J/PASP/106/967 Photometric Standard Stars (Joergensen 1994)
Secondary Photometric Standard Stars for the Thuan-Gunn and Johnson-Kron-Cousins Systems. Joergensen Inger <Publ. Astron. Soc. Pac., 106, 967 (1994)> =1994PASP..106..967J
ADC_Keywords: Photometry, standards ; Photometry, special systems ; Photometry, UBV 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:
FileName Lrecl Records Explanations
ReadMe 80 . This file table6.dat 133 127 Standard magnitudes
Byte-by-byte Description of file: table6.dat
Bytes Format Units Label Explanations
1- 13 A13 --- Name *Name of star 15- 20 F6.3 mag Vmag ?Magnitude in Johnson V 23- 27 F5.3 mag e_Vmag ?Mean error on magnitude in Johnson V 31- 33 I3 --- o_Vmag ?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
Notes on Name: E4, E5, E6, E7, E8, E9: Johnson standard stars from Graham (1982PASP...94..244G) N300: Johnson standard stars from Graham (1981PASP...93...29G) 1MarkA, PG1633+099, SA92, SA110: Johnson standard stars from Landolt (1992AJ....104..340L) F762-9, F1038-6: Stobie et al. (1985A&AS...60..503S), not used for the standard calibration. F762-9-2 is variable. BD, Feige, GL745, G18-39, G68-30, HD84937, M67, and Ross: Kent (1985PASP...97..165K). Other HD and SA: Zinn (1980ApJS...42...19Z), 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.
(End) Nancy G. Roman [ADC/SDDOO] 16-Mar-1995
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