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 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:
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RA (2000) DE Designation(s)
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01 11 24.83 +46 57 49.3 CO And = V* CO And
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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 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
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Byte-by-byte Description of file: table[123].dat
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Bytes Format Units Label Explanations
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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
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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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
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 30-May-2012