2009A&A...496..121B

Query : 2009A&A...496..121B

2009A&A...496..121B - Astronomy and Astrophysics, volume 496121-127 (2009/3-2)

Intermediate polars in the Swift/BAT survey: spectra and white dwarf masses.

BRUNSCHWEIGER J., GREINER J., AJELLO M. and OSBORNE J.

Abstract (from CDS):

White dwarf masses in cataclysmic variables are difficult to determine accurately, but are fundamental for understanding binary system parameters, as well as binary evolution. We investigate the X-ray spectral properties of a sample of Intermediate Polars (IP) detected above 15keV to derive the masses of their accreting white dwarfs. We use data from the Swift/BAT instrument which during the first 2.5yrs of operation has detected 22 known intermediate polars. The X-ray spectra of these sources are used to estimate the mass of the white dwarfs. We are able to produce a mass estimate for 22 out of 29 of the confirmed intermediate polars. Comparison with previous mass measurements shows good agreement. For GK Per, we were able to detect spectral changes due to the changes in the accretion rate. The Swift/BAT detector with its combination of sensitivity and all-sky coverage provides an ideal tool to determine accurate white dwarf masses in intermediate polars. This method should be applied to other magnetic white dwarf binaries.

Abstract Copyright: ∼

Journal keyword(s): accretion, accretion disks - stars: binaries: general

Simbad objects: 29

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Number of rows : 29
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 V* V1033 Cas CV* 00 22 57.6446300016 +61 41 07.571581872           ~ 60 0
2 V* V709 Cas CV* 00 28 48.8267393856 +59 17 22.033767228     14.01     ~ 132 0
3 V* XY Ari CV* 02 56 08.19048 +19 26 34.1844           ~ 167 1
4 V* GK Per No* 03 31 12.0098863320 +43 54 15.469951212   14.139 13.090 12.589   K1IV 986 0
5 V* V1062 Tau CV* 05 02 27.4778229096 +24 45 23.157957240   17.159 16.717 16.319   ~ 85 0
6 V* UU Col CV* 05 12 13.2335083440 -32 41 39.743719692   17.72       ~ 50 0
7 V* TV Col CV* 05 29 25.5292422792 -32 49 03.900212364   14.219 13.846 14.181   K2V 362 0
8 V* TX Col CV* 05 43 20.16864 -41 01 54.2856         14.541 ~ 167 0
9 V* V405 Aur CV* 05 57 59.2934496792 +53 53 44.926489464           ~ 140 0
10 V* MU Cam XB* 06 25 16.2519466536 +73 34 39.105603804       14.3   ~ 77 0
11 V* BG CMi CV* 07 31 29.0079060264 +09 56 23.030740248   14.5       ~ 246 0
12 SWIFT J0732.6-1330 XB* 07 32 37.7092986624 -13 31 08.343979248     15.7     ~ 50 0
13 V* PQ Gem CV* 07 51 17.3280306912 +14 44 23.874868716   14.415 14.162 13.945   ~ 237 0
14 V* HT Cam CV* 07 57 01.3362559272 +63 06 02.000945340   16.36       ~ 78 0
15 V* DW Cnc CV* 07 58 53.0399000904 +16 16 45.169158720           ~ 85 0
16 V* WX Pyx XB* 08 33 05.7636304080 -22 48 31.980809016   18.0       ~ 44 0
17 V* DO Dra CV* 11 43 38.4921265896 +71 41 20.559036192       13.747   DQ 233 1
18 V* V1025 Cen CV* 12 38 16.3191432264 -38 42 45.836441856   15.20       ~ 90 0
19 V* EX Hya CV* 12 52 24.2222471899 -29 14 55.999766523   13.505 13.491 13.549   M5-6V 730 0
20 V* NY Lup XB* 15 48 14.5961462732 -45 28 39.918849218       14.544   K0/3Ve 109 0
21 V* V2400 Oph CV* 17 12 36.4233668016 -24 14 44.773987164     14.5     ~ 169 0
22 1H 1726-058 CV* 17 30 21.9016405464 -05 59 31.840375236   17.04 16.15     ~ 96 0
23 V* DQ Her CV* 18 07 30.2510391864 +45 51 32.564791872   14.605 14.443 14.800   M3+Ve 1048 1
24 V* V1223 Sgr CV* 18 55 02.3108012664 -31 09 49.584656268           ~ 347 0
25 V* V2306 Cyg XB* 19 58 14.4693586728 +32 32 42.003103200 15.16 15.94 15.71 15.759   ~ 74 0
26 V* AE Aqr CV* 20 40 09.1598959176 -00 52 15.055595220   12.46 10.40   10.191 K3-5IV/V 705 0
27 RX J2133.7+5107 CV* 21 33 43.6348450728 +51 07 24.729535560   15.80       ~ 89 0
28 V* FO Aqr CV* 22 17 55.3796835600 -08 21 03.754995948   13.533 13.445 13.414   ~ 378 0
29 V* AO Psc CV* 22 55 17.9860863984 -03 10 39.981831564           ~ 327 0

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