2017A&A...606A..92M


Query : 2017A&A...606A..92M

2017A&A...606A..92M - Astronomy and Astrophysics, volume 606A, 92-92 (2017/10-1)

Gaia eclipsing binary and multiple systems. Two-Gaussian models applied to OGLE-III eclipsing binary light curves in the Large Magellanic Cloud.

MOWLAVI N., LECOEUR-TAIBI I., HOLL B., RIMOLDINI L., BARBLAN F., PRSA A., KOCHOSKA A., SUVEGES M., EYER L., NIENARTOWICZ K., JEVARDAT G., CHARNAS J., GUY L. and AUDARD M.

Abstract (from CDS):

Context. The advent of large scale multi-epoch surveys raises the need for automated light curve (LC) processing. This is particularly true for eclipsing binaries (EBs), which form one of the most populated types of variable objects. The Gaia mission, launched at the end of 2013, is expected to detect of the order of few million EBs over a five-year mission.
Aims. We present an automated procedure to characterize EBs based on the geometric morphology of their LCs with two aims: first to study an ensemble of EBs on a statistical ground without the need to model the binary system, and second to enable the automated identification of EBs that display atypical LCs.
Methods. We modeled the folded LC geometry of EBs using up to two Gaussian functions for the eclipses and a cosine function for any ellipsoidal-like variability that may be present between the eclipses. The procedure is applied to the OGLE-III data set of EBs in the Large Magellanic Cloud (LMC) as a proof of concept. The Bayesian information criterion is used to select the best model among models containing various combinations of those components, as well as to estimate the significance of the components.
Results. Based on the two-Gaussian models, EBs with atypical LC geometries are successfully identified in two diagrams, using the Abbe values of the original and residual folded LCs, and the reduced χ2. Cleaning the data set from the atypical cases and further filtering out LCs that contain non-significant eclipse candidates, the ensemble of EBs can be studied on a statistical ground using the two-Gaussian model parameters. For illustrative purposes, we present the distribution of projected eccentricities as a function of orbital period for the OGLE-III set of EBs in the LMC, as well as the distribution of their primary versus secondary eclipse widths.

Abstract Copyright: © ESO, 2017

Journal keyword(s): binaries: eclipsing - Magellanic Clouds - methods: data analysis - catalogs - surveys - surveys

VizieR on-line data: <Available at CDS (J/A+A/606/A92): o3lmcebs.dat>

Status at CDS : All or part of tables of objects will not be ingested in SIMBAD.

