J/A+AS/110/329 LTE model atmospheres coeff. (Diaz-cordoves+, 1995)
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Linear and non-linear limb-darkening coefficients for LTE model atmospheres
DIAZ-CORDOVES J., CLARET A., GIMENEZ A.
<Astron. Astrophys. Suppl. Ser. 110, 329 (1995)>
=1995A&AS..110..329D (SIMBAD/NED Reference)
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Abstract:
Linear, quadratic and square root limb-darkening coefficients have been
computed by means of least squares fits to model atmospheres by
Kurucz (1991) with the main purpose of facilitating the analysis of
light curves of eclipsing binaries. Results are compared with previously
published values using the same of different models and various fitting
procedures.
Keywords: stars: atmospheres - binaries: eclipsing
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1 63 410 Linear (u) limb-darkening coefficients
table2 62 820 Quadratic (a, b) limb-darkening coefficients
table3 62 819 Square root (c, d) limb-darkening coefficients
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Byte-by-byte Description of file: table1 table2 table3
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Bytes Format Units Label Explanations
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1 A1 --- Coeff Coefficient name (1)
3- 6 F4.2 cm/s+2 logg Surface gravity
9- 13 I5 K Teff Effective temperature
15- 20 F6.3 --- u Limb-darkening coefficient (Stroemgren u)
22- 27 F6.3 --- v Limb-darkening coefficient (Stroemgren v)
29- 34 F6.3 --- b Limb-darkening coefficient (Stroemgren b)
36- 41 F6.3 --- y Limb-darkening coefficient (Stroemgren y)
43- 48 F6.3 --- U Limb-darkening coefficient (Johnson U)
50- 55 F6.3 --- B Limb-darkening coefficient (Johnson B)
57- 62 F6.3 --- V Limb-darkening coefficient (Johnson V)
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Note (1): u for linear, (a, b) for quadratic and (c, d) for square root
limb-darkening coefficients
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Table 4. Coefficients for the approximation to the linear limb-darkening
given by Eq. (7)
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Band a0 a1 a2 a3
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u 12.918 -5.462 0.005 0.591
v 5.863 -1.917 -0.024 0.157
b 8.687 -3.339 -0.015 0.331
y 9.257 -3.729 -0.015 0.388
U 10.068 -4.054 -0.017 0.422
B 6.365 -2.195 -0.023 0.193
V 8.229 -3.217 -0.018 0.326
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Equation (7): u=a0+a1log(Teff)+a2logg+a3(log(Teff))^2^
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References:
Kurucz (1991)
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(End) Patricia Bauer [CDS] 13-Dec-1994