2007PASJ...59S.177M


C.D.S. - SIMBAD4 rel 1.7 - 2020.03.31CEST16:39:44

2007PASJ...59S.177M - Publ. Astron. Soc. Jap., 59, 177-183 (2007/January-0)

An apparent hard X-ray decline of CH Cygni.

MUKAI K., ISHIDA M., KILBOURNE C., MORI H., TERADA Y., CHAN K.-W. and SOONG Y.

Abstract (from CDS):

CH Cygni is a symbiotic star consisting of an M giant and an accreting white dwarf, which is known to be a highly variable X-ray source with a complex, two-component, spectra. Here, we report on two Suzaku observations of CH Cyg, taken in 2006 January and May, during which the system was seen to be in a soft X-ray bright, hard X-ray faint state. Based on the extraordinary strength of the 6.4keV fluorescent Fe Kα line, we show that the hard X-rays observed with Suzaku are dominated by scattering.

Abstract Copyright:

Journal keyword(s): accretion, accretion disk - stars: binaries: symbiotic - stars: individual (CH Cyg) - X-rays: stars

Status at CDS:  

Simbad objects: 5

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Number of rows : 5

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 * alf Tau LP? 04 35 55.23907 +16 30 33.4885 4.32 2.40 0.86 -0.37 -1.31 K5+III 1177 1
2 * alf Ori s*r 05 55 10.30536 +07 24 25.4304 4.38 2.27 0.42 -1.17 -2.45 M1-M2Ia-Iab 1456 0
3 * alf Boo RG* 14 15 39.67207 +19 10 56.6730 2.46 1.18 -0.05 -1.03 -1.68 K1.5IIIFe-0.5 2117 0
4 V* V603 Aql No* 18 48 54.6369118792 +00 35 02.855110952 10.73 11.65 11.64     OB+e: 508 0
5 V* CH Cyg Sy* 19 24 33.0697620341 +50 14 29.057625755 8.14 8.77 7.08   5.345 M7IIIab+Be 736 0

    Equat.    Gal    SGal    Ecl

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2020.03.31-16:39:44

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