J/ApJ/766/3 Limb-darkening coefficients for eclipsing WD* (Gianninas+, 2013)
Limb-darkening coefficients for eclipsing white dwarfs.
Gianninas A., Strickland B.D., Kilic M., Bergeron P.
<Astrophys. J., 766, 3 (2013)>
=2013ApJ...766....3G 2013ApJ...766....3G
ADC_Keywords: Models, atmosphere ; Stars, white dwarf ; Binaries, eclipsing
Keywords: binaries: eclipsing; stars: atmospheres; white dwarfs
Abstract:
We present extensive calculations of linear and nonlinear
limb-darkening coefficients as well as complete intensity profiles
appropriate for modeling the light-curves of eclipsing white dwarfs.
We compute limb-darkening coefficients in the Johnson-Kron-Cousins
UBVRI photometric system as well as the Large Synoptic Survey
Telescope (LSST) ugrizy system using the most up to date model
atmospheres available. In all, we provide the coefficients for seven
different limb-darkening laws. We describe the variations of these
coefficients as a function of the atmospheric parameters, including
the effects of convection at low effective temperatures. Finally, we
discuss the importance of having readily available limb-darkening
coefficients in the context of present and future photometric surveys
like the LSST, Palomar Transient Factory, and the Panoramic Survey
Telescope and Rapid Response System (Pan-STARRS). The LSST, for
example, may find ∼105 eclipsing white dwarfs. The limb-darkening
calculations presented here will be an essential part of the detailed
analysis of all of these systems.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 131 627 Limb-Darkening Coefficients for the LSST g-band
table2.dat 131 627 Limb-Darkening Coefficients for the LSST u-band
table3.dat 131 627 Limb-Darkening Coefficients for the LSST r-band
table4.dat 131 627 Limb-Darkening Coefficients for the LSST i-band
table5.dat 131 627 Limb-Darkening Coefficients for the LSST z-band
table6.dat 131 627 Limb-Darkening Coefficients for the LSST y-band
table7.dat 131 627 Limb-Darkening Coefficients for the
Johnson-Kron-Cousins U-band
table8.dat 131 627 Limb-Darkening Coefficients for the
Johnson-Kron-Cousins B-band
table9.dat 131 627 Limb-Darkening Coefficients for the
Johnson-Kron-Cousins V-band
table10.dat 131 627 Limb-Darkening Coefficients for the
Johnson-Kron-Cousins R-band
table11.dat 131 627 Limb-Darkening Coefficients for the
Johnson-Kron-Cousins I-band
table12.dat 124 6897 Intensity Profiles I(µ)/I(1)
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See also:
II/183 : UBVRI Photometric Standards (Landolt 1992)
J/A+A/556/A86 : FGK dwarf stars limb darkening coefficients (Neilson+, 2013)
J/A+A/510/A21 : Stellar Limb-Darkening Coefficients (Sing, 2010)
J/ApJ/723/1072 : The ELM survey. I. Low-mass white dwarfs (Brown+, 2010)
J/AJ/131/1674 : Close binary systems from SDSS DR4 (Silvestri+, 2006)
J/ApJS/161/394 : Low-luminosity companions to white dwarfs (Farihi+, 2005)
J/A+A/363/1081 : Non-linear limb-darkening law for LTE models (Claret, 2000)
J/A+A/335/647 : Limb-darkening coefficients for ubvyUBVRIJHK (Claret 1998)
J/A+AS/110/329 : LTE model atmospheres coeff. (Diaz-cordoves+, 1995)
J/AJ/106/2096 : Limb-darkening coefficients in binaries (Van Hamme 1993)
Byte-by-byte Description of file: table[1-9].dat table1[01].dat
