2005A&A...441..283T


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.05CEST06:22:27

2005A&A...441..283T - Astronomy and Astrophysics, volume 441, 283 (2005/10-1)

Discovery of a redshifted X-ray emission line in the symbiotic neutron star binary 4U 1700+24.

TIENGO A., GALLOWAY D.K., DI SALVO T., MENDEZ M., MILLER J.M., SOKOLOSKI J.L. and VAN DER KLIS M.

Abstract (from CDS):

We present the spectral analysis of an XMM-Newton observation of the X-ray binary 4U 1700+24, performed during an outburst in August 2002. The EPIC-PN spectrum above 1keV can be modeled by a blackbody plus Comptonization model, as in previous observations. At lower energies, however, we detect a prominent soft excess, which we model with a broad Gaussian centered at ∼0.5keV. In the high resolution RGS spectrum we detect a single emission line, centered at 19.19+0.05–0.09Å. We discuss two possible interpretations for this line: O VIII at redshift z=0.012+0.002–0.004 or Ne IX at redshift z∼0.4.

Abstract Copyright:

Journal keyword(s): X-rays: individuals: 4U 1700+24 - stars: neutron - stars: binaries: symbiotic - line: identification

Simbad objects: 3

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Number of rows : 3

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 V* UY Vol LXB 07 48 33.71 -67 45 07.7 16.10 17.00 16.9 16.7 17.05 ~ 570 0
2 V* V934 Her LP* 17 06 34.5143100938 +23 58 18.652285813 11.20 9.16 7.62     M2III 117 0
3 V* V1521 Cyg HXB 20 32 25.78 +40 57 27.9           WN4/5-6/7 1765 2

    Equat.    Gal    SGal    Ecl

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2020.07.05-06:22:27

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