiar
X-rays : ISM
X-rays : galaxies
galaxies : interactions
galaxies : individual (NGC 4038/39)

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10.1086/497914

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

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 4038/4039), performed using the deep, co-added similar to 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 subsolar values (similar to 0.2) up to several times solar.",

keywords = "galaxies : peculiar, X-rays : ISM, X-rays : galaxies, galaxies : interactions, galaxies : individual (NGC 4038/39)",

author = "A Baldi and JC Raymond and G Fabbiano and A Zezas and AH Rots and F Schweizer and AR King and Trevor Ponman",

year = "2006",

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doi = "10.1086/497914",

language = "English",

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pages = "113--133",

journal = "Astrophysical Journal. Supplement Series",

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TY - JOUR

T1 - Chemical enrichment of the complex hot ISM of the Antennae galaxies: I- Spatial and spectral analysis of the diffuse X-ray emission

AU - Baldi, A

AU - Raymond, JC

AU - Fabbiano, G

AU - Zezas, A

AU - Rots, AH

AU - Schweizer, F

AU - King, AR

AU - Ponman, Trevor

PY - 2006/1/1

Y1 - 2006/1/1

N2 - 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 similar to 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 subsolar values (similar to 0.2) up to several times solar.

AB - 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 similar to 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 subsolar values (similar to 0.2) up to several times solar.

KW - galaxies : peculiar

KW - X-rays : ISM

KW - X-rays : galaxies

KW - galaxies : interactions

KW - galaxies : individual (NGC 4038/39)

UR - http://www.scopus.com/inward/record.url?scp=33644523382&partnerID=8YFLogxK

U2 - 10.1086/497914

DO - 10.1086/497914

M3 - Article

SN - 1538-4365

VL - 162

SP - 113

EP - 133

JO - Astrophysical Journal. Supplement Series

JF - Astrophysical Journal. Supplement Series

ER -

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

Abstract

Keywords

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