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 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:
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FileName Lrecl Records Explanations
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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
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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
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Bytes Format Units Label Explanations
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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
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Byte-by-byte Description of file: table2.dat
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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
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Note (1): lx/(l1 + l2 + l3).
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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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)
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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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
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Byte-by-byte Description of file: tablec1.dat
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Bytes Format Units Label Explanations
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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
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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.
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Byte-by-byte Description of file: tabled1.dat
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Bytes Format Units Label Explanations
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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)
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Note (1): all parameters were estimated by assuming m-M=19.11 for the SMC stars.
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Byte-by-byte Description of file: tablee1.dat
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Bytes Format Units Label Explanations
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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
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Note (1): Location flag as follows:
a = Located in the LMC
b = Located in the SMC
c = Located in the M31
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Ref Reference number
4- 22 A19 --- BibCode BibCode
24- 47 A24 --- Aut Author's name
49- 68 A20 --- Com Comments
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 29-Sep-2017