Abstract We present results from ROSAT observations of NGC 1808 and NGC 2903. Exposures of 10 ksec each with the PSPC detector show X-ray sources at the central positions of both galaxies which are classified as nuclear starburst galaxies. Both targets, NGC 1808 and NGC 2903 appear slightly extended in X-ray maps in the energy band 0.1–2.4 keV. The X-ray spectrum of NGC 1808 shows almost complete absorption below 0.5 keV, indicating an extremely high hydrogen column density towards that source (N H ≈ 8 × 1021cm−2 resulting from model fits on the PSPC spectrum). In case of NGC 2903, the number of counts in the ROSAT band is significantly lower than expected from a previous EINSTEIN investigation of the source.


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    Titel :

    ROSAT PSPC observations of two starburst galaxies


    Beteiligte:
    Junkes, N. (Autor:in) / Pietsch, W. (Autor:in) / Hensler, G. (Autor:in)

    Erschienen in:

    Advances in Space Research ; 13 , 12 ; 323-326


    Erscheinungsdatum :

    1993-01-01


    Format / Umfang :

    4 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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