J/AJ/154/30 Photometric study of fourteen low-mass binaries (Korda+, 2017)
Photometric study of fourteen low-mass binaries.
Korda D., Zasche P., Wolf M., Kucakova H., Honkova K., Vrastil J.
<Astron. J., 154, 30 (2017)>
=2017AJ....154...30K 2017AJ....154...30K (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Binaries, eclipsing ;
Photometry, VRI ; Photometry, infrared ; Stars, masses ;
Stars, diameters ; Effective temperatures
Keywords: binaries: eclipsing - stars: fundamental parameters - stars: low-mass
Abstract:
New CCD photometric observations of fourteen short-period low-mass
eclipsing binaries (LMBs) in the photometric filters I, R, and V were
used for a light curve analysis. A discrepancy remains between
observed radii and those derived from the theoretical modeling for
LMBs, in general. Mass calibration of all observed LMBs was performed
using only the photometric indices. The light curve modeling of these
selected systems was completed, yielding the new derived masses and
radii for both components. We compared these systems with the
compilation of other known double-lined LMB systems with uncertainties
of masses and radii less then 5%, which includes 66 components of
binaries where both spectroscopy and photometry were combined
together. All of our systems are circular short-period binaries, and
for some of them, the photospheric spots were also used. A purely
photometric study of the light curves without spectroscopy seems
unable to achieve high enough precision and accuracy in the masses and
radii to act as meaningful test of the M-R relation for low-mass stars.
Description:
All new photometric observations of 14 binaries were carried out in
the Ondrejov Observatory in the Czech Republic with the 0.65 m
reflecting-type telescope and the G2-3200 CCD camera. Observations were
collected from 2015 February to 2016 November in the I, R, and V filters
(Bessell 1990PASP..102.1181B 1990PASP..102.1181B). Some of the older observations obtained
only in the R filter were used for refining the individual orbital periods.
The stars were primarily chosen from the catalog of Hoffman et al.
(2008, J/AJ/136/1067). For the selection of suitable stars, we used
several criteria. Each binary's classification as a low-mass binary
was performed using the photometric indices J-H and H-K, which are
known from the 2MASS survey (Cutri et al. 2003, Cat. II/246; J-H>0.25
and H-K>0.07 Pecaut & Mamajek (2013, J/ApJS/208/9;
www.pas.rochester.edu/∼emamajek/EEMdwarfUBVIJHKcolorsTeff.txt)).
Furthermore, we selected binary systems that have short orbital periods
(P<1.5 days) and we chose the declination to be higher than +30°.
The last criterion was that these systems cannot have been analyzed in
detail before. We chose 11 systems in Hoffman's catalog (2008,
J/AJ/136/1067), 2 more were found in the measured field (one of them
is on the edge of criteria), and 1 star was added later.
File Summary:
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FileSource Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 95 14 Basic properties of systems from Hoffman et al.
(2008, J/AJ/136/1067) and Cutri et al.
(2003, Cat. II/246) catalogs
table3.dat 100 14 Parameters of binaries (PHOEBE results)
table4.dat 114 14 Absolute parameters of binaries with fixed
values of second order parameters
table6.dat 114 14 Absolute parameters of binaries
table1.dat 56 23213 Photometric observations
table7.dat 62 66 Parameters of double-lined low-mass binary
components for which uncertainties of masses and
radii are less than 5%
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See also:
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
J/A+A/398/239 : RI differential photometry of CU Cnc (Ribas, 2003)
J/AJ/130/2838 : Velocity and light curves of RW Lac (Lacy+, 2005)
J/ApJ/640/1018 : Differential photometry of V1061 Cyg (Torres+, 2006)
J/AJ/136/1067 : New beta Lyrae and Algol candidates in NSVS
(Hoffman+, 2008)
J/ApJ/684/635 : New low-mass eclipsing binary from SDSS-II (Blake+, 2008)
J/ApJ/691/1400 : Absolute properties of CM Dra (Morales+, 2009)
J/ApJ/707/671 : IM Vir BVRI photometry and radial velocities
(Morales+, 2009)
J/other/A+ARV/18.67 : Accurate masses and radii of normal stars (Torres+, 2010)
J/A+A/526/A29 : ASAS low-mass eclipsing binaries light curves
(Helminiak+, 2011)
J/AJ/141/78 : Low-mass eclipsing binaries in KIC (Coughlin+, 2011)
J/AJ/141/166 : HATNet variability survey of K and M dwarfs
(Hartman+, 2011)
J/ApJ/728/48 : Multicolor eclipse data for 6 new binaries (Kraus+, 2011)
J/ApJ/742/123 : Photometry and Velocity of LSPM J1112+7626 (Irwin+, 2011)
J/AJ/145/16 : Differential BVRI light curves of NSVS 02502726
(Lee+, 2013)
J/ApJS/208/9 : Intrinsic colors and temperatures of PMS stars
(Pecaut+, 2013)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 23 A23 --- Source Binary system identifier
25- 26 I2 h RAh Hour of Right Ascension (J2000)
28- 29 I2 min RAm Minute of Right Ascension (J2000)
31- 35 F5.2 s RAs Second of Right Ascension (J2000)
37 A1 --- DE- Sign of the Declination (J2000)
38- 39 I2 deg DEd Degree of Declination (J2000)
41- 42 I2 arcmin DEm Arcminute of Declination (J2000)
44- 48 F5.2 arcsec DEs Arcsecond of Declination (J2000)
50- 54 F5.3 mag J-H [0.248/0.62] 2MASS (J-H) color index
56- 60 F5.3 mag e_J-H [0.025/0.081] Uncertainty in J-H
62- 66 F5.3 mag H-K [0.044/0.256] 2MASS (H-K) color index
68- 72 F5.3 mag e_H-K [0.025/0.081] Uncertainty in H-K
74 A1 --- l_Vmag [~] Limit flag on Vmag
75- 80 F6.3 mag Vmag [11.305/14.45]? Johnson V-band magnitude
82- 86 F5.3 mag e_Vmag [0.016/0.081]? Uncertainty in Vmag
88- 95 F8.6 d Per [0.31422/1.45668]? Orbital period
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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- 23 A23 --- Source Binary system identifier
25- 34 F10.4 d HJD0 Epoch of periastron (HJD-2400000)
