J/AZh/79/1087 UBV photometry of X-ray binary HZ Her (Sheffer+, 2002)
Optical features of the accretion disk in the HZ Her/Her X-1 system during
the anomalous low state in 1999.
Sheffer E.K., Voloshina I.B., Goransky V.P., Lyuty V.M.
<Astron. Zh., 79, 1087 (2002)>
=2002AZh....79.1087S 2002AZh....79.1087S
=2002ARep...46..981S 2002ARep...46..981S
ADC_Keywords: Binaries, X-ray; Photometry
Abstract:
We present UBV photoelectric and CCD observations of HZ Her/Her X-1
system near its primary minimum in 1999, when the object was in
anomalous low X-ray state, together with UBV observations accumulated
since 1988.
Description:
We began our observations in April 1999 with the CCD photometer of the
Sternberg Astronomical Institute's Crimean Laboratory, at the
Newtonian focus of the 125cm telescope (relative aperture 1/4). In
July, we continued observations with the CCD photometer in the B and V
bands using the 60cm telescope. In August, we used the 60cm
telescope with the UBV photometer and an EMI 9789 photomultiplier as a
detector.
Objects:
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RA (2000) DE Designation(s)
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16 57 49.83 +35 20 32.6 HZ Her = 1RXS J165749.6+352022 = AN 142.1936
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 56 112 1999 observations of HZ Her near the primary minimum
table2.dat 32 239 UBV observations of HZ Her after 1988
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See also:
J/A+A/342/736 : Pre-eclipse dip of Her X-1 (Stelzer+ 1999)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 12 F12.4 d JD [2451282/2451407] Julian date
15- 20 F6.4 --- Phase Orbital phase (Period=1.7day)
23- 27 F5.3 --- psi35 Phase of 35-day cycle
30- 35 F6.3 mag Vmag ? V magnitude
38- 43 F6.3 mag Bmag B magnitude
46- 51 F6.3 mag Umag ? U magnitude
54- 56 A3 --- Rem [Phe CCD] Instrument used:
Phe: UBV photometer
CCD: CCD photometer
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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 [2447386/2451489] Julian date
14- 18 F5.2 mag Vmag V magnitude
21- 25 F5.2 mag Bmag B magnitude
28- 32 F5.2 mag Umag U magnitude
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(End) Veta Avedisova (INASAN) 01-Apr-2003