J/AJ/117/286 Photometry of variable stars in NGC 7006 (Wehlau+, 1999)
Two-color CCD photometry of variable stars in NGC 7006
Wehlau A., Slawson R. W., Nemec J. M.
<Astron. J. 117, 286 (1999)>
=1999AJ....117..286W 1999AJ....117..286W
ADC_Keywords: Clusters, globular ; Stars, variable
Keywords: globular clusters: individual (NGC 7006) - RR Lyrae variable
Abstract:
B and V CCD photometry from 1984 through 1994 is presented for 50
RR Lyrae stars and two red variable stars in the globular cluster
NGC 7006. New determinations of pulsation periods and period change
rates are given and used to plot B light curves. The new photometry is
combined with previously published photometry obtained from
photographic plates taken in the 1930s, the 1950s and 1984 and used to
derive O - C diagrams and new period change rates. V light curves
based on the CCD data are also displayed, and colors derived from mean
values of B and V are given. Period-amplitude diagrams and the
color-magnitude diagram for the variables are shown.
Objects:
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RA (2000) DE Designation(s)
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21 01 29.4 +16 11 14 NGC 7006 = C 2059+160
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 94 117 B CCD magnitudes for variables in NGC 7006
table3.dat 94 106 V CCD magnitudes for variables in NGC 7006
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 11 F11.3 d JD Julian date
17- 21 F5.2 mag V1Bmag ? B magnitude for star V1
25- 29 F5.2 mag V2Bmag ? B magnitude for star V2
33- 37 F5.2 mag V3Bmag ? B magnitude for star V3
41- 45 F5.2 mag V5Bmag ? B magnitude for star V5
49- 53 F5.2 mag V6Bmag ? B magnitude for star V6
57- 61 F5.2 mag V8Bmag ? B magnitude for star V8
65- 69 F5.2 mag V10Bmag ? B magnitude for star V10
73- 77 F5.2 mag V11Bmag ? B magnitude for star V11
81- 85 F5.2 mag V12Bmag ? B magnitude for star V12
89- 93 F5.2 mag V13Bmag ? B magnitude for star V13
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 11 F11.3 d JD Julian date
17- 21 F5.2 mag V1Vmag ? V magnitude for star V1
25- 29 F5.2 mag V2Vmag ? V magnitude for star V2
33- 37 F5.2 mag V3Vmag ? V magnitude for star V3
41- 45 F5.2 mag V5Vmag ? V magnitude for star V5
49- 53 F5.2 mag V6Vmag ? V magnitude for star V6
57- 61 F5.2 mag V8Vmag ? V magnitude for star V8
65- 69 F5.2 mag V10Vmag ? V magnitude for star V10
73- 77 F5.2 mag V11Vmag ? V magnitude for star V11
81- 85 F5.2 mag V12Vmag ? V magnitude for star V12
89- 93 F5.2 mag V13Vmag ? V magnitude for star V13
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History:
From AJ electronic edition
(End) Greg Schwarz [AAS] 06-Apr-2000