36- 41 F6.4 d e_HJD0 Uncertainty in HJD0
43- 51 F9.7 d Per [0.2766/1.45633] Orbital period
53- 57 F5.2 deg Inc [62.91/89.34] Inclination
59- 62 F4.2 deg e_Inc [0.26/0.93] Uncertainty in Inc
64- 68 F5.3 --- Omega1 [3.536/7.047] Surface gravity potential of
the primary Ω1
70- 74 F5.3 --- e_Omega1 [0.029/0.11] Uncertainty in Omega1
76- 80 F5.3 --- Omega2 [3.536/6.466] Surface gravity potential of
the secondary Ω2
82- 86 F5.3 --- e_Omega2 [0.026/0.11] Uncertainty in Omega2
88 A1 --- l_L1 [~] Limit flag on L1
89- 90 I2 % L1 [30/76] Relative luminosity of the primary
92 A1 --- l_L2 [~] Limit flag on L2
93- 94 I2 % L2 [24/50] Relative luminosity of the secondary
96 A1 --- l_L3 [~] Limit flag on L3
97- 98 I2 % L3 [0/38] Relative luminosity of third component
100 A1 --- Spot [Y/N] Presence of a stellar spot?
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Byte-by-byte Description of file: table4.dat table6.dat
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Bytes Format Units Label Explanations
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1- 23 A23 --- Source Binary system identifier
25- 28 F4.2 Msun Mass1 [0.44/1.12] Mass of the primary
30- 33 F4.2 Msun e_Mass1 [0.01/0.18] Lower limit uncertainty in Mass1
35- 38 F4.2 Msun E_Mass1 [0.02/0.18] Upper limit uncertainty in Mass1
40- 43 F4.2 Msun Mass2 [0.42/0.99] Mass of the secondary
45- 48 F4.2 Msun e_Mass2 [0.02/0.17] Lower limit uncertainty in Mass2
50- 53 F4.2 Msun E_Mass2 [0.03/0.16] Upper limit uncertainty in Mass2
55- 58 F4.2 Rsun Rad1 [0.6/1.68] Radius of the primary
60- 63 F4.2 Rsun e_Rad1 [0.03/0.09] Uncertainty in Rad1
65- 68 F4.2 Rsun Rad2 [0.56/1.35] Radius of the secondary
70- 73 F4.2 Rsun e_Rad2 [0.03/0.09] Uncertainty in Rad2
75- 78 F4.2 mag Mbol1 [3.6/8.01] Bolometric magnitude of the primary
80- 83 F4.2 mag e_Mbol1 [0.26/1.2] Uncertainty in Mbol1
85- 88 F4.2 mag Mbol2 [4.44/8.26] Bolometric magnitude of the secondary
90- 93 F4.2 mag e_Mbol2 [0.24/1.4] Uncertainty in Mbol2
95- 98 I4 K T1 [3500/6000] Temperature of the primary
100 A1 --- n_T1 [f] Note on T1 (f=fixed)
102-105 I4 K T2 [3345/5373] Temperature of the secondary
107-112 F6.4 K e_T2 [0.0036/0.0668]? Uncertainty in T2
114 A1 --- n_T2 [f] Note on T2 (f=fixed)
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 23 A23 --- Source Binary system identifier
