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J/PASP/106/967 Standards: Thuan-Gunn; Johnson-Kron-Cousins (Joergensen 1994)
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Secondary Photometric Standard Stars for the Thuan-Gunn and Johnson-
Kron-Cousins Systems.
Joergensen I.
<Publ. Astron. Soc. Pac. 106, 967 (1994)>
=1994PASP..106..967J
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ADC_Keywords: Photometry, standards; Photometry, special systems;
Photometry, Cousins
Abstract:
CCD photometry is presented for 119 stars observed in the Thuan-Gunn
photometric system (the passbands vgr). The sample includes 82 stars
for which magnitudes in this system have not previously been
published. Photometry in the Johnson-Kron-Cousins photometric system
(BV or UBV) has been obtained for a sub-sample of 85 of the stars.
Of those stars which are not primary standard stars for the Thuan-Gunn
system 70 observed in Gunn r, 48 observed in Gunn g, and 37 observed
in Gunn v have sufficient repeat measurements that they may be used as
secondary standard stars for CCD photometry. The typical uncertain-
ties for the magnitudes of these stars are 0.006 mag.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table6.dat 133 127 Standard magnitudes
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 13 A13 --- Name *Name of star
15- 20 F6.3 mag V ?Magnitude in Johnson V
23- 27 F5.3 mag e_V ?Mean error on magnitude in Johnson V
31- 33 I3 --- o_V ?Number of observations in Johnson V
35- 40 F6.3 mag B-V ?B-V, Johnson system
43- 47 F5.3 mag e_B-V ?Mean error on B-V
51- 53 I3 --- o_B-V ?Number of observations for B-V
55- 60 F6.3 mag U-B ?U-B, Johnson system
63- 67 F5.3 mag e_U-B ?Mean error on U-B
71- 73 I3 --- o_U-B ?Number of observations for U-B
75- 80 F6.3 mag r ?Magnitude in Gunn r
83- 87 F5.3 mag e_r ?Mean error on magnitude in Gunn r
91- 93 I3 --- o_r ?Number of observations in Gunn r
95-100 F6.3 mag g ?Magnitude in Gunn g
103-107 F5.3 mag e_g ?Mean error on magnitude in Gunn g
111-113 I3 --- o_g ?Number of observations in Gunn g
115-120 F6.3 mag v ?Magnitude in Gunn v
123-127 F5.3 mag e_v ?Mean error on magnitude in Gunn v
131-133 I3 --- o_v ?Number of observations in Gunn v
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Note on Name:
E4, E5, E6, E7, E8, E9: Johnson standard stars from Graham (1982, PASP,
94, 244).
N300: Johnson standard stars from Graham (1981, PASP, 93, 29).
1MarkA, PG1633+099, SA92, SA110: Johnson standard stars from Landolt
(1992, AJ, 104, 340).
F762-9, F1038-6: Stobie et al. (1985, A&AS, 60, 503), not used for the
standard calibration. F762-9-2 is variable.
BD, Feige, GL745, G18-39, G68-30, HD84937, M67, and Ross: Kent (1985,
PASP, 97, 165). Other HD and SA: Zinn (1980, ApJS, 42, 19), not used
for the standard calibration.
Acknowledgement:
This document was prepared by I. Joergensen whom we thank for both the
document and the data. It was modified slightly by the undersigned.
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(End) Nancy G. Roman [ADC/SSDOO] 16-Mar-1995