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J/AJ/139/2347       CO And Vr light curves and RV curve      (Lacy+, 2010)
Absolute properties of the eclipsing triple star CO Andromedae:
constraints on convective core overshooting.
    Lacy C.H.S., Torres G., Claret A., Charbonneau D., O'Donovan F.T.,
    Mandushev G.
   <Astron. J., 139, 2347-2359 (2010)>
   =2010AJ....139.2347L
ADC_Keywords: Binaries, eclipsing ; Photometry ; Radial velocities

Keywords: binaries: eclipsing - binaries: spectroscopic -
          stars: fundamental parameters - stars: individual (CO And) -
          stars: rotation - stars: solar-type

Abstract:
    Accurate absolute properties have been determined for the eclipsing
    triple star CO And (F8+F8) based on extensive differential photometry
    obtained by three robotic observatories and CfA spectroscopy. The
    eclipsing binary star orbit is circular with a period of 3.655days.
    The triple nature of this system is revealed by more than a century of
    timings of minimum light, and by the presence of third light in the
    photometric orbits.

Description:
    Our photometric work on CO And began in 2001 and is based on
    observations obtained with three robotic instruments: the URSA
    WebScope at Kimpel Observatory on the campus of the University of
    Arkansas, the NFO WebScope at the NF/Observatory (NFO) near Silver
    City, NM, and the Sleuth telescope in California.

    CO And was observed spectroscopically at the Harvard-Smithsonian
    Center for Astrophysics (CfA) from 2004 January until 2008 December,
    with an echelle spectrograph and a photon-counting Reticon detector on
    the 1.5m Tillinghast reflector at the F. L. Whipple Observatory, on
    Mount Hopkins, Arizona.
Objects:
    -----------------------------------------------
       RA   (2000)   DE        Designation(s)
    -----------------------------------------------
    01 11 24.83  +46 57 49.3   CO And = V* CO And
    -----------------------------------------------

File Summary:

       FileName      Lrecl  Records   Explanations

ReadMe            80        .   This file
table1.dat        30     5941   Differential photometric observations of CO And
                              in V made with the URSA WebScope
table2.dat        30     5025   Differential photometric observations of CO And
                              in V made with the NFO WebScope
table3.dat        30     9289   Differential photometric observations of CO And
                              in Sloan r made with the Sleuth telescope
table5.dat        43       30   Radial velocities of CO And in the
                              heliocentric frame


Byte-by-byte Description of file: table[123].dat

   Bytes Format Units   Label     Explanations

   1-  7  F7.5  ---     Phase     Phase
       9  A1    ---     Band      [Vr] Observed band
  11- 16  F6.3  mag     Dmag      Differential magnitude
  18- 30  F13.5 d       HJD       Heliocentric Julian Date


Byte-by-byte Description of file: table5.dat

   Bytes Format Units   Label     Explanations

   1- 12  F12.4 d       HJD       Heliocentric Julian date
  14- 19  F6.2  km/s    HRVA      Heliocentric radial velocity of A component
  21- 26  F6.2  km/s    HRVB      Heliocentric radial velocity of B component
  28- 31  F4.2  km/s    (O-C)A    Residuals for A component
  33- 36  F4.2  km/s    (O-C)B    Residuals for B component
  38- 43  F6.4  ---     Phase     Phase


History:
    From electronic version of the journal
(End)                  Greg Schwarz [AAS], Patricia Vannier [CDS]    30-May-2012