J/A+AS/121/451 VI photometry of Berkeley 66 (Guarnieri+ 1997)
VI photometry of the galactic cluster Berkeley 66
Guarnieri M.D., Carraro G.
<Astron. Astrophys. Suppl. Ser. 121, 451 (1997)>
=1997A&AS..121..451G 1997A&AS..121..451G (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, open ; Photometry
Keywords: open clusters: Berkeley 66 - HR diagram
Abstract:
A colour magnitude diagram (CMD) extending to V≃19mag is given for
444 stars in the region of the galactic cluster Berkeley 66. The V and
I photometry of a nearby field is also reported. This object appears
very faint, highly contaminated by foreground stars and very reddened.
The apparent distance modulus (m-M) and the colour excess EV-I are
guessed to be 17.5 and 1.1, respectively, with an uncertainty of at
least 30%. Adopting these values the comparison of the CMD with
theoretical isochrones from the Padova group provides an age around
1.0Gyr.
Objects:
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RA (2000) DE Designation(s)
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03 04.3 +58 46 Berkeley 66 = C 0300+585
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2 42 444 VI photometry
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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- 3 I3 --- ID Identification number
5- 10 F6.3 mag Vmag V magnitude
12- 17 F6.3 mag Imag I magnitude
19- 24 F6.3 mag V-I V-I color index
26- 33 F8.3 pix Xpos X coordinate (1 pix = 0.47")
35- 42 F8.3 pix Ypos Y coordinate (1 pix = 0.47")
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Table1: Journal of observations, 1.05m telescope, Pino Torinese, Torino (Italy)
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Field Filter Exposure Seeing
number (sec) (FWHM)
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November 30, 1994
#1 I 60 1.41
#2 I 300 1.80
#3 I 180 1.35
#4 V 180 1.54
#5 V 120 1.54
#6 V 300 1.67
March 7, 1995
V 300 2.24
I 120 2.19
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Acknowledgements: Giovanni Carraro
(End) Patricia Bauer [CDS] 18-Jun-1996