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J/A+A/416/811       V and R CCD photometry of visual binaries     (Abad+, 2004)

Reduction of CCD Observations of Visual Binaries, using the "Tepui" Function as PSF. Abad C., Docobo J.A., Lanchares V., Lahulla J.F., Abelleira P., Blanco J., Alvarez C. <Astron. Astrophys. 416, 811 (2004)> =2004A&A...416..811A
ADC_Keywords: Stars, double and multiple ; Photometry, CCD Keywords: stars: general - astrometry - techniques: photometric Abstract: 429 CCD measurements of relative positions and magnitude differences in V and R photometric bands for 165 visual double and multiple stars are given. CCD frames were taken at the 1.52m Spanish telescope of the Spanish-German Center of Astronomy at Calar Alto (Almeria, Spain). During the reduction process a "Tepui" function was used as the PSF function. Description: Table 1 gives relevant data for the visual binaries observed. Observations were carried out over a short period of time, therefore we assign the mean epoch (1998.58) for the totality of data. Data of individual stars are presented as average data with errors, by parameter, when various observations have been calculated, as well as the number of observations involved. Errors corresponding to astrometric relative positions between components are always present. For single observations, parameter fitting errors, specially for dx and dy parameters, have been calculated analysing the chi2 test around the minimum. Following the rules for error propagation, theta and rho errors can be estimated. Then, Table 1 shows single observation errors with an additional significant digit. When a star does not have known references, we include it in Table 2, where J2000 position and magnitudes are from the USNO-A2.0 catalogue (Monet et al., 1998, Cat. I/252). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 80 307 Main catalogue table2.dat 80 18 Supplement catalogue
See also: I/252 : The USNO-A2.0 Catalogue (Monet+ 1998) I/237 : The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996) I/281 : WDS 2001.0 (Mason+ 2001) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 10 A10 --- WDS WDS designation, JHHMMm+DDMM, based on J2000 position (Mason et al., 2001, Cat. I/281) 14- 26 A13 --- Name Binary name, (Mason et al., 2001, Cat. I/281) 30- 34 I5 --- ADS ADS number (Aiken, 1932ADS...C......0A) 38- 42 F5.1 deg theta Position angle 45- 48 F4.2 deg e_theta rms uncertainty on theta 51- 55 F5.2 arcsec rho Separation angle 58- 62 F5.3 arcsec e_rho rms uncertainty on rho 65- 69 F5.2 mag Dmag ? Difference of magnitude of the components in R or V band 72- 75 F4.2 mag e_Dmag ? rms uncertainty on Dmag 78 A1 --- Band [RV] Filter used 80 I1 --- o_Dmag Number of observation
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 2 I2 h RAh Right ascension (J2000) (1) 4- 5 I2 min RAm Right ascension (J2000) (1) 7- 12 F6.3 s RAs Right ascension (J2000) (1) 15 A1 --- DE- Declination sign (J2000) (1) 16- 17 I2 deg DEd Declination (J2000) (1) 19- 20 I2 arcmin DEm Declination (J2000) (1) 22- 26 F5.2 arcsec DEs Declination (J2000) (1) 29- 32 F4.1 mag Rmag ? Magnitude of the A component (1) 38- 42 F5.1 deg theta Position angle 45- 48 F4.2 deg e_theta rms uncertainty on theta 51- 55 F5.2 arcsec rho Separation angle 58- 62 F5.3 arcsec e_rho rms uncertainty on rho 65- 69 F5.2 mag Dmag ? Difference magnitude of the components in R or V band 72- 75 F4.2 mag e_Dmag ? rms uncertainty on Dmag 78 A1 --- Band [RV] Filter used 80 I1 --- o_Dmag Number of observation
Note (1): From USNO-A2.0 (Cat. I/252) catalogue
Acknowledgements: Carlos Abad
(End) Patricia Bauer [CDS] 22-Dec-2003
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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