J/PAZh/26/27 Variability of Cyg X-1 (V1357) in 1995-1996 (Karitskaya+, 2000)
Variability of Cyg X-1 (V1357) in 1995-1996 during the hard and
soft spectral states.
Karitskaya E.A., Goransky V.P., Grankin K.N., Mel'nikov S.Yu.
<Pis'ma Astron. Zh. 26, 27 (2000)>
=2000PAZh...26...27K 2000PAZh...26...27K
=2000AstL...26...22K 2000AstL...26...22K
ADC_Keywords: Binaries, X-ray ; Photometry, UBVRI
Abstract:
Photoelectric UBVR photometry of Cyg X-1 with 1-m Tian'-Shan' and
48-cm Maidanak Observatory reflectors from October 1995 through
November 1996 are presented.
Object:
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RA (2000) DE Designation
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19 58 21.7 +35 12 05.8 Cyg X-1 = V1357 Cyg = HD 226868
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 75 115 Photoelectric observations of Cyg X-1
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See also:
J/AZh/78/408 : Variability of Cyg X-1 (V1357) in 1994-1998 (Karitskaya+, 2001)
Byte-by-byte Description of files: table2.dat
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Bytes Format Units Label Explanations
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1- 11 F11.3 d JDH [2450009/2450416] Heliocentric Julian date
14- 18 F5.3 mag Umag U magnitude
21- 25 F5.3 mag e_Umag Uncertainty in U magnitude
28- 32 F5.3 mag Bmag B magnitude
35- 39 F5.3 mag e_Bmag Uncertainty in B magnitude
42- 46 F5.3 mag Vmag V magnitude
49- 53 F5.3 mag e_Vmag Uncertainty in V magnitude
56- 60 F5.3 mag Rmag ? R magnitude
63- 67 F5.3 mag e_Rmag Uncertainty in R magnitude
70- 71 I2 --- N Number of each night observations
74- 75 A2 --- Obs [m t] Observations of U magnitudes:
m - Mt.Maidanak observatory,
t - Tian'-Shan' observatory
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(End) Veta Avedisova [INASAN] 10-Oct-2000