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Astron. Astrophys. 342, L41-L44 (1999)

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2. Observation and data reduction

The BeppoSAX X-ray observatory (Boella et al. 1997a) is a major programme of the Italian Space Agency with participation of the Netherlands Agency for Aereospace Programs. This work concerns results obtained with three of the Narrow Field Instruments (NFI) onboard: the Low Energy Concentrator Spectrometer (LECS; Parmar et al. 1997), the Medium Energy Concentrator Spectrometers (MECS; Boella et al. 1997b), and the Phoswich Detector System (PDS; Frontera et al. 1997). LECS and MECS operate in the 0.1-4.5 keV and 1.5-10 keV spectral bands respectively, while PDS covers the 13-300 keV band.

BeppoSAX NFI pointed at NGC 2110 from Oct 12th, to Oct 14th, 1997. The effective exposure times were [FORMULA] s for the LECS, [FORMULA] s for the MECS, and [FORMULA] s for the PDS. Spectral data were extracted from region centred in NGC 2110 with a radius of 2´ and 4´ for the MECS and the LECS respectively. LECS and MECS background subtraction was performed by means of blank sky spectra extracted from the same region of detector's field of view. The net source count rate was [FORMULA] c/s in the LECS (0.5-4.5 keV), and 0.23 c/s in the two MECS (2-10 keV). The detected count rates correspond, for the best-fit model (see Sect. 3.3), to [FORMULA], [FORMULA], and [FORMULA] (in units of erg cm-2 s-1).

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© European Southern Observatory (ESO) 1999

Online publication: February 23, 1999