2018MNRAS.480.4557L

Query : 2018MNRAS.480.4557L

2018MNRAS.480.4557L - Mon. Not. R. Astron. Soc., 480, 4557-4577 (2018/November-2)

A study of the light travel time effect in short-period MOA eclipsing binaries via eclipse timing.

LI M.C.A., RATTENBURY N.J., BOND I.A., SUMI T., BENNETT D.P., KOSHIMOTO N., ABE F., ASAKURA Y., BARRY R., BHATTACHARYA A., DONACHIE M., EVANS P., FUKUI A., HIRAO Y., ITOW Y., MASUDA K., MATSUBARA Y., MURAKI Y., NAGAKANE M., OHNISHI K., SAITO T., SHARAN A., SULLIVAN D.J., SUZUKI D., TRISTRAM P.J. and YONEHARA A.

Abstract (from CDS):

A sample of 542 eclipsing binaries (EBs) with periods shorter than 2 days was selected from the Microlensing Observations in Astrophysics (MOA) EB catalogue (Li et al.) for eclipse-time variation analysis. For this sample, we were able to obtain a time series from MOA-II spanning 9.5 yr. We discovered 91 EBs, out of the 542 EBs, with detected light-travel-time effect signals suggesting the presence of tertiary companions with orbiting periods from 250 d-28 yr. The frequency of EBs with tertiary companions in our sample increases as the period decreases and reaches a value of 0.65 for contact binaries with periods shorter than 0.3 d. If only those contact binaries with periods <0.26 d are considered, the frequency even goes to unity. Our results suggest that contact binaries with periods close to the 0.22-d contact binary limit are commonly accompanied by relatively close tertiary companions.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): methods: analytical - binaries: close - binaries: eclipsing

