J/A+A/472/1055 CCD astrometry of visual double stars (Sinachopoulos+ 2007)
CCD astrometry and components instrumental magnitude difference of 432
Hipparcos wide visual double stars.
Sinachopoulos D., Gavras P., Dionatos O., Ducourant C., Medupe T.
<Astron. Astrophys. 472, 1055 (2007)>
=2007A&A...472.1055S 2007A&A...472.1055S
ADC_Keywords: Stars, double and multiple ; Positional data ; Photometry, CCD
Keywords: stars: binaries - astrometry
Abstract:
We measured the angular separations, position angles, Delta(V),
Delta(y) and Delta(I) of wide visual double stars during the
period 2003-2005. At least one component of the double stars in our
sample has an entry in the Hipparcos catalogue.
Description:
Results were obtained for angular separation, position angle,
Delta(V) and partially Delta(I) photometry for 213 northern HIPPARCOS
wide visual double stars and 219 southern. In the Southern Hemisphere
y filter was used instead of V and I. Our data were gathered using the
1.2m telescope of the Kryonerion observatory and the 1.0m SAAO
telescope.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 81 213 CCD measurements of visual binaries in V filter
for the north hemisphere
table2.dat 81 55 CCD measurements of visual binaries in I filter
for the north hemisphere
table3.dat 81 219 CCD measurements of visual binaries in y filter
for south hemisphere
--------------------------------------------------------------------------------
See also:
I/237 : The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)
I/260 : Visual Double Stars in Hipparcos (Dommanget+, 2000)
J/A+AS/139/425 : CCD photometry and astrometry of double stars (Cuypers+, 1999)
J/A+A/374/132 : CCD photometry and astrometry of double stars (Lampens+, 2001)
Byte-by-byte Description of file: table1.dat table2.dat table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 h RAh Right Ascension (hours) (J2000)
4- 5 I2 min RAm Right Ascension (minutes) (J2000)
7- 10 F4.1 s RAs Right Ascension (seconds) (J2000)
12 A1 --- DE- Declination (sign) (J2000)
13- 14 I2 deg DEd Declination (degrees) (J2000)
16- 17 I2 arcmin DEm Declination (minutes) (J2000)
19- 20 I2 arcsec DEs Declination (seconds) (J2000)
22- 31 A10 --- WDS Name from Washington Double Star (Cat. I/237)
32- 33 A2 --- m_WDS Component(s) designation
35- 40 F6.3 arcsec rho Angular Separation
42- 46 F5.3 arcsec e_rho Error of angular separation
48- 53 F6.2 deg theta Position angle of components
55- 58 F4.2 deg e_theta Error of position angle
60- 64 F5.3 mag Dmag ? Difference in the magnitude of components
66- 70 F5.3 mag e_Dmag ? Error of difference in the magnitude
72- 78 F7.2 yr Epoch Epoch of observations
80- 81 I2 --- Exp Number of exposures
--------------------------------------------------------------------------------
Acknowledgements:
Based on observations made at Kryonerion Observatory , Greece.
D. Sinachopoulos and P. Gavras would like to thank the Greek
Secretary of Research and Technology for its support in the
frame of the ATHENOGAIA project.
D. Sinachopoulos thanks the South African University of North West for
its invitation and support of the present project in September 2004.
Panos Gavras, pgavras(at)astro.noa.gr
(End) P. Gavras [UOA-NOA] 16-Apr-2007