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J/PASP/117/22          NGC 6318 CCD BVI photometry               (Piatti+, 2005)

A CCD BVI photometric study of the young, highly reddened open cluster NGC 6318. Piatti A.E., Claria J.J., Ahumada A.V. <Publ. Astron. Soc. Pac., 117, 22-31 (2005)> =2005PASP..117...22P
ADC_Keywords: Clusters, open ; Photometry, UBVRI ; Photometry, CCD Abstract: We present CCD BVI photometry for the southern open cluster NGC 6318. The sample consists of 9876 stars measured in an area of 13.6'x13.6', extending down to V∼21.5mag. Star counts carried out within and outside the cluster region allowed us to estimate the cluster angular radius as 8'. Description: CCD images of the cluster field were obtained with the Johnson B and V and Kron-Cousins I filters using the 0.9m telescope at the Cerro Tololo Inter-American Observatory (CTIO; Chile) on 1998 June 17-18. Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 17 17 58.5 -39 26 32 NGC 6318 = IRAS 17145-3923 ---------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 67 9876 CCD BVI data of stars in the field of NGC 6318
Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 4 I4 --- PCA Star name (Cl* NGC 6318 PCA NNNN in Simbad) 6- 13 F8.3 pix Xpos X position (1) 15- 22 F8.3 pix Ypos Y position (1) 24- 29 F6.3 mag Vmag V magnitude 31- 35 F5.3 mag e_Vmag Error in Vmag 37 I1 --- o_Vmag Independent number of observations in V 39- 44 F6.3 mag B-V ?=99.999 B-V color index 46- 50 F5.3 mag e_B-V ?=9.999 Error in B-V 52 I1 --- o_B-V Independent number of observations in B-V 54- 59 F6.3 mag V-Ic ?=99.999 V-Ic color index 61- 65 F5.3 mag e_V-Ic ?=9.999 Error in V-Ic 67 I1 --- o_V-Ic Independent number of observations in V-Ic
Note (1): The coordinates for the cluster center are: (Xc, Yc)=(1060±20, 1330±30) pixels for (RA, DE)=(17 16 11, -39 25 30) (J2000). 1pix=0.4". North is up and East is left.
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 30-Aug-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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