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J/MNRAS/460/650     Apsidal motions of 90 SMC eccentric binaries   (Hong+, 2016)

Apsidal motions of 90 eccentric binary systems in the Small Magellanic Cloud. Hong K., Lee J.W., Kim S.-L., Koo J.-R., Lee C.-U. <Mon. Not. R. Astron. Soc., 460, 650-663 (2016)> =2016MNRAS.460..650H (SIMBAD/NED BibCode)
ADC_Keywords: Magellanic Clouds ; Binaries, eclipsing ; Photometry, VRI Keywords: binaries: close - binaries: eclipsing - stars: early type - stars: fundamental parameters - Magellanic Clouds Abstract: We examined light curves of 1138 stars brighter than 18.0mag in the I band and less than a mean magnitude error of 0.1mag in the V band from the Optical Gravitational Lensing Experiment (OGLE)-III eclipsing binary catalogue, and found 90 new binary systems exhibiting apsidal motion. In this study, the samples of apsidal motion stars in the Small Magellanic Cloud (SMC) were increased by a factor of about 3.0 than previously known. In order to determine the period of the apsidal motion for the binaries, we analysed in detail both the light curves and eclipse timings using the MACHO (MAssive Compact Halo Objects) and OGLE photometric data base. For the eclipse timing diagrams of the systems, new times of minimum light were derived from the full light curve combined at intervals of one year from the survey data. The new 90 binaries have apsidal motion periods in the range of 12-897yr. An additional short-term oscillation was detected in four systems (OGLE-SMC-ECL-1634, 1947, 3035, and 4946), which most likely arises from the existence of a third body orbiting each eclipsing binary. Since the systems presented here are based on homogeneous data and have been analysed in the same way, they are suitable for further statistical analysis. Description: During the past 20 years, gravitational lensing surveys have obtained photometric observations for thousands of EBs in the SMC. In this paper, we used data from MACHO (1992-1999; Faccioli et al., 2007, Cat. J/AJ/134/1963), OGLE-II (1997-2000; Wyrzykowski et al., 2004, Cat. J/AcA/54/1), and OGLE-III (2001-2009; Pawlak et al. 2013, Cat. J/AcA/63/323). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 108 90 Basic parameters of 90 binary systems table2.dat 145 90 Orbital parameters from the light-curve analyses table3.dat 55 2224 List of eclipse timings for 90 EBs table4.dat 104 90 Apsidal motion elements of 90 EBs tablec1.dat 135 90 Light ratios of the 90 EBs from the light curve analysis tabled1.dat 87 90 Physical parameters of the 90 EBs tablee1.dat 98 100 Apsidal motion elements and masses of the 100 known EBs in the literature refs.dat 68 25 References
See also: J/AJ/134/1963 : MACHO MC eclipsing binaries r,b light curves (Faccioli+, 2007) J/AcA/54/1 : OGLE II SMC eclipsing binaries (Wyrzykowski+, 2004) J/AcA/63/323 : OGLE-III SMC eclipsing binary stars (Pawlak+, 2013) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 13 A13 --- --- [OGLE-SMC-ECL-] 14- 17 I04 --- OGLE-III OGLE-III name (OGLE SMC-ECL-NNNN) 19- 33 A15 --- OGLE-II OGLE-II name (SMC-SCN-NNNNNN) 35- 48 A14 --- MACHO MACHO name (NNN.NNNNN.NNNN) 50- 51 I2 h RAh Right ascension (J2000) 53- 54 I2 min RAm Right ascension (J2000) 56- 60 F5.2 s RAs Right ascension (J2000) 62 A1 --- DE- Declination sign (J2000) 63- 64 I2 deg DEd Declination (J2000) 66- 67 I2 arcmin DEm Declination (J2000) 69- 72 F4.1 arcsec DEs Declination (J2000) 74- 79 F6.3 mag Imag OGLE I magnitude 81- 84 F4.3 mag e_Imag rms uncertainty on Imag 86- 91 F6.3 mag Vmag OGLE V magnitude 93- 96 F4.3 mag e_Vmag rms uncertainty on Vmag 98-103 F6.3 mag V-I V-I colour index 105-108 F4.3 mag e_V-I rms uncertainty on V-I
