2007A&A...473..185B


Query : 2007A&A...473..185B

2007A&A...473..185B - Astronomy and Astrophysics, volume 473, 185-189 (2007/10-1)

IGR J00234+6141: a new INTEGRAL source identified as an intermediate polar.

BONNET-BIDAUD J.M., DE MARTINO D., FALANGA M., MOUCHET M. and MASETTI N.

Abstract (from CDS):

Following an extensive survey of the galactic plane by the INTEGRAL satellite, new hard X-ray sources are discovered with a significant fraction of Cataclysmic Variables (CVs) among them. We report here the identification of one of these hard X-ray sources, IGR J00234+6141, as an accreting magnetic white dwarf of intermediate polar type. We analyse the high energy emission of the INTEGRAL source using all available data and provide complementary optical photometric and spectroscopic data obtained in August and October 2006, respectively. Based on a refined INTEGRAL position, we confirm the proposed optical identification. We clearly detect the presence of a 564s periodic optical modulation that we identify as the rotation of the white dwarf. The analysis of the optical spectrum also demonstrates that the emission lines show a modulation in radial velocity with an orbital period of Porb=(4.033±0.005)h. The two periodicities indicate that IGRJ00234+6141 is a magnetic CV of the intermediate polar type. This is one of the faintest and hardest sources of this type detected by INTEGRAL. This confirms earlier conclusions that intermediate polars contribute significantly to the population of galactic X-ray sources and represent a significant fraction of the high energy background.

Abstract Copyright:

Journal keyword(s): stars: binaries: general - stars: individual: IGR J00234+6141 - stars: white dwarf - novae, cataclysmic variables - X-ray: binaries

Simbad objects: 6

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Number of rows : 6
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 V* V1033 Cas CV* 00 22 57.6446300016 +61 41 07.571581872           ~ 50 0
2 V* V709 Cas CV* 00 28 48.8267393856 +59 17 22.033767228     14.01     ~ 124 0
3 V* BY Cam CV* 05 42 48.8013535344 +60 51 31.376128608   16.60       ~ 251 0
4 V* NY Lup XB* 15 48 14.5961459448 -45 28 39.918848376     14.50 14.42   K0/3Ve 95 1
5 V* V1432 Aql CV* 19 40 11.4199326288 -10 25 25.771706256     14.40 15.437   ~ 163 0
6 V* SS Cyg CV* 21 42 42.8034497592 +43 35 09.867842484 11.07 12.651 12.032 9.326   K5V 1268 1

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2023.02.04-09:59:08

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