Chandra X-ray Observations of the Spiral Galaxy M81

A Chandra X-Ray Observatory ACIS-S imaging observation is used to study the population of X-ray sources in the nearby Sab galaxy M81 (NGC 3031). A total of 177 sources are detected with 124 located within the D25 isophote to a limiting X-ray luminosity of 3e36 ergs/cm2/s. Source positions, count rat...

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Veröffentlicht in:	arXiv.org 2002-06
Hauptverfasser:	Swartz, Douglas A, Ghosh, Kajal K, McCollough, Michael L, Pannuti, Thomas G, Tennant, Allyn F, Wu, Kinwah
Format:	Artikel
Sprache:	eng
Schlagworte:	Active galactic nuclei Constraining Galaxies Luminosity Space telescopes Spiral galaxies X ray imagery X ray sources X ray telescopes X-ray astronomy
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	A Chandra X-Ray Observatory ACIS-S imaging observation is used to study the population of X-ray sources in the nearby Sab galaxy M81 (NGC 3031). A total of 177 sources are detected with 124 located within the D25 isophote to a limiting X-ray luminosity of 3e36 ergs/cm2/s. Source positions, count rates, luminosities in the 0.3-8.0 keV band, limiting optical magnitudes, and potential counterpart identifications are tabulated. Spectral and timing analysis of the 36 brightest sources are reported including the low-luminosity active galactic nucleus, SN 1993J, and the Einstein-discovered ultra-luminous X-ray source X6.
ISSN:	2331-8422
DOI:	10.48550/arxiv.0206160