J/AJ/124/915 VI photometry of NGC 5634 (Bellazzini+, 2002)
The stellar population of NGC 5634:
a globular cluster in the Sagittarius dSph stream?
Bellazzini M., Ferraro F.R., Ibata R.
<Astron. J. 124, 915 (2002)>
=2002AJ....124..915B 2002AJ....124..915B
ADC_Keywords: Clusters, globular ; Photometry, VRI
Keywords: galaxies: individual (Sagittarius dwarf spheroidal) -
globular clusters: individual (NGC 5634)
Abstract:
We present the first (V, V-I) color-magnitude diagram (CMD) for the
poorly studied globular cluster NGC 5634. The CMD shows a steep red
giant branch (RGB) and a predominantly blue horizontal branch (HB):
both these characteristics suggest a low metal content for this
cluster.
The data were obtained at the 3.52 m Italian Telescopio Nazionale
Galileo (Roque de los Muchachos, La Palma, Canary Islands, Spain),
using the LSR DoLoRes Camera equipped with a 2048x2048 pixel thinned
and back-illuminated Loral CCD array.
Objects:
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RA (2000) DE Designation(s)
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14 29 37.3 -05 58 35 NGC 5634
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 56 2162 Photometry of NGC 5634
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 5 I5 --- BFI Object identification number (1)
8- 13 F6.3 mag Vmag The V-band magnitude
16- 20 F5.3 mag e_Vmag The error on Vmag
23- 28 F6.3 mag Imag The I-band magnitude
31- 35 F5.3 mag e_Imag The error on Imag
38- 44 F7.2 pix Xpix The X pixel coordinate (2)
47- 53 F7.2 pix Ypix The Y pixel coordinate (2)
56 I1 --- VNum The RR Lyrae variable number of Baade 1945 (3)
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Note (1): The stars with identification number ID<10000 are from the
FC sample, those with ID≥10000 are from the Field NE catalog.
They are identified as Cl* NGC 5634 BFI NNNNN in Simbad
Note (2): Cluster center (l=342.21, b=+49.26) at (x, y) = (860, 920).
1 pix = 0.275".
Note (3): A zero indicates that the object is not in Baade's
(1945ApJ...102...17B 1945ApJ...102...17B) list of variables.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Bauer [CDS] 12-Sep-2002