J/AJ/129/2798 AR Mon photometry and radial velocities (Williamon+, 2005)
The eclipsing binary system AR Monocerotis.
Williamon R.M., Van Hamme W., Torres G., Sowell J.R., Ponce V.C.
<Astron. J., 129, 2798-2805 (2005)>
=2005AJ....129.2798W 2005AJ....129.2798W
ADC_Keywords: Binaries, eclipsing ; Binaries, spectroscopic ; Photometry, UBV ;
Stars, variable ; Radial velocities
Keywords: binaries: close - binaries: eclipsing - binaries: spectroscopic -
stars: individual (AR Monocerotis) - stars: variables: other
Abstract:
New differential UBV photoelectric photometry and echelle spectroscopy
for the eclipsing binary AR Mon are presented. A total of 46 radial
velocities for each component are obtained using the TODCOR procedure.
We solve the new and previously published multicolor light curves
simultaneously with the new radial velocities using the latest version
of the Wilson-Devinney program. We confirm that AR Mon is a
semidetached binary consisting of two evolved giant stars and is a
member of the rare class of "cool Algols".
Description:
We carried out differential UBV photometry of AR Mon during
consecutive seasons beginning in 1974 and ending in 1978, plus some
additional observations in the fall of 1979 and spring of 1981. The
observations were acquired with an unrefrigerated EMI 6256s
photomultiplier attached to the 0.9m telescope of the Fernbank Science
Center (Atlanta, GA). AR Mon was observed spectroscopically at the
Harvard-Smithsonian Center for Astrophysics with an echelle
spectrograph mounted at the Cassegrain focus of the 1.5m Wyeth
reflector at the Oak Ridge Observatory (Harvard, MA). A total of 45
spectra were obtained with this setup. One additional exposure was
obtained with an identical instrument on the 1.5m Tillinghast
reflector at the F.L. Whipple Observatory on Mount Hopkins (AZ), for
a total of 46 spectra over a period of 4yr from 1998 November to 2002
November.
Objects:
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RA (2000) DE Designation(s)
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07 20 48.5 -05 15 36 AR Mon = V* AR Mon
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 38 443 New AR Mon photometric observations
table2.dat 27 46 New AR Mon radial velocities
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See also:
V/76 : Chromospherically Active Binaries (Strassmeier+ 1993)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 13 F13.5 d HJD Heliocentric Julian Date
15- 21 F7.4 mag DelV Differential V band magnitude (1)
23- 29 F7.4 mag DelB Differential B band magnitude (1)
31- 37 F7.4 mag DelU Differential U band magnitude (1)
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Note (1): The comparison star was HD 57276 (SAO 134532), and
HD 57432 (SAO 134551) was the check star.
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Byte-by-byte Description of file: table2.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 RV1 Radial velocity of the first component
21- 27 F7.2 km/s RV2 Radial velocity of the second component
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 16-Feb-2006