Simbad objects: 101

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Number of rows : 101
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 * bet Per SB* 03 08 10.1324535 +40 57 20.328013 1.70 2.07 2.12 2.08 2.11 B8V 1265 1
2 OGLE BLG-ECL-208115 EB* 17 57 23.8814017317 -26 50 46.209581273     17.238   15.671 ~ 6 0
3 OGLE BLG-ECL-212645 EB* 17 57 46.4535870072 -26 44 53.162197980     17.193   15.640 ~ 5 0
4 OGLE BLG-ECL-214370 EB* 17 57 56.4624401880 -26 49 06.168048276     19.510   17.596 ~ 5 0
5 OGLE BLG-ECL-215828 EB* 17 58 03.7992596579 -26 42 10.698900202     18.819   16.505 ~ 3 0
6 OGLE BLG-ECL-217812 EB* 17 58 13.7731584312 -26 48 28.082910096     19.468   17.713 ~ 5 0
7 OGLE BLG-ECL-218881 EB* 17 58 19.1888797248 -26 47 25.727095392     18.880   17.053 ~ 4 0
8 OGLE BLG-ECL-218957 EB* 17 58 19.5597806376 -26 41 51.627855732     17.655   15.976 ~ 5 0
9 OGLE BLG-ECL-219107 EB* 17 58 20.2928668464 -26 41 47.103082440     19.299   17.270 ~ 5 0
10 OGLE BLG-ECL-219898 EB* 17 58 24.0808020800 -26 44 28.192311232     15.676   14.363 ~ 5 0
11 OGLE BLG-ECL-220558 EB* 17 58 27.4064823432 -26 45 20.238699060     17.170   15.625 ~ 5 0
12 OGLE BLG-ECL-221139 EB* 17 58 30.4570564992 -26 42 21.156421644     20.161   17.233 ~ 4 0
13 OGLE BLG-ECL-222547 EB* 17 58 38.4574123080 -26 56 15.104429628     20.279   18.094 ~ 4 0
14 OGLE BLG-ECL-222551 EB* 17 58 38.4756718200 -26 49 06.466962936     20.749   18.459 ~ 4 0
15 OGLE BLG-ECL-223002 EB* 17 58 41.2042171855 -26 55 47.370623874     17.519   15.893 ~ 5 0
16 OGLE BLG-ECL-223209 EB* 17 58 42.2910225000 -26 46 08.095796940         17.275 ~ 5 0
17 OGLE BLG-ECL-223302 EB* 17 58 42.7753860072 -26 54 19.994889348     20.071   17.852 ~ 5 0
18 OGLE BLG-ECL-224212 EB* 17 58 47.2597597440 -26 48 02.559092364     17.015   15.422 ~ 5 0
19 OGLE BLG-ECL-224344 EB* 17 58 47.9136339888 -26 50 46.496576436     16.895   15.387 ~ 8 0
20 OGLE BLG-ECL-224811 EB* 17 58 50.2371219936 -26 56 39.895758744     18.094   16.391 ~ 7 0
21 OGLE BLG-ECL-227164 EB* 17 59 02.0731733952 -26 53 08.008610100         18.689 ~ 4 0
22 OGLE BLG-ECL-227231 EB* 17 59 02.4131007624 -26 46 54.432519636     17.872   15.982 ~ 5 0
23 OGLE BLG-ECL-227801 EB* 17 59 05.2415288856 -26 53 46.419211788     15.821   14.588 ~ 6 0
24 OGLE BLG-ECL-228741 EB* 17 59 09.9003592896 -26 56 40.642509840     17.400   15.878 ~ 6 0
25 OGLE BLG-ELL-15119 EB* 17 59 35.2166313552 -26 52 45.271488432     17.138   15.474 ~ 5 0
26 OGLE BLG-ECL-234140 EB* 17 59 39.53 -26 52 00.0         19.140 ~ 4 0
27 OGLE BLG-ECL-234147 EB* 17 59 39.6069036984 -26 56 20.931755280     17.944   16.284 ~ 5 0
28 OGLE BLG-ECL-235836 EB* 17 59 48.06 -26 50 31.8     20.794   18.331 ~ 4 0
29 OGLE BLG-ECL-240220 EB* 18 00 11.7757756416 -28 59 34.105437744     19.062   17.422 ~ 5 0
30 OGLE BLG-ECL-240884 EB* 18 00 15.57 -29 02 51.5     20.082   18.050 ~ 5 0
31 OGLE BLG-ECL-241299 EB* 18 00 17.7184178712 -28 57 51.552141804     18.429   16.920 ~ 6 0
32 OGLE BLG-ECL-241307 EB* 18 00 17.7295033008 -28 50 55.856152284     18.238   16.892 ~ 5 0
33 OGLE BLG-ECL-241803 EB* 18 00 20.20 -29 01 45.8     18.567   17.081 ~ 4 0
