SIMBAD references

2003A&A...398..967G - Astronomy and Astrophysics, volume 398967-973 (2003/2-2)

XMM-Newton observations of the Seyfert 1 galaxy ESO 141-G55.

GONDOIN P., ORR A. and LUMB D.

Abstract (from CDS):

We report on an observation of the Seyfert 1 galaxy ESO 141-G55 performed in October 2001 with the EPIC MOS cameras and Reflection Grating Spectrometers (RGS) on board the XMM-Newton observatory. We find the hard (3-10keV) continuum slope, including reflection, to be somewhat flatter (Γ=1.72±0.06) than that of a typical broad-line Seyfert 1 galaxy. The spectrum shows a weak emission line at 6.45±0.04keV with a measured equivalent width of ≃40eV. A broad spectral feature is observed around 7keV that can be fitted by an absorption edge at 7.6±0.1keV. The extrapolation of the primary power law continuum to energies lower than 2keV indicates the presence of a soft excess component contributing to 45±3% of the overall flux in the 0.3-2.0keV energy range. This soft-excess cannot be explained solely by enhanced reflection from a highly ionized disk.

Abstract Copyright: ∼

Journal keyword(s): galaxies: individual: ESO 141-G55 - galaxies: nuclei - galaxies: Seyfert

Simbad objects: 1

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