Simbad objects: 45

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Number of rows : 45
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 10463 1
2 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 6496 1
3 2MASS J04480250-6847160 LP* 04 48 02.5052577000 -68 47 16.013830308     17.02 15.662 15.229 ~ 8 0
4 OGLE LMC-DPV-12 EB* 04 54 20.39 -67 06 01.5     15.201   15.020 ~ 5 0
5 OGLE LMC-ECL-2594 EB* 04 54 27.4714177200 -66 54 27.085560084     14.249   14.402 ~ 4 0
6 2MASS J04564327-6934157 LP* 04 56 43.2787518120 -69 34 15.629954052     17.134 15.728 15.598 ~ 5 0
7 OGLE LMC-ECL-5145 EB* 05 01 07.6810268160 -69 22 00.772196448     17.549   17.549 ~ 5 0
8 OGLE J050140.27-685106.0 EB* 05 01 40.2045645384 -68 51 05.394759480     15.269 15.35 15.384 ~ 9 0
9 OGLE LMC-SC15 164995 LP* 05 01 40.51 -68 38 40.7     16.595 15.234 15.055 ~ 5 0
10 OGLE LMC-ECL-7150 EB* 05 05 48.86 -69 28 03.2   16.96 16.765 17.22 16.846 ~ 5 0
11 2MASS J05062299-6912031 LP* 05 06 22.9835688312 -69 12 03.191054148     17.08 15.019 14.900 ~ 4 0
12 OGLE LMC-ECL-7551 EB* 05 06 39.2826133320 -70 30 42.796432620     14.804 14.899 15.042 ~ 6 0
13 OGLE LMC-ECL-9002 EB* 05 10 04.18 -70 35 25.0     17.873 17.918 17.976 ~ 6 0
14 2MASS J05103671-7004135 LP* 05 10 36.7001915928 -70 04 13.523437704     17.28 15.982 15.778 ~ 8 0
15 OGLE LMC-ECL-9699 EB* 05 11 53.5438959696 -67 38 57.781369896     16.143 15.97 15.992 ~ 5 0
16 OGLE LMC-ECL-9879 EB* 05 12 20.0979993888 -67 07 31.673805708     16.220   16.325 ~ 5 0
17 OGLE LMC-ECL-10156 EB* 05 13 06.1057516920 -69 34 34.557675204   15.76 15.689 15.91 15.753 ~ 5 0
18 OGLE LMC-ECL-10157 EB* 05 13 06.3356349432 -69 01 09.491472732     15.153   15.263 ~ 4 0
19 OGLE LMC-ECL-10282 EB* 05 13 22.40 -70 02 39.2     17.791 17.33 17.013 ~ 6 0
20 OGLE LMC-ECL-11591 EB* 05 16 36.949 -68 38 38.00     17.55 16.65 15.485 ~ 5 0
21 OGLE LMC-SC8 318791 EB* 05 17 06.9397672896 -69 20 13.144574688   15.62 15.528 15.79 15.590 ~ 6 0
22 OGLE LMC-ECL-12035 EB* 05 17 44.82 -69 37 39.6     16.977   16.537 ~ 4 0
23 OGLE LMC-SC6 390961 EB* 05 22 06.71 -69 46 29.1     17.738 17.64 17.535 ~ 7 0
24 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 16407 1
25 OGLE LMC-ECL-16373 EB* 05 27 47.8534896936 -69 10 26.686293096   15.17 15.016 15.35 15.165 ~ 5 0
26 OGLE LMC-ECL-16549 EB* 05 28 09.41 -69 45 28.6     18.216   17.731 ~ 10 0
27 OGLE LMC-ECL-16601 EB* 05 28 15.9532016256 -69 59 11.032313460     18.300   18.186 ~ 2 0
28 OGLE LMC-ECL-16745 EB* 05 28 32.7579756216 -68 28 23.855844288     15.960   14.969 ~ 5 0
29 OGLE LMC-ECL-17212 EB* 05 29 26.4269591040 -69 02 47.948821008     15.121   15.261 ~ 4 0
30 OGLE LMC-ECL-17782 EB* 05 30 36.8835369432 -69 06 23.933881440     15.737 15.79 15.805 ~ 14 0
31 OGLE LMC-ECL-18047 EB* 05 31 09.0606861240 -69 24 30.256158384     14.881   15.038 ~ 4 0
32 OGLE LMC-ECL-18163 EB* 05 31 23.3582104392 -69 44 59.222572980     17.043   17.069 ~ 5 0
33 OGLE LMC-ECL-18330 EB* 05 31 44.9554664160 -68 34 52.534836624   16.04 16.065 16.15 16.078 ~ 6 0
34 OGLE LMC-ECL-18577 EB* 05 32 16.30 -70 33 28.7     16.774   16.821 ~ 4 0
35 OGLE LMC-ECL-19318 EB* 05 33 56.1283751928 -69 08 07.483694604     14.255 14.59 14.222 ~ 7 0
36 OGLE LMC-ECL-19624 Em* 05 34 39.7038277320 -68 21 55.592867160   15.79 15.790 16.01 15.916 B2Ve 9 0
37 OGLE J053517.75-694318.7 EB* 05 35 17.5936546896 -69 43 18.779973240     14.891 15.03 15.060 ~ 9 0
38 2MASS J05354154-7056130 LP* 05 35 41.5417475376 -70 56 13.145996076     15.881 15.183 14.975 ~ 6 0
39 OGLE LMC-ECL-22253 EB* 05 40 45.2664548448 -68 56 58.638394536     15.806   15.691 ~ 4 0
40 OGLE LMC-DPV-112 EB* 05 40 51.3598693008 -70 01 15.821845284     17.033 17.84 16.792 ~ 7 0
41 2MASS J05451966-7029463 LP* 05 45 19.667 -70 29 46.38     17.54 16.173 15.859 ~ 7 0
42 OGLE LMC-ECL-23999 EB* 05 46 15.4369813248 -69 26 52.233108684     15.796   15.072 ~ 4 0
43 OGLE LMC-ECL-24165 EB* 05 46 59.3996786256 -70 02 41.528756472     15.212   13.924 ~ 4 0
44 OGLE LMC-ECL-25188 EB* 05 52 57.5008529232 -69 29 21.682262220     14.975   13.959 ~ 4 0
45 OGLE LMC-ECL-25664 EB* 06 02 06.9571259808 -71 19 32.988479268     19.101   18.934 ~ 4 0

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2022.12.04-08:31:58

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