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 8 A8 --- --- [SMC-ECL-] 9- 12 I04 --- OGLE-III OGLE-III name (OGLE SMC-ECL-NNNN) 14- 18 F5.3 --- T2/T1 Temperature ratio 20- 23 F4.3 --- e_T2/T1 rms uncertainty on T2/T1 25- 29 F5.3 --- e Eccentricity 31- 34 F4.3 --- e_e rms uncertainty on e 36- 38 I3 deg omega Longitude of periastron 40- 41 I2 deg e_omega rms uncertainty on omega 43- 47 F5.2 deg/yr domega/dt Rate of periastron advance 49- 52 F4.2 deg/yr e_domega/dt rms uncertainty on domega/dt 54- 57 F4.2 --- q Mass ratio (M2/M1) 59- 61 F3.2 --- e_q rms uncertainty on q 63- 66 F4.1 deg i Inclination 68- 70 F3.1 deg e_i rms uncertainty on i 72- 76 F5.2 --- Omega1 Dimensionless surface potential of primary 78- 80 F3.2 --- e_Omega1 rms uncertainty on Omega1 82- 86 F5.2 --- Omega2 Dimensionless surface potential of secondary 88- 90 F3.2 --- e_Omega2 rms uncertainty on Omega2 92- 96 F5.3 --- l1I First I-band luminosity ratio (1) 98-101 F4.3 --- e_l1I rms uncertainty on l1I 103-107 F5.3 --- l2I Second I-band luminosity ratio (1) 109-113 F5.3 --- l3I ?=- Third I-band luminosity ratio (1) 115-119 F5.3 --- e_l3I ? rms uncertainty on l3I 121-126 F6.4 --- r1 Mean volume radius of primary 128-132 F5.4 --- e_r1 rms uncertainty on r1 134-139 F6.4 --- r2 Mean volume radius of secondary 141-145 F5.4 --- e_r2 rms uncertainty on r2
Note (1): lx/(l1 + l2 + l3).
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 8 A8 --- --- [SMC-ECL-] 9- 12 I04 --- OGLE-III OGLE name (OGLE SMC-ECL-NNNN) 15- 24 F10.4 d JD Julian date (JD-2400000) 27- 32 F6.4 d e_JD Error on JD 35- 41 F7.1 --- Cycle Cycle 44- 45 A2 --- Min [I II] Type on eclipse 48- 55 A8 --- Source Source (OGLE-II or OGLE-III)
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 8 A8 --- --- [SMC-ECL-] 9- 12 I04 --- OGLE-III OGLE name (OGLE SMC-WCL-NNNN) 14- 22 F9.4 d T0 Zeo epoch T0 (JD-2450000) 24- 28 F5.4 d e_T0 rms uncertainty on T0 30- 37 F8.6 d Ps Sideral period 39- 45 F7.6 d e_Ps rms uncertainty on Ps 47- 54 F8.6 d Pa Anomalistic period 56- 62 F7.6 d e_Pa rms uncertainty on Pa 64- 66 I3 deg omega0 Longitude of periastron 68- 69 I2 deg e_omega0 rms uncertainty on omega0 71- 75 F5.2 deg/yr domega/dt Rate of periastron advance 77- 81 F5.2 deg/yr e_domega/dt rms uncertainty on domega/dt 83- 85 I3 yr Ua Period of apsidal motion determined from the eclipse timing analysis 87- 88 I2 yr e_Ua rms uncertainty on Ua 90- 92 I3 yr Ub Period of apsidal motion determined from the light-curve analysis 94- 96 I3 yr e_Ub rms uncertainty on Ub 98-100 I3 yr Uc Period of apsidal motion, weighted mean from Ua and Ub 102-104 I3 yr e_Uc rms uncertainty on Uc
Byte-by-byte Description of file: tablec1.dat
Bytes Format Units Label Explanations
