2006A&A...445.1037B


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.19CEST13:33:41

2006A&A...445.1037B - Astronomy and Astrophysics, volume 445, 1037-1040 (2006/1-3)

RX J2133.7+5107: identification of a new long period Intermediate Polar.

BONNET-BIDAUD J.M., MOUCHET M., DE MARTINO D., SILVOTTI R. and MOTCH C.

Abstract (from CDS):

We report the first time-resolved photometric and spectroscopic optical observations of the X-ray source RXJ2133.7+5107, identified in the ROSAT survey. A clear persistent optical light pulsation is discovered with fast photometry at a period of Pω=(570.823±0.013)s which we associate with the spin period of an accreting white dwarf. Radial velocity curves of the strong emission lines show modulation with a period of PΩ=(7.193±0.016)h, identified as the orbital period. These observations establish that the source is a member of the intermediate polar class (IPs) of magnetic cataclysmic variables. With only 4 IPs with longer orbital periods, RXJ2133.7+5107 is among the widest systems. It is a unique IP with an orbital period in the middle of the so-called (6-10)h IP gap and it shows a significant degree of asynchronism with a ratio Pω/PΩ of 0.02. When attributed to the motion of the white dwarf, the emission lines orbital modulation yields a mass function of fm=(1.05±0.21)x10–2M which, for a probable inclination i≤45° and a white dwarf mass Mwd=(0.6-1.0)M, corresponds to a secondary mass Ms≥(0.27-0.37)M.

Abstract Copyright:

Journal keyword(s): stars: binaries: general - stars: individual: RXJ2133.7+5107 - stars: novae, cataclysmic variables - accretion, accretion disks - stars: variables: general - white dwarfs

Simbad objects: 8

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Number of rows : 8

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 V* GK Per No* 03 31 12.0096626899 +43 54 15.467450081   10.2 14.0     K1IV 859 0
2 V* V1062 Tau No* 05 02 27.4781389386 +24 45 23.157011296           ~ 60 0
3 V* NY Lup XB* 15 48 14.5960047636 -45 28 39.918343697     14.50 14.42   K0/3Ve 79 1
4 BD+33 2642 pA* 15 51 59.8857490337 +32 56 54.327647794 9.806 10.61 10.73 10.884 10.961 O7p 367 0
5 V* V2731 Oph DQ* 17 30 21.50 -05 59 33.5           ~ 71 0
6 V* AE Aqr DQ* 20 40 09.1598509019 -00 52 15.057042857   12.46 10.40   10.191 K3-5IV/V 600 0
7 RX J2133.7+5107 CV* 21 33 43.6347819631 +51 07 24.730222487   15.80       ~ 61 0
8 BD+28 4211 HS* 21 51 11.0220905905 +28 51 50.366090892 8.922 10.25 10.58 10.656 10.831 sdO2VIIIHe5 721 0

    Equat.    Gal    SGal    Ecl

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2019.10.19-13:33:41

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