2008
DOI: 10.1086/587481
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The Hot Interstellar Medium of Normal Elliptical Galaxies. II. Morphological Evidence for Active Galactic Nucleus Feedback

Abstract: We report on the discovery of a new quantitative relationship between X-ray gas morphology and radio and X-ray AGN luminosities in normal elliptical galaxies. This is the second paper in a series using data on 54 objects from the Chandra public archive and builds on the findings of Paper I, which demonstrated that hydrostatic equilibrium in elliptical galaxies holds, at best, only approximately and that the shape of the X-ray isophotes is unrelated to the shape of the gravitational potential. Instead, the gas … Show more

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Cited by 43 publications
(33 citation statements)
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“…Bubble merging, if it occurs, could explain the higher power inferred from this sample, but does not explain why no bubbling is detected at all in some objects, although some of the selection effects mentioned below may be relevant. Diehl & Statler (2008), in a study of Chandra X-ray data of 54 elliptical galaxies, report that the gas is almost always assymmetrically disturbed and that this correlates with X-ray and radio measures of AGN activity.…”
Section: Hot Gas In Groups and Elliptical Galaxiesmentioning
confidence: 98%
“…Bubble merging, if it occurs, could explain the higher power inferred from this sample, but does not explain why no bubbling is detected at all in some objects, although some of the selection effects mentioned below may be relevant. Diehl & Statler (2008), in a study of Chandra X-ray data of 54 elliptical galaxies, report that the gas is almost always assymmetrically disturbed and that this correlates with X-ray and radio measures of AGN activity.…”
Section: Hot Gas In Groups and Elliptical Galaxiesmentioning
confidence: 98%
“…Empirically, large scatter (factor of ∼100) is found between L X and L K (e.g., Forman et al 1985;Fabbiano 1989), and there are hints that the slope and scatter depend on environment (Mulchaey & Jeltema 2010). Likely at play are both intrinsic scatter in the relation between stellar and dark halo mass, and non-equilibrium conditions in the hot gas, e.g., due to AGN feedback (Diehl & Statler 2008;Dunn et al 2010 Figure 14. Red-blue-green composite images of SDSS photometry for 78 MASSIVE galaxies.…”
Section: X-ray Gas and Halo Massmentioning
confidence: 99%
“…radio emission) are also those with a sizable plasma component. A more systematic comparison of the radio and gas properties in isolated galaxies should be made, to better assess the role of AGN feedback, also in light of the observed correlation between the asymmetries in the gas morphology and AGN activity in a sample of well studied objects (Diehl & Statler 2008), which are however in a variety of environments.…”
Section: Comparison With Theoretical Expectationsmentioning
confidence: 99%