2017MNRAS.472.2241Z

Query : 2017MNRAS.472.2241Z

2017MNRAS.472.2241Z - Mon. Not. R. Astron. Soc., 472, 2241-2248 (2017)

The first study of the light-traveltime effect in bright eclipsing binaries in the Small Magellanic Cloud.

ZASCHE P., WOLF M. and VRASTIL J.

Abstract (from CDS):

The first 100 brightest eclipsing systems from the Small Magellanic Cloud were studied for their period changes. The photometric data from the surveys OGLE-II, OGLE-III, OGLE-IV and MACHO were combined with our new CCD observations obtained using the Danish 1.54-m telescope (La Silla, Chile). Besides the period changes also the light curves were analysed using the program PHOEBE, which provided the physical parameters of both eclipsing components. For 14 of these systems the additional bodies were found, having the orbital periods from 2 to 20 yr and the eccentricities were found to be up to 0.9. Among the sample of studied 100 brightest systems we discussed the number of systems with particular period changes. About 10 per cent of these stars show eccentric orbit, about the same number have third bodies and about the same show the asymmetric light curves.

Abstract Copyright: 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): binaries: eclipsing - stars: early-type - stars: fundamental parameters - Magellanic Clouds

Simbad objects: 18

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Number of rows : 18
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 AzV 6A EB* 00 45 18.2049980897 -73 15 22.973938150         13.936 ~ 7 0
2 OGLE SMC100.5 31398 EB* 00 46 19.6527768288 -72 50 56.571375588   14.19 13.55   12.71 ~ 13 0
3 [MA93] 177 SB* 00 47 32.9154148944 -73 21 16.349136876   14.02 13.99   13.99 B0:III:+OBe 12 0
4 OGLE SMC100.6 14973 EB* 00 48 17.9698458288 -73 07 19.073016228   14.34 14.52   14.63 ~ 6 0
5 OGLE SMC101.1 7945 EB* 00 51 04.2863713584 -72 47 38.866506756   16.21 16.37 16.48 16.44 ~ 8 0
6 AzV 94 EB* 00 51 20.1877572072 -72 49 43.446917676 12.80 13.71 13.94   14.04 O9+O9 15 0
7 AzV 109 EB* 00 51 50.1404795064 -72 39 23.130224784   13.60 13.884 14.09 14.06 B0.5V:+B0-0.7 23 0
8 OGLE SMC101.1 39984 EB* 00 52 01.1676666481 -72 44 41.903201275   17.40 17.47 17.59 17.53 ~ 8 0
9 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
10 OGLE J005306.99-724620.6 EB* 00 53 07.0226120256 -72 46 21.064830636   14.88 15.14 15.26 15.28 ~ 10 0
11 Cl* NGC 346 W 4 EB* 00 59 00.0525662904 -72 10 37.962442344 11.82 12.93 13.13   13.77 O5-6V((f)) 43 0
12 OGLE SMC109.4 4600 EB* 00 59 20.4564760512 -71 21 42.416382312     14.579   13.616 ~ 9 0
13 OGLE SMC106.2 5345 EB* 00 59 31.1866005192 -73 26 56.177496564     15.865 15.43 14.782 ~ 6 0
14 OGLE SMC-ECL- 4024 EB* 00 59 34.1999088432 -72 46 57.977653368   13.85 14.09 14.15 14.28 B0.2V 14 0
15 2dFS 1749 EB* 01 03 13.9818597768 -72 25 07.637708136 13.16 14.28 14.48   14.76 O8.5V 15 0
16 MOA J010321.3-720538 SB* 01 03 21.3011685264 -72 05 38.152558428 12.06 13.15 13.36   13.95 O5V(n)+O6.5(n) 31 0
17 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
18 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0

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