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J/ApJ/562/303         Old Stellar Populations of the SMC         (Dolphin+ 2001)

Old Stellar Populations of the Small Magellanic Cloud Dolphin A.E., Walker A.R., Hodge P.W., Mateo M., Olszewski E.W., Schommer R.A., Suntzeff N.B. <Astrophys. J. 562, 303 (2001)> =2001ApJ...562..303D
ADC_Keywords: Magellanic Clouds ; Populations, stellar Mission_Name: HST Description: Photometry is given for six data sets of SMC photometry, all in the V and I bands. Field names in the file summary below are the names used in the STScI archive for the WFPC2 observations. WFPC2 observations of NGC 121 and the SMC fields reach limiting magnitudes of V=26 and I=25.5; ground-based observations cover a square region of 14.5 arcmin on a side and reach V=25.5 and I=24.5. Objects: ----------------------------------------- RA (2000) DE Designation(s) ----------------------------------------- 00 26 42 -71 31 00 NGC 121 field 00 46 00 -70 35 00 SMC Field 1 00 49 00 -70 48 00 SMC Field 2 00 46 12 -70 47 00 SMC Field 3 00 49 00 -70 33 00 SMC Field 4 ----------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file field1.dat 41 952 SMC-004600-703500 photometry field2.dat 41 1180 SMC-004900-704800 photometry field3.dat 41 1039 SMC-004612-704700 photometry field4.dat 41 970 SMC-004900-703300 photometry ground.dat 41 16110 Ground-based photometry ngc121.dat 41 16710 NGC121 photometry
Byte-by-byte Description of file: field1.dat field2.dat field3.dat field4.dat Byte-by-byte Description of file: ngc121.dat
Bytes Format Units Label Explanations
1 A1 --- Chip WFPC2 chip number; 1=PC1, 2=WFC2, etc. 3- 8 F6.2 pix X *X position 10- 15 F6.2 pix Y *Y position 17- 22 F6.3 mag Vmag V magnitude in HST F555W filter 24- 28 F5.3 mag e_Vmag V uncertainty 30- 35 F6.3 mag Imag I magnitude in HST F814W filter 37- 41 F5.3 mag e_Imag I uncertainty
Note on X and Y: Positions are given in the HSTphot system; (0.5,0.5) refers to the center of the lower-left pixel.
Byte-by-byte Description of file: ground.dat
Bytes Format Units Label Explanations
1- 7 F7.2 pix X *X position 9- 15 F7.2 pix Y *Y position 17- 22 F6.3 mag Vmag V magnitude 24- 29 F6.3 mag V-I V-I color 31- 35 F5.3 mag e_Vmag V uncertainty 37- 41 F5.3 mag e_V-I V-I uncertainty
Note on X and Y: Positions are given in the DAOPHOT system; (1.0,1.0) refers to the center of the lower-left pixel.

(End) Andrew Dolphin [NOAO] 10-Dec-2001
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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