J/AJ/146/123 Coefficients in JHKs for the Wilson-Devinney code (Gokay+, 2013)
Multiband photometric and spectroscopic analysis of HV Cnc.
Gokay G., Gurol B., Derman E.
<Astron. J., 146, 123 (2013)>
=2013AJ....146..123G 2013AJ....146..123G
ADC_Keywords: Binaries, eclipsing
Keywords: binaries: eclipsing - stars: individual: HV Cnc -
open clusters and associations: individual: NGC 2682
Abstract:
In this paper, radial velocity and VI- and JHKs (Two Micron All Sky
Survey) band photometric data of the detached system HV Cnc have been
analyzed. The primary component of HV Cnc, which is a member of the
M67 cluster, is suspected to be either a blue straggler or turn-off
star. The system is a single-lined spectroscopic binary and its light
curve shows a total eclipse. Spectroscopic observations of the system
revealed the third component, which shows contribution to the total
light of the system. Light curve and radial velocity data have been
analyzed using the Wilson-Devinney (W-D) code and JHKs filter
definitions computed for the W-D code in this work. Our analysis shows
that the mass and radius of the primary and secondary components are
1.31M☉, 0.52M☉, 1.87R☉, and 0.48R☉,
respectively. All results are compared with previously published
literature values and discussed.
Description:
The open cluster M67 was one of the calibration fields of the Two
Micron All Sky Survey (2MASS). The "Calibration Point Source Working
Database" published by Skrutskie et al. (2006, cat. II/281) contains
simultaneously obtained JHKs-band photometric data of many stars,
including HV Cnc. These data have been obtained by co-adding six
points observed in nearly 1.5 minutes. All the observations were
performed between 1997 November and 2001 January with two 1.3m
robotic telescopes in Arizona and Cerro Tololo (Chile).
Objects:
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RA (ICRS) DE Designation(s) (Period)
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08 51 17.99 +11 45 54.2 HV Cnc = 2MASS J08511799+1145541 (P=10.338126)
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 202 2508 Coefficients of the 10th degree Legendre
polynomial in JHKs filters for Kurucz models
table2.dat 186 15 Coefficients of the 10th degree Legendre
polynomial in JHKs filters for a blackbody model
table3.dat 75 22863 Coefficients of 3 limb darkening laws (linear,
logarithmic, and square root) in JHKs filters
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See also:
II/281 : 2MASS 6X Point Source Working Database / Catalog (Cutri+ 2006)
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
J/AJ/126/2954 : VI light curves of Sand 986 in M67 (Sandquist+, 2003)
J/AJ/106/2096 : Limb-darkening coefficients in binaries (Van Hamme 1993)
J/A+AS/100/243 : Proper motions in M 67 (Zhao+ 1993)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- --- [2MASS]
6- 7 A2 --- Flt 2MASS filter name (J, H, Ks)
9- 11 F3.1 [cm/s2] logg [0/5] Log of the surface gravity
13- 16 F4.1 [Sun] [M/H] [-5/1] Metallicity
18- 22 I5 K T0 [0/35000] Lower limit of temperature range
23- 24 A2 --- --- [.0]
26- 30 I5 K T1 [0/50000] High limit of temperature range
31- 32 A2 --- --- [.0]
34- 49 E16.9 --- c1 The 1st coefficient of Legendre polynomial (1)
51- 66 E16.9 --- c2 The 2nd coefficient of Legendre polynomial (1)
68- 83 E16.9 --- c3 The 3rd coefficient of Legendre polynomial (1)
85-100 E16.9 --- c4 The 4th coefficient of Legendre polynomial (1)
102-117 E16.9 --- c5 The 5th coefficient of Legendre polynomial (1)
119-134 E16.9 --- c6 The 6th coefficient of Legendre polynomial (1)
136-151 E16.9 --- c7 The 7th coefficient of Legendre polynomial (1)
153-168 E16.9 --- c8 The 8th coefficient of Legendre polynomial (1)
170-185 E16.9 --- c9 The 9th coefficient of Legendre polynomial (1)
187-202 E16.9 --- c10 The 10th coefficient of Legendre polynomial (1)
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Note (1): Coefficients are from the 2MASS J band data and are calculated
for particular surface gravity (logg), metallicity ([M/H]) values,
and particular temperature ranges (T0, T1) using Kurucz
(1993IAUCB..21...93K 1993IAUCB..21...93K) atmosphere models.
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- --- [2MASS_]
7- 8 A2 --- Flt 2MASS filter name (J, H, Ks)
10- 14 I5 K T0 [500/99900] Lower limit of temperature range
16- 21 I6 K T1 [2000/500300] High limit of temperature range
23- 38 E16.9 --- c1 The 1st coefficient of Legendre polynomial (1)
40- 54 E15.9 --- c2 The 2nd coefficient of Legendre polynomial (1)
56- 71 E16.9 --- c3 The 3rd coefficient of Legendre polynomial (1)
73- 87 E15.9 --- c4 The 4th coefficient of Legendre polynomial (1)
89-104 E16.9 --- c5 The 5th coefficient of Legendre polynomial (1)
106-120 E15.9 --- c6 The 6th coefficient of Legendre polynomial (1)
122-137 E16.9 --- c7 The 7th coefficient of Legendre polynomial (1)
139-153 E15.9 --- c8 The 8th coefficient of Legendre polynomial (1)
155-170 E16.9 --- c9 The 9th coefficient of Legendre polynomial (1)
172-186 E15.9 --- c10 The 10th coefficient of Legendre polynomial (1)
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Note (1): Coefficients are from the J band data and are calculated for
particular temperature ranges (T0, T1) with the approach of blackbody
radiation.
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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- 5 I5 K Teff [3500/50000] Effective temperature
7- 9 F3.1 [cm/s2] logg [0/5] Log of the surface gravity
11- 14 F4.1 [-] [M/H] [-5/1] Metallicity
16- 20 A5 --- --- [2MASS]
21 A1 --- Flt 2MASS filter name (J, H, K)
23- 27 F5.3 --- u Coefficient of linear law (1)
29- 34 F6.4 --- Qlin [0.02/0.138] Quality factor for linear law
36- 40 F5.3 --- c1 First coefficient of logarithmic law (1)
42- 47 F6.3 --- c2 Second coefficient of logarithmic law (1)
49- 54 F6.4 --- Qlog [0/0.042] Quality factor of logarithmic law
56- 61 F6.3 --- r1 First coefficient of square root law (1)
63- 68 F6.3 --- r2 Second coefficient of square root law (1)
70- 75 F6.4 --- Qsqrt [0/0.028] Quality factor for square root law
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Note (1): Coefficients are from the 2MASS J band data and are calculated
for particular effective temperature (Teff), surface gravity (logg)
and metallicity ([M/H]) together with quality factors.
Limb-darkening laws:
(linear) I(µ)/I(1) = 1-u(1-µ)
(logarithmic) I(µ)/I(1) = 1-c1(1-µ)-c2µln(µ)
(square root) I(µ)/I(1) = 1-r1(1-µ)-r2(1-sqr(µ))
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Sylvain Guehenneux [CDS] 17-Jul-2014