J/AJ/131/2664 Photometry and radial velocities of EY Cep (Lacy+, 2006)
Absolute properties of the main-sequence eclipsing binary star EY Cephei.
Lacy C.H.S., Torres G., Claret A., Menke J.L.
<Astron. J., 131, 2664-2672 (2006)>
=2006AJ....131.2664L 2006AJ....131.2664L
ADC_Keywords: Stars, double and multiple ; Binaries, orbits
Keywords: binaries: eclipsing - binaries: spectroscopic - stars: evolution -
stars: fundamental parameters - stars: individual (EY Cephei)
Abstract:
We present 6907 differential photometric observations in the V filter,
as well as 52 radial velocities from spectroscopic observations of the
detached, eccentric 7.97day double-lined eclipsing binary star EY Cep.
Description:
EY Cep was observed spectroscopically by C.H.S. Lacy at KPNO beginning
in 1985 January. A variety of gratings and detectors were used with
the 2.1m reflector or coude feed telescope and the coude spectrometer
between then and the last observation in 1989 September. Our
observations of EY Cep at the CfA were collected mostly with the
echelle spectrograph on the 1.5m Tillinghast reflector at the F. L.
Whipple Observatory on Mount Hopkins (Arizona), where the binary star
was monitored from 1995 December 13 to 1999 January 7. Occasionally,
we observed with an identical spectrograph on the MMT (also atop Mount
Hopkins).
Objects:
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RA (2000) DE Designation(s)
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03 40 04.07 +81 01 09.1 EY Cep = V* EY Cep
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 28 6907 Differential magnitudes for EY Cep in V
table4.dat 45 47 CfA radial velocities of EY Cep and residuals
from the final spectroscopic orbit
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 7 F7.5 --- Phase Orbital phase
9- 14 F6.3 mag DVmag Differential V band magnitude
16- 28 F13.5 d HJD Heliocentric Julian Date
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 12 F12.4 d HJD Heliocentric Julian Date
14- 20 F7.2 km/s RVA Radial velocity of component A
22- 27 F6.2 km/s RVB Radial velocity of component B
29- 33 F5.2 km/s (O-C)A Velocity residual for component A
35- 39 F5.2 km/s (O-C)B Velocity residual for component B
41- 45 F5.3 d Phase Orbital phase
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 28-Feb-2008