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J/AJ/108/585        UBVI photometry of NGC 6791              (Montgomery+, 1994)

The reddening and metallicity of NGC 6791. Montgomery K.A., Janes K.A., Phelps R.L. <Astron. J., 108, 585-593 (1994)> =1994AJ....108..585M
ADC_Keywords: Clusters, open ; Photometry, UBVRI ; Photometry, CCD Abstract: We have investigated the reddening and metallicity of NGC 6791 using photoelectric and Charge Coupled Devices (CCD) photometry at the KPNO 0.9m telescope. The reddenings to 31 photoelectrically measured stars in the direction of the cluster were determined individually yielding a mean E(B-V)=0.10±0.02. Broadband UBVI CCD images were taken with a 512x512 CCD and included deep frames on the center, plus a 3x3 mosaic of the cluster. Description: CCD observations were obtained at the KPNO 0.9m telescope using the Tektronix 512x512 CCD camera on 1989 March 28 (UT), and three nights spanning September 27-29 (UT). Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 19 20 53.0 +37 46 18 NGC 6791 = C 1919+377 ---------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 49 31 Photoelectronic photometry table.dat 72 8061 UBVI CCD photometry of NGC 6791
See also: J/A+AS/114/1 : CCD UBVI photometry of NGC 6791 (Kaluzny+, 1995) J/AJ/123/3460 : Low-amplitude variables in NGC 6791 (Mochejska+, 2002) J/MNRAS/243/492 : BV Photometry of NGC 6791. (Kaluzny 1990) J/PASP/115/413 : A star catalog for the open cluster NGC 6791 (Stetson+ 2003) J/AJ/129/656 : Infrared photometry of NGC 6791 (Carney+, 2005) Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 6 A6 --- Name Source name (1) 8- 14 F7.2 pix Xpos ? X coordinate (G1) 16- 22 F7.2 pix Ypos ? Y coordinate (G1) 24- 29 F6.3 mag Vmag V band magnitude 31- 35 F5.3 mag B-V (B-V) color index 37- 42 F6.3 mag U-B (U-B) color index 44- 49 F6.3 mag E(B-V) (B-V) color excess
Note (1): Star numbers preceded with MJP are from this study. The 14 remaining stars are from Harris & Canterna (1981AJ.....86.1332H).
Byte-by-byte Description of file: table.dat
Bytes Format Units Label Explanations
1- 4 I4 --- MJP Source name 6- 12 F7.2 pix Xpos X coordinate (G1) 14- 20 F7.2 pix Ypos Y coordinate (G1) 22- 27 F6.3 mag Vmag V band magnitude 29- 34 F6.3 mag B-V (B-V) color index 36- 41 F6.3 mag U-B ?=99.999 (U-B) color index 43- 48 F6.3 mag V-I ?=99.999 (V-I) color index 50- 54 F5.3 mag e_Vmag Error in Vmag 56- 60 F5.3 mag e_B-V Error in B-V 62- 66 F5.3 mag e_U-B Error in U-B 68- 72 F5.3 mag e_V-I Error in V-I
Global Notes: Note (G1): X and Y coordinates correspond to the map in Fig. 1. North is to the right and East is up. The scale is 0.77"/pixel. NGC 6791 s at B1950=19:19.0+37:45, G070.01+10.96.
History: Copied at WEBDA, http://www.univie.ac.at/webda/archive_ngc.html
(End) Marianne Brouty [CDS] 14-Oct-2005
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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