NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-25 T06:21:04 PDT
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For refcode 2003A&A...408...95M:
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NED Abstract

Copyright by European Southern Observatory (ESO). Reproduced by permission
2003A&A...408...95M A limit on nuclear activity in Leo A E. J. A. Meurs Received 29 March 2002 / Accepted 20 May 2003 ROSAT HRI observations of Leo A are analysed in order to complement a recent X-ray survey of the centres of Local Group galaxies (Zang & Meurs 2001). It is likely that high-energy cores in galaxies are indicative of some level of nuclear activity. The upper limit 0.1-2.4 keV luminosity determined for Leo A (log L_X_ < 35.77) is consistent with the results that were obtained for other small Local Group systems. Leo A represents the lowest optical luminosity Irregular galaxy in the Local Group that has been studied at X-rays. Also the ROSAT All Sky Survey data allow to derive a (less constraining) upper limit flux for this galaxy. Keywords: galaxies: nuclei, galaxies: individual: Leo A, galaxies: Local Group, X-rays: galaxies, X-rays: individuals: Leo A
Retrieve 15 NED objects in this reference.
Please click here for ADS abstract

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