J/AJ/131/1184 A recalibration of optical photometry (Maiz-Apellaniz+, 2006)
A recalibration of optical photometry: Tycho-2, Stromgren, and Johnson systems.
Maiz-Apellaniz J.
<Astron. J., 131, 1184-1199 (2006)>
=2006AJ....131.1184M 2006AJ....131.1184M
ADC_Keywords: Photometry, sensitivity functions ; Photometry, UBV ;
Photometry, uvby
Keywords: space vehicles: instruments - stars: fundamental parameters -
techniques: photometric - techniques: spectroscopic
Abstract:
I use high-quality Hubble Space Telescope (HST) spectrophotometry to
analyze the calibration of three popular optical photometry systems:
Tycho-2 BT and VT, Stromgren uvby, and Johnson UBV.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 21 42 Recommended photon-counting sensitivity curves
for the Tycho BTVT system
table2.dat 43 29 Recommended photon-counting sensitivity curves
for the Stromgren uvby standard system
table3.dat 32 47 Recommended photon-counting sensitivity curves
for the Johnson UBV standard system
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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- 4 I4 0.1nm BTlambda ? Tycho BT filter wavelength in Angstroms
6- 10 F5.3 --- BTph ? Tycho BT filter sensitivity
12- 15 I4 0.1nm VTlambda Tycho VT filter wavelength in Angstroms
17- 21 F5.3 --- VTph Tycho VT filter sensitivity
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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- 4 I4 0.1nm ulambda ? Stromgren u filter wavelength in Angstroms
6- 10 F5.3 --- uph ? Stromgren u filter sensitivity
12- 15 I4 0.1nm vlambda Stromgren v filter wavelength in Angstroms
17- 21 F5.3 --- vph Stromgren v filter sensitivity
23- 26 I4 0.1nm blambda Stromgren b filter wavelength in Angstroms
28- 32 F5.3 --- bph Stromgren b filter sensitivity
34- 37 I4 0.1nm ylambda Stromgren y filter wavelength in Angstroms
39- 43 F5.3 --- yph Stromgren y filter sensitivity
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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- 4 I4 0.1nm Ulambda ? Johnson U filter wavelength in Angstroms
6- 10 F5.3 --- Uph ? Johnson U filter sensitivity
12- 15 I4 0.1nm Blambda ? Johnson B filter wavelength in Angstroms
17- 21 F5.3 --- Bph ? Johnson B filter sensitivity
23- 26 I4 0.1nm Vlambda Johnson V filter wavelength in Angstroms
28- 32 F5.3 --- Vph Johnson V filter sensitivity
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History:
From electronic version of the journal
References:
Maiz-Apellaniz J., Paper I 2005PASP..117..615M 2005PASP..117..615M
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 09-Jan-2007