J/AJ/110/638 BVI photometry in NGC 1866 (Walker 1995)
The LMC cluster NGC 1866. I. A revised photometric sequence and a
reconnaissance of the surrounding field population
Walker A.R.
<Astron. J. 110, 638 (1995)>
=1995AJ....110..638W 1995AJ....110..638W
ADC_Keywords: Clusters, globular ; Photometry
Abstract:
A photometric sequence consisting of 53 stars measured in the V, B,
and I bands has been set up in the vicinity of the rich, young Large
Magellanic Cloud cluster, NGC 1866. Many of these stars are relatively
isolated and are thus suitable for use as local standard stars for
photometric studies of the cluster. Color magnitude diagrams to a
limit of V=20.5 for various parts of the 13x13arcmin field,
centered on the cluster, show that NGC 1866 is embedded in a mix of
populations which includes stars younger than the cluster itself, the
dominant 0.5-3Gyr population, plus some very old stars represented by
four RR Lyrae variables.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table5.dat 76 6442 Photometry for 6442 stars in a field centered
on NGC 1866
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 5 I5 --- Star Star number
7- 12 F6.1 pix Xpos X coordinate
14- 19 F6.1 pix Ypos Y coordinate
21- 27 F7.3 mag Vmag V magnitude
29- 35 F7.3 mag B-V []?=99.999 B-V color
37- 43 F7.3 mag V-I []?=99.999 V-I color
45- 50 F6.3 mag e_Vmag Error in Vmag
52- 57 F6.3 mag e_B-V []?=9.999 Error in B-V
59- 64 F6.3 mag e_V-I []?=9.999 Error in V-I
66- 68 I3 --- o_Vmag Number of V observations
70- 72 I3 --- o_B-V Number of B observations
74- 76 I3 --- o_V-I Number of I observations
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Origin: AAS CD-ROM series, Volume 5, 1995 Lee Brotzman [ADS] 27-Sep-1995
(End) [CDS] 10-Jan-1996