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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
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),
    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:
    ----------------------------------------------------------
       RA   (2000)   DE       Designation(s)
    ----------------------------------------------------------
    21 53 26.55 +62 35 13.2   V497 Cep = HIP 108052
    ----------------------------------------------------------

File Summary:

       FileName      Lrecl  Records   Explanations

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


See also:
    J/MNRAS/331/45 : New periodic variables (Koen+, 2002)


Byte-by-byte Description of file: table1.dat

   Bytes Format Units   Label     Explanations

       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

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.


Byte-by-byte Description of file: table2.dat

   Bytes Format Units   Label     Explanations

       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


Acknowledgements: Petr Harmanec 

(End)                                          Patricia Bauer [CDS]  27-Jun-2003