34 OGLE BLG-ECL-241936 EB* 18 00 20.7333451056 -28 48 58.301135208     16.991   15.757 ~ 6 0
35 OGLE BLG-ECL-242222 EB* 18 00 22.30 -28 55 36.9         18.942 ~ 4 0
36 OGLE BLG-ECL-242292 EB* 18 00 22.6718765136 -28 46 28.662510252     18.026   16.615 ~ 5 0
37 OGLE BLG-ECL-242648 EB* 18 00 24.4113058296 -28 48 43.540205220     15.600   14.497 ~ 6 0
38 OGLE BLG-ECL-242848 EB* 18 00 25.4600154168 -29 01 56.133829776     17.172   15.878 ~ 6 0
39 OGLE BLG-ECL-244252 EB* 18 00 32.9775585288 -29 00 38.500979436     17.377   16.334 ~ 6 0
40 OGLE BLG512.16 14328 EB* 18 00 34.4099173512 -28 47 59.005546188     18.845   17.458 ~ 5 0
41 OGLE BLG-ECL-244881 EB* 18 00 36.6520461024 -28 52 35.968830168     18.237   16.986 ~ 4 0
42 OGLE BLG-ECL-245163 EB* 18 00 38.2868377512 -29 02 04.217814384     17.591   16.455 ~ 6 0
43 OGLE BLG-ECL-245296 EB* 18 00 38.9882975064 -28 48 46.244576268     17.802   16.731 ~ 5 0
44 OGLE BLG-ECL-245557 EB* 18 00 40.3469431032 -27 44 29.171522616     16.075   14.801 ~ 5 0
45 OGLE BLG-ECL-245767 EB* 18 00 41.4156369288 -28 59 34.692390312     18.697   17.475 ~ 4 0
46 OGLE BLG-ECL-246485 EB* 18 00 45.1726234961 -28 59 32.145363340     18.785   17.300 ~ 4 0
47 OGLE BLG-ECL-246742 EB* 18 00 46.5159416640 -28 56 13.014730500     16.590   14.810 ~ 4 0
48 OGLE BLG-ECL-247165 EB* 18 00 48.9204748440 -28 52 42.784717440     16.553   15.388 ~ 6 0
49 OGLE BLG-ECL-247869 EB* 18 00 52.6265212922 -28 47 55.039598211     15.956   14.837 ~ 4 0
50 OGLE BLG-ECL-248343 EB* 18 00 54.9574388664 -28 51 30.701448468     17.640   16.382 ~ 4 0
51 OGLE BLG-ECL-250144 EB* 18 01 03.9229243824 -28 52 49.212765048     18.617   16.897 ~ 4 0
52 OGLE BLG-ELL-16311 EB* 18 01 07.5295511736 -28 48 33.133533300     17.765   16.334 ~ 5 0
53 OGLE BLG-ECL-251305 EB* 18 01 10.1666382716 -28 49 52.409915502     16.164   15.105 ~ 5 0
54 OGLE BLG-ECL-251402 EB* 18 01 10.6447603272 -28 49 51.110898276     16.825   15.654 ~ 7 0
55 OGLE BLG-ECL-251418 EB* 18 01 10.7741565370 -28 49 34.222468401     17.842   16.551 ~ 6 0
56 OGLE BLG-ECL-252268 EB* 18 01 15.3057286728 -28 44 00.652878492     16.999   15.681 ~ 4 0
57 OGLE BLG-ECL-252308 EB* 18 01 15.5407992720 -28 49 06.937354704     18.210   16.907 ~ 5 0
58 OGLE BLG-ECL-253285 EB* 18 01 21.2276083392 -28 56 58.676389044     18.830   17.351 ~ 5 0
59 OGLE BLG-ECL-253661 EB* 18 01 23.16 -28 51 07.5     19.831   18.031 ~ 3 0
60 OGLE BLG-ECL-253670 EB* 18 01 23.2146615336 -28 49 41.624909472     19.555   18.089 ~ 4 0
61 OGLE BLG-ECL-253859 EB* 18 01 24.2298300072 -28 53 23.128320624     18.463   17.038 ~ 6 0
62 OGLE BLG-ECL-253962 EB* 18 01 24.7842739656 -28 47 03.674118372     17.827   16.506 ~ 6 0
63 OGLE BLG-ECL-254119 EB* 18 01 25.7034336096 -29 02 37.260540456     18.989   17.422 ~ 6 0
64 OGLE BLG-ECL-256377 EB* 18 01 38.6253357096 -28 52 30.974323728     17.640   16.298 ~ 6 0
65 OGLE BLG-ECL-256845 EB* 18 01 41.1545366376 -28 57 51.634450080     17.415   15.838 ~ 5 0
66 OGLE BLG-ECL-256852 EB* 18 01 41.1816773280 -29 01 27.528896496     17.946   16.603 ~ 4 0
67 OGLE BLG-ECL-256943 EB* 18 01 41.69 -28 44 24.4     20.149   18.196 ~ 5 0
