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Date and Time of the Query: 2019-08-18 T02:27:16 PDT
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For refcode 2001ApJ...547..693M:
Retrieve 52 NED objects in this reference.
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Copyright by American Astronomical Society. Reproduced by permission
2001ApJ...547..693M Origin of the Scatter in the X-Ray Luminosity of Early-Type Galaxies Observed with ROSAT Kyoko Matsushita Received 2000 February 1; accepted 2000 September 26 ABSTRACT Statistical properties of X-ray luminosity and temperature are studied for 52 early-type galaxies based on the ROSAT PSPC data. All of the X-ray luminous galaxies show largely extended emission with a radius of a few times 10r_e_, while X-ray faint galaxies do not show such a component. This leads to a division of early-type galaxies into two categories: X-ray extended and X-ray compact galaxies. Except for a few galaxies in dense cluster environments, the luminosity and temperature of X-ray compact galaxies are well explained by a kinematical heating of the gas supplied by stellar mass loss. In contrast, X-ray extended galaxies indicate large scatter in the X-ray luminosity. We discuss the notion that X-ray extended galaxies are the central objects of large potential structures and that the presence or absence of this potential is the main origin of the large scatter in the X-ray luminosity. Subject headings: galaxies: elliptical and lenticular, cD-galaxies: ISM-X- rays: galaxies-X-rays: ISM
Retrieve 52 NED objects in this reference.
Please click here for ADS abstract

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