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J/A+AS/120/153      VI photometry of Ton 2 cluster (Bica+, 1996)

NTT V, I Colour-Magnitude Diagrams of the bulge globular cluster Tonantzintla 2 Bica E., Ortolani S., Barbuy B. <Astron. Astrophys. Suppl. Ser. 120, 153 (1996)> =1996A&AS..120..153B (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, globular ; Photometry Keywords: globular clusters: individual: Ton 2 - HR diagram Description: Ton 2 is among the less-known Galactic globular clusters. We present for the first time colour magnitude diagrams in the V, I bands. We used the ESO NTT telescope under an excellent seeing of 0.6". The horizontal branch is red and close to the red giant branch, tilted by some differential reddening. The horizontal branch morphology and the red giant branch curvature suggest a metallicity similar to that of 47 Tucanae. We derive a reddening of E(B-V)=1.26 and a distance d=6.4kpc. Therefore, Ton 2 is ≃2.0kpc from the Galactic center, and it appears to belong to the bulge population, being however only moderately metal rich. Objects: -------------------------------------------------- RA (2000) DE Designation(s) -------------------------------------------------- 07 38.1 +26 24 Ton 2 = Pismis 26 = C 1732-385 -------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2 33 3651 V, I photometry of Tonantzintla 2
Byte-by-byte Description of file: table2
Bytes Format Units Label Explanations
1- 4 I4 --- No [1/3651] Sequence number 6- 12 F7.2 pix Xpos X pixel coordinate as in Fig. 1 14- 20 F7.2 pix Ypos Y pixel coordinate as in Fig. 1 22- 27 F6.3 mag Vmag V magnitude 29- 33 F5.3 mag V-I V-I color index
Acknowledgements: B. Barbuy
(End) Patricia Bauer [CDS] 29-Apr-1996
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