68 OGLE BLG-ECL-258794 EB* 18 01 51.7286717136 -29 01 38.335238652     19.338   17.630 ~ 5 0
69 OGLE BLG-ECL-258850 EB* 18 01 52.0763903784 -28 46 36.476369328     17.351   16.339 ~ 4 0
70 OGLE BLG-ECL-258917 EB* 18 01 52.5197048352 -28 50 15.295943544     16.989   15.845 ~ 4 0
71 OGLE BLG-ECL-259022 EB* 18 01 53.1848057260 -28 46 41.214680980     18.645   17.128 ~ 5 0
72 OGLE BLG-ECL-259038 EB* 18 01 53.25 -28 54 06.9         18.580 ~ 4 0
73 OGLE BLG-ECL-259694 EB* 18 01 56.85 -28 48 01.6     19.502   18.048 ~ 4 0
74 OGLE BLG-ECL-259789 EB* 18 01 57.3293613576 -28 57 53.695051308     19.252   17.772 ~ 4 0
75 OGLE BLG512.6 26443 EB* 18 01 57.7484243952 -29 03 00.562820940     18.111   16.754 ~ 8 0
76 OGLE BLG-ECL-260381 EB* 18 02 00.8496558504 -27 06 42.980006160     17.795   16.284 ~ 5 0
77 OGLE BLG-ECL-260412 EB* 18 02 01.0488169416 -28 52 53.689076256     19.229   17.543 ~ 4 0
78 OGLE BLG-ECL-260635 EB* 18 02 02.43 -28 59 14.8     20.033   18.184 ~ 5 0
79 OGLE BLG-ECL-261048 EB* 18 02 04.7822511432 -28 46 12.674574912     17.613   16.285 ~ 6 0
80 OGLE BLG-ECL-261873 EB* 18 02 09.4923704208 -28 52 23.589543216     19.067   17.893 ~ 4 0
81 OGLE BLG-ECL-262173 EB* 18 02 11.1957042288 -29 02 44.824006860     18.169   16.887 ~ 4 0
82 OGLE BLG-ECL-262733 EB* 18 02 14.4151327488 -28 50 46.527982260     17.484   16.307 ~ 6 0
83 OGLE BLG512.5 151270 EB* 18 02 15.1421684856 -28 59 38.549691096     17.093   16.098 ~ 6 0
84 OGLE BLG-ECL-263378 EB* 18 02 17.9795148528 -28 52 25.926045636     18.374   16.899 ~ 5 0
85 OGLE BLG-ECL-264297 EB* 18 02 23.1557053656 -28 49 19.345696356     17.430   16.215 ~ 4 0
86 OGLE BLG-ECL-264832 EB* 18 02 25.9842857448 -28 57 10.770354108     17.164   16.023 ~ 5 0
87 OGLE BLG-ECL-264882 EB* 18 02 26.24 -28 50 27.0     19.458   18.023 ~ 4 0
88 OGLE BLG-ECL-266003 EB* 18 02 32.0790918912 -28 58 58.335484836     17.630   16.518 ~ 6 0
89 OGLE BLG-ECL-266461 EB* 18 02 34.5753548252 -28 58 58.078691268     18.589   16.615 ~ 5 0
90 OGLE BLG-ECL-266492 EB* 18 02 34.6983831168 -28 58 42.387202920     18.181   17.163 ~ 5 0
91 OGLE BLG-ECL-266615 EB* 18 02 35.3756645568 -28 55 03.851819040     18.311   16.869 ~ 4 0
92 OGLE BLG-ECL-267087 EB* 18 02 37.8983841504 -28 48 38.971857168     17.150   15.908 ~ 5 0
93 OGLE BLG-ECL-268413 EB* 18 02 45.8400598752 -28 59 11.420357460     17.867   16.733 ~ 6 0
94 OGLE BLG-ECL-268697 EB* 18 02 47.35 -29 01 03.4     19.625   18.240 ~ 5 0
95 OGLE BLG-ECL-269093 EB* 18 02 49.4689406664 -29 01 28.358203656     16.451   15.230 ~ 4 0
96 OGLE BLG-ECL-269305 EB* 18 02 50.6110784760 -28 58 46.238010492     16.120   14.630 ~ 4 0
97 OGLE BLG-ECL-270259 EB* 18 02 56.1515868216 -28 50 05.832930480     18.452   17.010 ~ 4 0
98 OGLE BLG512.4 159899 EB* 18 02 58.1276682456 -28 56 17.988187308         18.000 ~ 6 0
99 OGLE BLG-ECL-270617 EB* 18 02 58.2701784168 -28 49 30.645180588     17.417   16.173 ~ 6 0
100 OGLE BLG-ECL-271570 EB* 18 03 03.5358586488 -28 58 10.606310868         17.224 ~ 4 0
101 NAME Galactic Bulge reg ~ ~           ~ 4794 0

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