2000A&A...356..134W

Query : 2000A&A...356..134W

2000A&A...356..134W - Astronomy and Astrophysics, volume 356134-140 (2000/4-1)

Apsidal motion in southern eccentric eclipsing binaries: YY Sgr, V523 Sgr, V1647 Sgr, V2283 Sgr and V760 Sco.

WOLF M.

Abstract (from CDS):

Several new times of minimum light recorded with photoelectric means have been gathered for the early-type eccentric eclipsing binaries YY Sgr (P=2.63d e=0.16), V523 Sgr (2.32d, 0.16), V1647 Sgr (3.28d, 0.41), V2283 Sgr (3.47d, 0.49) and V760 Sco (1.73d, 0.03). The O-C diagrams are analyzed using all reliable timings found in the literature and improved values for the elements of the apsidal motion are computed. We find more precise periods of apsidal motion of about 290, 202, 531, 528 and 38.5 years for YY Sgr, V523 Sgr V1647 Sgr, V2283 Sgr and V760 Sco, respectively. The corresponding internal structure constants log k2 are derived and compared to their theoretical values.

Abstract Copyright: ∼

Journal keyword(s): stars: binaries: eclipsing - stars: fundamental parameters - stars: general

Simbad objects: 16

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Number of rows : 16
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 * zet Phe SB* 01 08 23.0805843521 -55 14 44.736015873   3.908 4.014     B6V+B9V 243 0
2 V* OX Cas EB* 01 09 00.0985736544 +61 28 14.847725676 9.71 10.18 9.9     B6+G0 101 0
3 HD 71487 SB* 08 26 17.7300667968 -39 03 32.258348136   6.43 6.49 7.44   B8V 74 0
4 V* GL Car EB* 11 14 39.8366304912 -60 39 36.364706856 9.09 10.02 9.74 9.86   B3:V 90 0
5 V* V760 Sco SB* 16 24 43.7182304928 -34 53 37.529154204   7.16 7.05     B4V 176 0
6 V* U Oph SB* 17 16 31.7137908168 +01 12 37.998551304   5.941 5.921     B3V 388 1
7 HD 163708 SB* 17 59 13.4703104784 -36 56 19.839700356   7.155 7.089 8.09   A3III 122 0
8 V* V2283 Sgr EB* 18 04 38.8085776392 -36 54 52.682824872   10.44 10.38     A0 32 0
9 V* YY Sgr SB* 18 44 35.8393954416 -19 23 23.033743368   10.25 10.17     B8/9II 75 1
10 V* V523 Sgr EB* 19 02 54.6008065584 -29 08 33.785141820   10.00 9.59     A3/5II/III 43 0
11 V* V1143 Cyg SB* 19 38 41.1829269072 +54 58 25.647010572       5.6   F6Va 229 0
12 V* DR Vul EB* 20 13 46.8508993704 +26 45 01.628896644   8.94 8.71     B8 89 0
13 V* V478 Cyg SB* 20 19 38.7476920032 +38 20 09.195280836   9.16 8.767     B0Vp 195 0
14 V* Y Cyg SB* 20 52 03.5771840640 +34 39 27.486121104 6.31 7.23 7.32     O9.5IV+O9.5IV 382 0
15 V* CO Lac SB* 22 46 30.0011308824 +56 49 31.635247764   10.46 10.40     B9V 119 0
16 HD 218066 Be* 23 04 02.2270838832 +63 23 48.722060508 7.50 7.97 7.6     B1.5Vn 290 0

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