2009MNRAS.395.1649C

Query : 2009MNRAS.395.1649C

2009MNRAS.395.1649C - Mon. Not. R. Astron. Soc., 395, 1649-1656 (2009/May-3)

Absolute parameters of the eclipsing binary V821 Cas from UBVRI light curves and radial velocities.

CAKIRLI O., IBANOGLU C., BILIR S. and SIPAHI E.

Abstract (from CDS):

We present UBVRI photometric measurements and spectroscopic observations of the double-lined eclipsing binary V821Cas. The radial velocities were obtained by means of the cross-correlation technique. Simultaneous analyses of the multiband light curves and RVs give the absolute parameters for the stars as: and. An analysis of the O-C residuals yielded an apsidal motion in the binary at a rate of, corresponding to an apsidal period of U = 118±19yr. Subtracting the relativistic contribution, we find that logk2obs= -2.590 which is in agreement with the value predicted by theoretical models. Comparison with current stellar evolution models gives an age of 5.6x108yr for the system.

Abstract Copyright: © 2009 The Authors. Journal compilation © 2009 RAS

Journal keyword(s): binaries: close - binaries: eclipsing - binaries: general - binaries: spectroscopic - stars: individual: V821Cas

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 HD 224814 * 00 00 54.0883127208 +53 15 49.201698744   9.27 9.20     A 9 0
2 * del03 Tau a2* 04 25 29.3847186643 +17 55 40.463442784   4.369 4.298 6.18 4.24 A2IV-Vs 429 0
3 * tau Her Pu* 16 19 44.4367980146 +46 18 48.102135319 3.190 3.73 3.87 4.00 4.16 B5V 417 0
4 * d Her * 17 01 36.3612969768 +33 34 05.766475152   5.288 5.267     A3IV 113 0
5 * alf Lyr dS* 18 36 56.33635 +38 47 01.2802 0.03 0.03 0.03 0.07 0.10 A0V 2787 1
6 * iot Psc PM* 23 39 57.0406036160 +05 37 34.653911951 4.640 4.620 4.120 3.68 3.37 F7V 641 0
7 V* V821 Cas SB* 23 58 49.1740046112 +53 40 19.813636128 8.440 8.370 8.260     A1V+A4V 49 0
8 HD 224611 * 23 59 11.9093829360 +53 33 47.409971976   7.24 7.07     A2 15 0

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