2004A&A...423..311M


C.D.S. - SIMBAD4 rel 1.7 - 2020.04.03CEST23:17:36

2004A&A...423..311M - Astronomy and Astrophysics, volume 423, 311-319 (2004/8-3)

A look with BeppoSAX at the low-luminosity galactic X-ray source 4U 2206+54.

MASETTI N., DAL FIUME D., AMATI L., DEL SORDO S., FRONTERA F., ORLANDINI M. and PALAZZI E.

Abstract (from CDS):

A pointed observation of the low-luminosity galactic source 4U 2206+54 was carried out in November 1998 with BeppoSAX. The light curve of 4U 2206+54 shows erratic variability on a timescale of ∼1h; neither hardness variations nor time periodicities are detected throughout this 67ks long observation. Thanks to the wide spectral coverage capabilities of BeppoSAX we could observe the source X-ray continuum over three energy decades, from 0.6 to 60keV. The spectrum could be equally well fitted either with a blackbody plus Comptonization or with a high energy cutoff power law. No iron emission around 6.5keV was detected, while a tentative detection of a cyclotron resonant feature in absorption is presented. Comparison of the present BeppoSAX data with the information available in the literature for this source suggests that 4U 2206+54 is a close binary system in which a (possibly magnetized) NS is accreting from the companion star wind.

Abstract Copyright:

Journal keyword(s): stars: binaries: close - X-rays: binaries - stars: neutron - stars: individual: 4U 2206+54 - accretion, accretion disks

Status at CDS:  

Simbad objects: 2

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Number of rows : 2

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 * gam Cas Be* 00 56 42.5317 +60 43 00.265 1.18 2.29 2.39 2.32 2.40 B0.5IVpe 1130 2
2 BD+53 2790 HXB 22 07 56.2368407539 +54 31 06.405811141 9.4 10.11 9.84 9.64 9.43 O9.5Vep 171 0

    Equat.    Gal    SGal    Ecl

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2020.04.03-23:17:36

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