2006ApJ...648.1169P

Query : 2006ApJ...648.1169P

2006ApJ...648.1169P - Astrophys. J., 648, 1169-1180 (2006/September-2)

Multiwavelength observations of EXO 0748-676. II. Emission-line behavior.

PEARSON K.J., HYNES R.I., STEEGHS D., JONKER P.G., HASWELL C.A., KING A.R., O'BRIEN K., NELEMANS G. and MENDEZ M.

Abstract (from CDS):

We present optical and ultraviolet spectra, light curves, and Doppler tomograms of the low-mass X-ray binary EXO 0748-676. Using an extensive set of 15 emission-line tomograms, we show that, along with the usual emission from the stream and ``hot spot'', there is extended nonaxisymmetric emission from the disk rim. Some of the emission and Hα and Hβ absorption features lend weight to the hypothesis that part of the stream overflows the disk rim and forms a two phase medium. The data are consistent with a 1.35 M☉neutron star with a main-sequence companion and hence a mass ratio q~0.34.

Abstract Copyright: ∼

Journal keyword(s): Accretion, Accretion Disks - Stars: Binaries: Close - stars: individual (UY Vol)

CDS comments: Par. 2.2, EG 21 not identified.

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 - 2026 		#notes
1 CPD-69 177 WD* 03 10 31.0195960176 -68 36 03.380768388 10.757 11.413 11.394 11.47 11.558 DA3.0 299 0
2 V* UY Vol LXB 07 48 33.71 -67 45 07.7 16.10 17.00 16.9 16.7 17.05 ~ 660 0
3 V* KV UMa HXB 11 18 10.7930420496 +48 02 12.314730120           K5V-M1V 865 0
4 V* V818 Sco LXB 16 19 55.0692669024 -15 38 25.017666540 11.60 12.40 11.1     Oev 1730 0
5 V* HZ Her LXB 16 57 49.8110126616 +35 20 32.486555472 11.90 14.89 13.63 13.88   B3/6ep 2172 0
6 V* V691 CrA LXB 18 25 46.8185061768 -37 06 18.529336656 14.30 15.20 15.1     ~ 461 0
7 V* LZ Aqr LXB 21 23 14.54 -05 47 52.9 15.90 16.78 16.8     ~ 154 0
8 4U 2129+12 LXB 21 29 58.3124 +12 10 02.670 14.50 15.70 15.8     ~ 326 1

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