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

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

2009A&A...496..121B - Astronomy and Astrophysics, volume 496, 121-127 (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

Full paper

View the references in ADS

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 - 2024	#notes
1	V* V1033 Cas	CV*	00 22 57.6446300016	+61 41 07.571581872						~	53	0
2	V* V709 Cas	CV*	00 28 48.8267393856	+59 17 22.033767228			14.01			~	127	0
3	V* XY Ari	CV*	02 56 08.19048	+19 26 34.1844						~	157	1
4	V* GK Per	No*	03 31 12.0098863320	+43 54 15.469951212		14.139	13.090	12.589		K1IV	935	0
5	V* V1062 Tau	CV*	05 02 27.4778229096	+24 45 23.157957240						~	73	0
6	V* UU Col	CV*	05 12 13.2335083440	-32 41 39.743719692		17.72				~	46	0
7	V* TV Col	CV*	05 29 25.5292422792	-32 49 03.900212364		14.219	13.846	14.181		K2V	338	0
8	V* TX Col	CV*	05 43 20.16864	-41 01 54.2856					14.541	~	158	0
9	V* V405 Aur	CV*	05 57 59.2934496792	+53 53 44.926489464						~	131	0
10	V* MU Cam	XB*	06 25 16.2519466536	+73 34 39.105603804				14.3		~	70	0
11	V* BG CMi	CV*	07 31 29.0079060264	+09 56 23.030740248		14.5				~	228	0
12	SWIFT J0732.6-1330	XB*	07 32 37.7092986624	-13 31 08.343979248			15.7			~	43	0
13	V* PQ Gem	CV*	07 51 17.3280306912	+14 44 23.874868716		14.415	14.162	13.945		~	227	0
14	V* HT Cam	CV*	07 57 01.3362559272	+63 06 02.000945340		16.36				~	74	0
15	V* DW Cnc	CV*	07 58 53.0399000904	+16 16 45.169158720						~	72	0
16	V* WX Pyx	XB*	08 33 05.7636304080	-22 48 31.980809016		18.0				~	39	0
17	V* DO Dra	CV*	11 43 38.4921265896	+71 41 20.559036192				13.747		DQ	219	1
18	V* V1025 Cen	CV*	12 38 16.3191432264	-38 42 45.836441856		15.20				~	80	0
19	V* EX Hya	CV*	12 52 24.2222471899	-29 14 55.999766523		13.51	13.49	13.55		M5-6V	694	0
20	V* NY Lup	XB*	15 48 14.5961462732	-45 28 39.918849218				14.544		K0/3Ve	102	0
21	V* V2400 Oph	CV*	17 12 36.4233668016	-24 14 44.773987164			14.5			~	155	0
22	1H 1726-058	CV*	17 30 21.9016405464	-05 59 31.840375236		17.04	16.15			~	87	0
23	V* DQ Her	CV*	18 07 30.2510391864	+45 51 32.564791872		14.605	14.443	14.800		M3+Ve	1012	1
24	V* V1223 Sgr	CV*	18 55 02.3108012664	-31 09 49.584656268						~	333	0
25	V* V2306 Cyg	XB*	19 58 14.4693586728	+32 32 42.003103200	15.16	15.94	15.71	15.76		~	65	0
26	V* AE Aqr	CV*	20 40 09.1598959176	-00 52 15.055595220		12.46	10.40		10.191	K3-5IV/V	668	0
27	RX J2133.7+5107	CV*	21 33 43.6348450728	+51 07 24.729535560		15.80				~	79	0
28	V* FO Aqr	CV*	22 17 55.3796835600	-08 21 03.754995948						~	362	0
29	V* AO Psc	CV*	22 55 17.9860863984	-03 10 39.981831564						~	310	0

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