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J/MNRAS/470/539     The MOA-II eclipsing binary catalogue            (Li+, 2017)

The first eclipsing binary catalogue from the MOA-II data base. 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., Freeman M., Fukui A., Hirao Y., Itow Y., Ling C.H., Masuda K., Matsubara Y., Muraki Y., Nagakane M., Ohnishi K., Saito T., Sharan A., Sullivan D.J., Suzuki D., Tristram P.J., Yonehara A. <Mon. Not. R. Astron. Soc., 470, 539-550 (2017)> =2017MNRAS.470..539L (SIMBAD/NED BibCode)
ADC_Keywords: Binaries, eclipsing ; Positional data Keywords: methods: data analysis, catalogues - binaries: eclipsing Abstract: We present the first catalogue of eclipsing binaries in two MOA (Microlensing Observations in Astrophysics) fields towards the Galactic bulge, GB9 and GB10, in which over 8000 candidates, mostly contact and semidetached binaries of periods <1d, were identified. In this paper, the light curves of a small number of interesting candidates, including eccentric binaries, binaries with noteworthy phase modulations and eclipsing RS Canum Venaticorum type stars, are shown as examples. In addition, we identified three triple object candidates by detecting the light-travel-time effect in their eclipse time variation curves. Description: Two tables containing information, including periods and positions, on 5253 and 3480 eclipsing binary (EB) candidates in the GB9 and GB10 fields, respectively, are presented. The photometric light curves, with outliers being rejected, of these 8733 EB candidates over two MOA observational season from February 2013 to August 2014 are in subdirectory lc. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 107 3 Doubly EBs in the GB10 field table3.dat 96 40 *Interesting EB candidates table4.dat 142 3 *Orbital elements from the LTTE solutions for three selected EBs in our catalogue ebs_gb3.dat 108 5648 EB candidates in GB3 ebs_gb9.dat 108 5253 EB candidates in GB9 ebs_gb10.dat 108 3480 EB candidates in GB10 lc/* 58 8733 Individual light curves
Note on table3.dat: including eccentric binaries, eclipsing RS CVn type stars, binaries with noteworthy phase modulations as well as binaries with post-main-sequence stellar components, in the GB9 and GB10 fields. Note on table4.dat: with the uncertainties given by 1σ confidence intervals from the medians.
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 20 A20 --- Name MOA Identifier 22- 27 F6.4 d Pa Period of the primary 29- 34 F6.4 --- Hca Conditional entropy of the primary 36- 41 F6.4 --- Thetaa Phase dispersion minimization (PDM) of the primary 43- 48 F6.4 d Pb Period of the secondary 50- 55 F6.4 --- Hcb Conditional entropy of the secondary 57- 62 F6.4 --- Thetab Phase dispersion minimization (PDM) of the secondary 64- 65 I2 h RAh Right ascension (J2000) 67- 68 I2 min RAm Right ascension (J2000) 70- 74 F5.2 s RAs Right ascension (J2000) 76 A1 --- DE- Declination sign (J2000) 77- 78 I2 deg DEd Declination (J2000) 80- 81 I2 arcmin DEm Declination (J2000) 83- 87 F5.2 arcsec DEs Declination (J2000) 89-107 A19 --- OGLE OGLE object within 1 arcsec