1- 13 A13 --- --- [OGLE-SMC-ECL-] 14- 17 I04 --- OGLE-III OGLE name (OGLE SMC-ECL-NNNN) 19- 23 F5.3 --- l1-VM ? First MACHO blue (440-590nm) band luminosity ratio (1) 25- 28 F4.3 --- e_l1-VM ? rms uncertainty on l1-VM (2) 30- 34 F5.3 --- l2-VM ? Second MACHO blue (440-590nm) band luminosity ratio 36- 40 F5.3 --- l1-RM ? First MACHO red (590-780nm) band luminosity ratio (1) 42- 45 F4.3 --- e_l1-RM ? rms uncertainty on l1-VM (2) 48- 52 F5.3 --- l2-RM ? Second MACHO red (590-780nm) band luminosity ratio (1) 54- 58 F5.3 --- l1-V First OGLE V-band luminosity ratio (1) 60- 63 F4.3 --- e_l1-V rms uncertainty on l1-V (2) 66- 70 F5.3 --- l2-V Second OGLE V-band luminosity ratio (1) 72- 76 F5.3 --- l1-I First OGLE I-band luminosity ratio (1) 78- 81 F4.3 --- e_l1-I rms uncertainty on l1-IM (2) 84- 88 F5.3 --- l2-I Second OGLE I-band luminosity ratio (1) 90- 94 F5.3 --- l3-VM ? Third MACHO blue (440-590nm) band luminosity ratio (1) 96- 99 F4.3 --- e_l3-VM ? rms uncertainty on l3-VM (2) 102-106 F5.3 --- l3-RM ? Third MACHO red (590-780nm) band luminosity ratio (1) 108-111 F4.3 --- e_l3-RM ? rms uncertainty on l3-RM (2) 114-118 F5.3 --- l3-V ? Third OGLE V-band luminosity ratio (1) 120-123 F4.3 --- e_l3-V ? rms uncertainty on l3-V (2) 126-130 F5.3 --- l3-I ? Third OGLE I-band luminosity ratio (1) 132-135 F4.3 --- e_l3-I ? rms uncertainty on l3-I
Note (1): lx/(l1 + l2 + l3). Note (2): All quoted uncertainties of the photometric solutions were calculated from the differential Corrections subroutine of the WD Code.
Byte-by-byte Description of file: tabled1.dat
Bytes Format Units Label Explanations
1- 8 A8 --- --- [SMC-ECL-] 9- 12 I04 --- OGLE-III OGLE name (OGLE SMC-ECL-NNNN) 14- 17 F4.1 Msun M1 Mass of the primary (1) 19- 21 F3.1 Msun e_M1 rms uncertainty on M1 23- 26 F4.1 Msun M2 Mass of the secondary (1) 28- 30 F3.1 Msun e_M2 rms uncertainty on M2 32- 35 F4.1 Rsun R1 Radius of the primary (1) 37- 39 F3.1 Rsun e_R1 rms uncertainty on R1 41- 43 F3.1 Rsun R2 Radius of the secondary (1) 45- 47 F3.1 Rsun e_R2 rms uncertainty on R2 49- 53 I5 K Teff1 Effective temperature of the primary (1) 55- 58 I4 K e_Teff1 rms uncertainty on Teff1 60- 64 I5 K Teff2 Effective temperature of the secondary (1) 66- 69 I4 K e_Teff2 rms uncertainty on Teff2 71- 75 F5.3 [Lsun] logL1 Luminosity of the primary (1) 77- 81 F5.3 [Lsun] logL2 Luminosity of the secondary (1) 83- 87 F5.3 mag E(V-I) V-I colour excess (1)
Note (1): all parameters were estimated by assuming m-M=19.11 for the SMC stars.
Byte-by-byte Description of file: tablee1.dat
Bytes Format Units Label Explanations
1- 3 I3 --- Seq Sequential number 5- 26 A22 --- Name Star name 27 A1 --- n_Name [abc] Location flag (1) 29- 34 F6.3 d Per Period 37- 44 F8.2 yr U Period of apsidal motion 48- 55 F8.2 yr e_U ? rms uncertainty on U 58- 62 F5.3 --- e Eccentricity 64- 68 F5.3 --- e_e ? rms uncertainty on e 71- 76 F6.3 Msun M1 Mass of the primary 78- 82 F5.3 Msun e_M1 ? rms uncertainty on M1 84- 89 F6.3 Msun M2 Mass of the secondary 91- 95 F5.3 Msun e_M2 ? rms uncertainty on M2 97- 98 I2 --- Ref Reference, in refs.dat file
Note (1): Location flag as follows: a = Located in the LMC b = Located in the SMC c = Located in the M31
Byte-by-byte Description of file: refs.dat
Bytes Format Units Label Explanations
1- 2 I2 --- Ref Reference number 4- 22 A19 --- BibCode BibCode 24- 47 A24 --- Aut Author's name 49- 68 A20 --- Com Comments
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 29-Sep-2017
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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