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Bytes Format Units Label Explanations
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1- 4 F4.2 [cm/s2] log(g) [5/9.5] Log of the surface gravity
6- 10 I5 K Teff [4000/30000] Effective temperature
12- 17 F6.4 --- a Linear "a" coefficient (1)
19- 25 F7.4 --- b Quadratic "b" coefficient (1)
27- 32 F6.4 --- c Quadratic "c" coefficient (1)
34- 40 F7.4 --- d Square-root "d" coefficient (1)
42- 47 F6.4 --- f Square-root "f" coefficient (1)
49- 54 F6.4 --- g Logarithmic "g" coefficient (1)
56- 61 F6.4 --- h Logarithmic "h" coefficient (1)
63- 68 F6.4 --- j Exponential "j" coefficient (1)
70- 76 F7.4 --- k Exponential "k" coefficient (1)
78- 83 F6.4 --- l Sing 3-parameter "l" coefficient (1)
85- 91 F7.4 --- m Sing 3-parameter "m" coefficient (1)
93- 99 F7.4 --- n Sing 3-parameter "n" coefficient (1)
101-107 F7.4 --- p Claret 4-parameter "p" coefficient (1)
109-115 F7.4 --- q Claret 4-parameter "q" coefficient (1)
117-123 F7.4 --- r Claret 4-parameter "r" coefficient (1)
125-131 F7.4 --- s Claret 4-parameter "s" coefficient (1)
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Note (1): fitting coefficients:
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(1) Linear law I(µ)/I(1) = 1-a(1-µ)
(2) Quadratic law I(µ)/I(1) = 1-b(1-µ)-c(1-µ)2
(3) Square root law I(µ)/I(1) = 1-d(1-µ)-f(1-sqrt(µ))
(4) Logarithmic law I(µ)/I(1) = 1-g(1-µ)-hµln(µ)
(5) Exponential law I(µ)/I(1) = 1-j(1-µ)-k/[1-exp(µ)]
(6) Sing law I(µ)/I(1) = 1-l*(1-µ)-m(1-µ3/2)-n(1-µ2)
(7) Claret law I(µ)/I(1) = 1 - p*(1-µ0.5) - q*(1-µ)
- r*(1-µ1.5) - s*(1-µ2)
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(6) see Sing et al. 2009A&A...505..891S 2009A&A...505..891S, which is based on
(7) Claret 2000 (J/A+A/363/1081)
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Byte-by-byte Description of file: table12.dat
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Bytes Format Units Label Explanations
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1 A1 --- Filt Filter (UBVRI or ugrizy)
3- 6 F4.2 cm/s2 log(g) [5/9.5] Log of the surface gravity
8- 12 I5 K Teff [4000/30000] Effective temperature
14- 19 F6.4 --- mu0 [0/1] Intensity profile I(µ=0.0000)/I(µ=1)
21- 26 F6.4 --- mu0.067 [0/1] Intensity profile I(µ=0.0667)/I(µ=1)
28- 33 F6.4 --- mu0.133 [0/1] Intensity profile I(µ=0.1333)/I(µ=1)
35- 40 F6.4 --- mu0.200 [0/1] Intensity profile I(µ=0.2000)/I(µ=1)
42- 47 F6.4 --- mu0.267 [0/1] Intensity profile I(µ=0.2667)/I(µ=1)
49- 54 F6.4 --- mu0.333 [0/1] Intensity profile I(µ=0.3333)/I(µ=1)
56- 61 F6.4 --- mu0.400 [0/1] Intensity profile I(µ=0.4000)/I(µ=1)
63- 68 F6.4 --- mu0.467 [0/1] Intensity profile I(µ=0.4667)/I(µ=1)
70- 75 F6.4 --- mu0.533 [0/1] Intensity profile I(µ=0.5333)/I(µ=1)
77- 82 F6.4 --- mu0.600 [0/1] Intensity profile I(µ=0.6000)/I(µ=1)
84- 89 F6.4 --- mu0.667 [0/1] Intensity profile I(µ=0.6667)/I(µ=1)
91- 96 F6.4 --- mu0.733 [0/1] Intensity profile I(µ=0.7333)/I(µ=1)
98-103 F6.4 --- mu0.800 [0/1] Intensity profile I(µ=0.8000)/I(µ=1)
105-110 F6.4 --- mu0.867 [0/1] Intensity profile I(µ=0.8667)/I(µ=1)
112-117 F6.4 --- mu0.933 [0/1] Intensity profile I(µ=0.9333)/I(µ=1)
119-124 F6.4 --- mu1 [0/1] Intensity profile I(µ=1.0000)/I(µ=1)
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 06-Nov-2014