2014A&A...572A..71Z


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.10CEST02:14:06

2014A&A...572A..71Z - Astronomy and Astrophysics, volume 572A, 71-71 (2014/12-1)

Apsidal motion and a light curve solution for eighteen SMC eccentric eclipsing binaries.

ZASCHE P., WOLF M., VRASTIL J., LISKA J., SKARKA M. and ZEJDA M.

Abstract (from CDS):

The Danish 1.54-meter telescope at the La Silla observatory was used for photometric monitoring of selected eccentric eclipsing binaries located in the Small Magellanic Cloud. The new times of minima were derived for these systems, which are needed for accurate determination of the apsidal motion. Moreover, many new times of minima were derived from the photometric databases OGLE and MACHO. Eighteen early-type eccentric-orbit eclipsing binaries were studied. Their O-C diagrams of minima timings were analysed and the parameters of the apsidal motion were obtained. The light curves of these eighteen binaries were analysed using the program PHOEBE, giving the light curve parameters. For several systems, the additional third light also was detected. We derived for the first time and significantly improved the relatively short periods of apsidal motion from 19 to 142 years for these systems. The relativistic effects are weak, up to 10% of the total apsidal motion rate. For one system (OGLE-SMC-ECL-0888), the third-body hypothesis was also presented, which agrees with high value of the third light for this system detected during the light curve solution.

Abstract Copyright:

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

VizieR on-line data: <Available at CDS (J/A+A/572/A71): stars.dat minima.dat>

Simbad objects: 22

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Number of rows : 22

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 OGLE SMC-ECL- 720 Al* 00 44 08.63 -73 14 18.5 13.25 14.08 13.86 14.50 14.38 B0(IV) 13 0
2 OGLE SMC-SC3 157218 Al* 00 44 39.73 -72 59 58.5   16.75 16.91 17.12 17.00 B2 7 0
3 OGLE J004530.70-730329.2 Al* 00 45 30.64 -73 03 29.7 14.25 15.24 15.16 15.66 15.47 O9V 8 0
4 OGLE SMC-ECL- 1001 Al* 00 46 11.29 -72 35 17.3     18.308 18.49 18.443 B/A 4 0
5 OGLE SMC-SC4 163754 Al* 00 47 52.73 -73 16 34.0   17.21 17.23 17.39 17.19 B0 7 0
6 OGLE SMC-ECL- 1407 Al* 00 48 19.26 -72 21 40.2     16.876 16.76 17.027 B3 5 0
7 MOA J005134.7-724546 Al* 00 51 34.8532507182 -72 45 46.396184737 14.83 15.74 16.00 16.06 16.01 B0+B0/3 15 0
8 OGLE J005141.80-724105.7 Al* 00 51 41.80 -72 41 06.1   16.50 16.61 16.78 16.70 B3 6 0
9 OGLE J005146.64-725121.3 Al* 00 51 46.64 -72 51 22.1   17.14 16.127   16.243 B1 5 0
10 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9446 1
11 OGLE SMC-SC6 158178 Al* 00 52 42.32 -72 41 27.9   16.17 16.35 16.57 16.53 B2 9 0
12 OGLE SMC-ECL- 2534 Al* 00 52 43.93 -72 18 09.1   16.17 16.475 16.40 16.589 B0-5(IV) 6 0
13 OGLE SMC-ECL- 3594 Al* 00 57 26.4007848809 -72 36 46.239422761 14.99 16.00 16.09 16.38 16.33 B0-5(IV) 12 0
14 OGLE SMC-ECL- 3677 Al* 00 57 49.2600270621 -72 16 55.517781970     14.978 15.03 15.121 ~ 5 0
15 NGC 346 Cl* 00 59 05.090 -72 10 33.24           ~ 449 0
16 Cl* NGC 346 NMC 1 Al* 00 59 14.9984293376 -72 11 35.217276596 14.42 15.50 15.58   15.87 B1V 10 0
17 OGLE SMC-ECL- 4955 Al* 01 04 59.1893423049 -72 25 29.282955157 15.88 16.82 16.96 17.28 17.22 B0-5(V) 7 0
18 OGLE SMC-SC11 61515 Al* 01 07 12.5424807834 -72 11 42.032317856   14.72 15.102 15.17 15.338 B0 6 0
19 OGLE SMC-ECL- 5422 Al* 01 08 45.7151498431 -72 31 22.435903338 13.51 14.59 14.77 15.01 15.04 B0-5(II) 9 0
20 OGLE SMC-ECL- 5434 Al* 01 08 50.47 -72 17 26.1   14.68 15.39 15.40 15.54 B1-5(III) 9 0
21 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 5669 1
22 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14832 1

    Equat.    Gal    SGal    Ecl

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2020.07.10-02:14:06

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