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J/A+A/310/715       Tucana dwarf galaxy VI photometry        (Castellani+, 1996)

The Tucana dwarf Galaxy. Castellani M., Marconi G., Buonanno R. <Astron. Astrophys. 310, 715 (1996)> =1996A&A...310..715C
ADC_Keywords: Galaxies, photometry ; Photometry, CCD Keywords: stars: HR-diagrams - stars: luminosity functions - galaxies: elliptical - galaxies: stellar content - galaxies: Tucana dwarf Abstract: We present deep CCD photometry for the dwarf galaxy in Tucana (l=323, b=-47.4). The data indicate that the galaxy is dominated by an intermediate/old stellar population with metallicity similar to that of the galactic globular clusters NGC 6752 and NGC 7089 (M2) (we find [Fe/H]≃-1.56). The distance modulus we derived, (m-M)V≃24.72±0.2, makes clear that this galaxy belongs to the Local Gro up. Tucana is clearly different from other dwarf galaxies, such as Leo I (Lee et al., 1993AJ....106.1420L), or Phoenix (Ortolani and Gratton, 1988PASP..100.1405O), because there is no evidence of a young stellar population (t≤5Gyrs) We suggest that the Tucana Galaxy is a genuine dwarf spheroidal in which no recent burst of star formation occurred. Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 22 41 49.7 -64 25 10 Tucana dwarf galaxy ---------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file tucana.dat 34 940 Tucana VI photometry
See also: J/A+A/330/453 : Sagittarius Dwarf Galaxy VI photometry (Marconi+, 1998) J/AJ/118/1671 : Fornax cluster 4 VI photometry (Buonanno+, 1999) Byte-by-byte Description of file: tucana.dat
Bytes Format Units Label Explanations
1- 3 I3 --- Seq [1/940] A progressive number 5- 11 F7.2 pix Xpos X coordinate in the frame (1) 13- 19 F7.2 pix Ypos Y coordinate in the frame (1) 21- 27 F7.4 mag Vmag magnitude in the V band 29- 34 F6.4 mag V-I (V-I) color index
Note (1): Field centered on RA = 22 38 27.9, DE = -64 40 53 (B1950) 1 pix = 0.12"-------------------------------------------------------------------------------- History:
History: Copied from Acknowledgements: Marco Castellani
(End) Patricia Bauer [CDS] 07-Nov-2000
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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