25 A1 --- Filt [VRI] Filter used in the observation
27- 39 F13.7 d HJD Heliocentric Julian Date (HJD-2400000)
41- 48 F8.5 mag Delmag [-2.404/2.05745] Differential magnitude in Filt
50- 56 F7.5 mag e_Delmag [0.0019/0.70509] Uncertainty in Delmag
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Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 15 A15 --- Source Binary system identifier
17- 18 A2 --- m_Source [A B Ab] Component of the source
20- 26 F7.5 Msun Mass [0.21409/1.0591] Mass
28- 34 F7.5 Msun e_Mass [0.00083/0.033] Uncertainty in Mass
36- 41 F6.4 Rsun Rad [0.2398/1.1562] Radius
43- 48 F6.4 Rsun e_Rad [0.0018/0.03] Uncertainty in Rad
50- 55 F6.3 d Per [0.192/41.032] Orbital period
57- 62 A6 --- Ref Reference(s) (1)
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Note (1): Reference as follows:
1 = Cakinodotrlinodot et al. (2013MNRAS.429...85C 2013MNRAS.429...85C);
2 = Lopez-Morales et al. (2006astro.ph.10225L 2006astro.ph.10225L);
3 = Rozyczka et al. (2009AcA....59..385R 2009AcA....59..385R);
4 = Torres et al. (2010, J/other/A+ARv/18.67);
5 = Lopez-Morales & Ribas (2005ApJ...631.1120L 2005ApJ...631.1120L);
6 = Cakinodotrlinodot et al. (2009NewA...14..496C 2009NewA...14..496C);
7 = Popper (1994AJ....108.1091P 1994AJ....108.1091P);
8 = Kraus et al. (2011, J/ApJ/728/48);
9 = Irwin et al. (2009ApJ...701.1436I 2009ApJ...701.1436I);
10 = Torres & Ribas (2002ApJ...567.1140T 2002ApJ...567.1140T);
11 = Popper (1997AJ....114.1195P 1997AJ....114.1195P);
12 = Rozyczka et al. (2013MNRAS.429.1840R 2013MNRAS.429.1840R);
13 = Morales et al. (2009, J/ApJ/691/1400);
14 = Morales et al. (2009, J/ApJ/707/671);
15 = Lopez-Morales & Shaw (2007ASPC..362...26L 2007ASPC..362...26L);
16 = Feiden & Chaboyer (2012ApJ...757...42F 2012ApJ...757...42F);
17 = Popper et al. (1986AJ.....91..383P 1986AJ.....91..383P);
18 = Torres et al. (2006, J/ApJ/640/1018);
19 = Bayless & Orosz (2006ApJ...651.1155B 2006ApJ...651.1155B);
20 = Ribas (2003, J/A+A/398/239);
21 = Hartman et al. (2011, J/AJ/141/166);
22 = Lacy et al. (2005, J/AJ/130/2838);
23 = Bass et al. (2012ApJ...761..157B 2012ApJ...761..157B);
24 = Irwin et al. (2011, J/ApJ/742/123).
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History:
From electronic version of the journal
(End) Prepared by [AAS], Tiphaine Pouvreau [CDS] 31-May-2018