J/A+A/380/478 BVI photometry in NGC 6101 (Marconi+, 2001)
Mass segregation of different populations inside the cluster NGC 6101.
Marconi G., Andreuzzi G., Pulone L., Cassisi S., Testa V., Buonanno R.
<Astron. Astrophys. 380, 478 (2001)>
=2001A&A...380..478M 2001A&A...380..478M
ADC_Keywords: Clusters, globular ; Photometry, CCD
Keywords: globular clusters: individual (NGC 6101) -
stars: fundamental parameters - Hertzsprung-Russell diagram -
stars: abundances - stars: horizontal branch
Description:
We used HST-WFPC2 and the 1.54 Danish ESO-telescope at La Silla
(Chile) to obtain photometry for stars located within 200 arcsec from
the center of the cluster NGC 6101. HST-WFPC2 data for 1 field
centered on the cluster, have been collected during HST-cycle 6. The
resulting V, V-I photometry reach a limiting magnitude of V∼25.5.
Ground observations have been collected on July 1995. The resulting
photometry containing the stars simultaneously detected in the V, B
and I filters, is characterized by a limiting magnitude of V∼22.5.
Objects:
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RA (2000) DE Designation(s)
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16 25 48.6 -72 12 06 NGC 6101
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
hst.dat 51 12012 HST V, V-I photometry for NGC 6101
ground.dat 66 8413 Ground V, V-I, B-V photometry for NGC 6101
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Byte-by-byte Description of file: hst.dat
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Bytes Format Units Label Explanations
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1- 7 F7.3 pix xpos x coordinate (G1)
9- 15 F7.3 pix ypos y coordinate (G1)
17- 22 F6.3 mag Vmag V magnitude (F555W)
24- 28 F5.3 mag e_Vmag V photometric error
30- 35 F6.3 mag V-I V-I colour index (F555W -F814W)
37- 41 F5.3 mag e_V-I V-I photometric error
43- 51 F9.3 --- ID Identification number (G2)
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Byte-by-byte Description of file: ground.dat
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Bytes Format Units Label Explanations
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1- 8 F8.3 pix xpos x coordinate (G1)
10- 17 F8.3 pix ypos y coordinate (G1)
19- 24 F6.3 mag Vmag V magnitude
26- 30 F5.3 mag e_Vmag V photometric error
32- 37 F6.3 mag V-I V-I colour index
39- 43 F5.3 mag e_V-I V-I photometric error
45- 50 F6.3 mag B-V B-V colour index
52- 56 F5.3 mag e_B-V B-V photometric error
58- 66 F9.3 --- ID Identification number (G2)
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Global notes:
Note (G1): 1 pix = 0.37".
Note (G2): IDs in HST-table have been created also to indicates the camera
in which each object has been identified:
PC: 10000 ≤ ID < 20000
WF2: 20000 ≤ ID < 30000
WF3: 30000 ≤ ID < 40000
WF4: 40000 ≤ ID < 50000
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Acknowledgements: Gloria Andreuzzi
(End) Patricia Bauer [CDS] 12-Dec-2001