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 20 A20 --- Name MOA Identifier 21- 27 F7.4 d P Period 29- 34 F6.4 --- Hc Conditional entropy 36- 41 F6.4 --- Theta Phase dispersion minimization (PDM) 43- 44 I2 h RAh Right ascension (J2000) 46- 47 I2 min RAm Right ascension (J2000) 49- 53 F5.2 s RAs Right ascension (J2000) 55 A1 --- DE- Declination sign (J2000) 56- 57 I2 deg DEd Declination (J2000) 59- 60 I2 arcmin DEm Declination (J2000) 62- 66 F5.2 arcsec DEs Declination (J2000) 68- 75 F8.6 d |Tp-Ts| ?=- Tp-Ts in BJD (1) 77- 95 A19 --- OGLE OGLE object 96 A1 --- n_OGLE [*+] Note on OGLE (2)
Note (1): Tp and Ts are the reference epochs of primary and secondary eclipse minima, respectively, measured by the template method in Section 4.2.2. Note (2): Note as follows: * = within 1 arcsec + = within 2 arcsec
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 20 A20 --- Name MOA Identifier 22- 30 F9.2 10-6d P1 Period of the inner binary determined by CE method plus the correction c1 (1) 32- 35 F4.2 10-6d E_P1 Error on P1 (upper value) 37- 40 F4.2 10-6d e_P1 Error on P1 (lower value) 42- 45 F4.1 10-10d DP1 Change in inner binary orbital period (in d/cycle) (2) 47- 50 F4.1 10-10d E_DP1 Error on DP1 (upper value) (in d/cycle) 52- 55 F4.1 10-10d e_DP1 Error on DP1 (lower value) (in d/cycle) 57- 63 F7.1 10-2d P2 Period of the inner binary determined by CE method 65- 67 F3.1 10-2d E_P2 Error on P2 (upper value) 69- 71 F3.1 10-2d e_P2 Error on P2 (lower value) 73- 76 F4.1 10-2 e2 Eccentricity 78- 80 F3.1 10-2 E_e2 Error on e2 (upper value) 82- 84 F3.1 10-2 e_e2 Error on e2 (lower value) 86- 90 F5.1 deg Omega2 Argument of periastron 92- 95 F4.1 deg E_Omega2 Error on Omega2 (upper value) 97-100 F4.1 deg e_Omega2 Error on Omega2 (lower value) 102-109 F8.2 d tau2 Time of periastron (in MBJD) 111-114 F4.2 d E_tau2 Error on tau2 (upper value) (in MBJD) 116-119 F4.2 d e_tau2 Error on tau2 (lower value) (in MBJD) 121-125 F5.3 au aABsini2 Semi-major axis of AB component 127-131 F5.3 au E_aABsini2 Error on aABsini2 (upper value) 133-137 F5.3 au e_aABsini2 Error on aABsini2 (lower value) 139-142 F4.2 Msun mCmim Minimal mass of the tertiary object (3)
Note (1): period of the inner binary determined by the CE method plus the correction, c1, given by the best fit of equation (8) to the ETV curve, Note (2): DP1=2c2, where c2 is the second-order coefficient in equation (8), is the change in inner binary orbital period per orbital cycle in units of d/cycle Note (3): mAB was taken as 2M when calculating mCmin.
Byte-by-byte Description of file: ebs_gb3.dat ebs_gb10.dat ebs_gb9.dat
Bytes Format Units Label Explanations
1- 20 A20 --- Name MOA Identifier 22- 33 F12.9 d P Period 35- 44 F10.8 --- Hc Conditional entropy 46- 55 F10.8 --- Theta Phase dispersion minimization (PDM) 57- 58 I2 h RAh Right ascension (J2000) 60- 61 I2 min RAm Right Ascension (J2000) 63- 67 F5.2 s RAs Right Ascension (J2000) 69 A1 --- DE- Declination sign (J2000) 70- 71 I2 deg DEd Declination (J2000) 73- 74 I2 arcmin DEm Declination (J2000) 76- 80 F5.2 arcsec DEs Declination (J2000) 82-108 A27 --- FileName Name of the light curve file in subdirectory lc
Byte-by-byte Description of file: lc/*
Bytes Format Units Label Explanations
1- 16 F16.8 d JD Julian date 21- 37 F17.8 --- RFlux Relative flux 43- 58 F16.8 --- e_RFlux rms uncertainty on RFlux
Acknowledgements: Man Cheung Alex Li, mli351(at)aucklanduni.ac.nz
(End) M.C.A. Li [University of Auckland], Patricia Vannier [CDS] 27-Jul-2018
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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