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J/AJ/139/1360       AO Ser VR light curves                   (Yang+, 2010)
Photometric properties for selected Algol-type binaries.
II. AO Serpentis and V338 Herculis.
    Yang Y.-G., Hu S.-M., Guo D.-F., Wei J.-Y., Dai H.-F.
   <Astron. J., 139, 1360-1368 (2010)>
   =2010AJ....139.1360Y
ADC_Keywords: Binaries, eclipsing ; Photometry, VRI

Keywords: binaries: close - binaries: eclipsing -
          stars: individual (AO Serpentis and V338 Herculis)

Abstract:
    We present the first multiband photometry for the semidetached
    eclipsing binary AO Serpentis, observed on seven nights between 2009
    April and July at the Weihai Observatory of Shandong University. By
    using the 2003 version of the Wilson-Devinney code, the photometric
    solutions of AO Ser and a similar object V338 Her were (re)deduced.
    The spectral types and orbital periods are A2 and P=0.8793-days for
    AO Ser, F1V and P=1.3057-days for V338 Her.

Description:
    Charge-coupled device (CCD) photometry for the Algol-type eclipsing
    binary AO Ser was carried out from April to July in 2009, using the
    1.0 m Cassegrain telescope at the Weihai Observatory of Shandong
    University in China. A back-illuminated PIXIS CCD camera from the
    Princeton Instruments company was mounted at the Cassegrain focal
    plane of this telescope.

    Photometric observations of AO Ser were obtained on 2009 April 4, 6,
    7, 9, and 10, June 23, and July 1.
Objects:
    ----------------------------------------------------------
       RA   (2000)   DE        Designation(s)
    ----------------------------------------------------------
    15 58 18.41  +17 16 10.0   AO Ser = BD+17 2942
    17 53 12.73  +43 46 23.1   V338 Her = BD+43 2835
    ----------------------------------------------------------

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat        39      750   VR photometric observations of AO Ser
table4.dat        47      132   All available light minimum times of the
                             Algol-type eclipsing binary V338 Herculis
refs.dat          76       62   References


See also:
   J/AJ/137/226 : Differential light curves of TV Tri (Yang+, 2009)


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

   Bytes Format Units   Label     Explanations

   1- 12  F12.4 d       HJD-V     ? V band observation Heliocentric Julian Date
  14- 19  F6.3  mag     DVmag     ? Differential V band magnitude
  21- 32  F12.4 d       HJD-R     R band observation Heliocentric Julian Date
  34- 39  F6.3  mag     DRmag     Differential R band magnitude


Byte-by-byte Description of file: table4.dat

   Bytes Format Units   Label     Explanations

   1- 12  F12.4 d       HJD       Heliocentric Julian Date
  14- 21  F8.1  ---     Epoch     Cycle number
  23- 25  A3    ---     Method    Observational method used: p=plate, vi=visual,
                                  pg=photographic, PE=photoelectric, CCD
  27- 28  A2    ---     Min       Minimum type (I or II)
  30- 36  F7.4  d       O-C       The (O-C) value
  38- 44  F7.4  d       Res       Residuals
  46- 47  I2    ---     Ref       Reference, in refs.dat file


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

   Bytes Format Units   Label     Explanations

   1-  2  I2    ---     Ref       Reference number
   4- 22  A19   ---     BibCode   BibCode
  24- 41  A18   ---     Aut       Author's name
  43- 76  A34   ---     Com       Comments


History:
    From electronic version of the journal

References:
    Yang & Wei,    Paper I,    2009AJ....137..226Y,  Cat. J/AJ/137/226
    Yang et al.,   Paper III,  2012AJ....143...13Y,  Cat. J/AJ/143/13
    Yang et al.,   Paper IV,   2012AJ....144...50Y
    Yang et al.,   Paper V,    2012AJ....144..136Y
(End)                  Greg Schwarz [AAS], Patricia Vannier [CDS]    21-May-2012