J/A+A/405/1087 UBV photometry and radial velocities of V497 Cep (Yakut+, 2003)
Basic physical properties of the close binary V497 Cephei in the
open cluster NGC 7160.
Yakut K., Tarasov A.E., Ibanoglu C., Harmanec P., Kalomeni B.,
Holmgren D.E., Bozic H., Eenens P.
<Astron. Astrophys. 405, 1087 (2003)>
=2003A&A...405.1087Y 2003A&A...405.1087Y
ADC_Keywords: Binaries, eclipsing ; Photometry, UBV ; Radial velocities
Keywords: binaries: eclipsing - binaries: spectroscopic -
stars: individual: V497 Cep -
Galaxy: open clusters: individual: NGC 7160
Abstract:
New light and radial-velocity curves of V497 Cep, a binary in the open
cluster NGC 7160, were obtained and the linear ephemeris of the system
was refined to
HJD(Min I)=(2446299.1596±0.0064)+(1.2028287d±0.0000015)dxE.
The first light and radial-velocity curve solutions allowed us to
derive the basic physical properties of this astrophysically important
binary.
Description:
New systematic BV observations of V497 Cep were carried out at Ege
University Observatory. The 0.48-m Cassegrain reflector equipped with
a SSP-5 photometer and Johnson B and V filters was used. The
comparison star already used by Harmanec et al. (1999A&A...346...87H 1999A&A...346...87H),
HD 208440=NGC 7160*3, was used. Its all-sky UBV magnitudes derived by
Harmanec et al. were adopted. V497 Cep was observed on 10 nights
between July 31, 1999 and October 17, 2000.
New electronic spectra of V497 Cep were obtained using two
instruments, the 2.6m telescope and spectrograph of the Crimean
Astrophysical Observatory, and the 1.2m telescope and Coude
spectrograph of the Dominion Astrophysical Observatory.
Objects:
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RA (2000) DE Designation(s)
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21 53 26.55 +62 35 13.2 V497 Cep = HIP 108052
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 30 895 U,B,V photometry of V497 Cep
table2.dat 47 30 Radial velocities of V497 Cep based on
He 6678 line
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See also:
J/MNRAS/331/45 : New periodic variables (Koen+, 2002)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1 I1 --- Filt [1/3] Filters B=1, V=2, U=3
3- 5 I3 --- NData Number of data (1)
7- 18 F12.4 d HJD Julian Date
20- 24 F5.3 --- phase Phase
26- 30 F5.3 mag mag Magnitude
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Note (1): Filters:
1: 1-270(EUO),271-320(DAO),321-353(Hvar),354-365(SPM)
2: 1-290(EUO),291-340(DAO),341-373(Hvar),374-385(SPM),386-435(HIP)
3: 1-50(DAO),51-83(Hvar),84-95(SPM)
All EUO observations data are in deltam (=m(V)-m(C)) format.
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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 I1 --- Obs [1/2] Observatory (1 = CrAO ; 2 = DAO)
3- 14 F12.4 d HJD Julian Date
16- 21 F6.1 km/s RV1D ? RV1 Direct Measurement
23- 28 F6.1 km/s RV2D ? RV2 Direct Measurement
32- 38 F7.2 km/s RV1K RV1 KOREL disentangling
41- 47 F7.2 km/s RV2K RV2 KOREL disentangling
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Acknowledgements: Petr Harmanec
(End) Patricia Bauer [CDS] 27-Jun-2003