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 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:
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RA (2000) DE Designation(s)
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07 38.1 +26 24 Ton 2 = Pismis 26 = C 1732-385
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2 33 3651 V, I photometry of Tonantzintla 2
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Byte-by-byte Description of file: table2
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Bytes Format Units Label Explanations
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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
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Acknowledgements: B. Barbuy
(End) Patricia Bauer [CDS] 29-Apr-1996