J/AJ/142/185 Properties of the eclipsing binary stars HY Vir (Lacy+, 2011)
Absolute properties of the eclipsing binary star HY Virginis.
Lacy C.H.S., Fekel F.C.
<Astron. J., 142, 185 (2011)>
=2011AJ....142..185L 2011AJ....142..185L
ADC_Keywords: Radial velocities ; Binaries, eclipsing ; Photometry, UBV ;
Photometry, CCD
Keywords: binaries: eclipsing - binaries: spectroscopic -
stars: fundamental parameters - stars: individual (HY Vir)
Abstract:
HY Vir is found to be a double-lined F0m+F5 binary star with
relatively shallow (0.3mag) partial eclipses. Previous studies of the
system are improved with 7509 differential photometric observations
from the URSA WebScope and 8862 from the NFO (New Forest Observatory)
WebScope, and 68 high-resolution spectroscopic observations from the
Tennessee State University 2m automatic spectroscopic telescope, and
the 1m coude-feed spectrometer at Kitt Peak National Observatory
(KPNO). Very accurate (better than 0.5%) masses and radii are
determined from analysis of the new light curves and radial velocity
curves. Theoretical models match the absolute properties of the stars
at an age of about 1.35Gy.
Description:
At Fairborn Observatory from 2010 February through 2011 June we
acquired 64 double-lined spectra with the Tennessee State University 2m
Automatic Spectroscopic Telescope (AST).
In 2010 April and June, we obtained four additional double-lined
spectra with the Kitt Peak National Observatory (KPNO) coude-feed
telescope, coude spectrograph, and a TI CCD camera.
One of the telescopes used to obtain the differential photometry is
the URSA WebScope inside a Technical Innovations Robo-Dome. The
observatory is located on top of Kimpel Hall on the Fayetteville
campus. HY Vir was observed by URSA on 56 nights during parts of three
observing seasons from 2009 April 22 to 2011 July 2, yielding 7509
observations. The other telescope we used is the NFO (New Forest
Observatory) WebScope, located near Silver City, New Mexico. HY Vir
was observed by NFO on 135 nights during parts of three observing
seasons from 2009 April 19 to 2011 June 21, yielding 8862
observations.
Objects:
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RA (2000) DE Designation(s) (Period)
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13 08 29.92 -02 40 44.4 HY Vir = HD 114125 (P=2.73233)
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 41 68 Radial velocities of HY Vir
table4.dat 26 7509 URSA Webscope differential photometry of HY Vir
table5.dat 26 8862 NFO (New Forest Observatory) differential
photometry of HY Vir
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See also:
B/gcvs : General Catalogue of Variable Stars (Samus+ 2007-2012)
B/sb9 : 9th Catalogue of Spectroscopic Binary Orbits (Pourbaix+ 2004-2013)
I/259 : The Tycho-2 Catalogue (Hog+ 2000)
III/249 : Stellar radial velocities bibliographic catalog (Malaroda+, 2006)
II/271 : TASS Mark IV patches photometric catalog, version 2 (Droege+, 2007)
J/A+A/446/785 : Catalogue of eclipsing variables (Malkov+, 2006)
J/A+A/467/1215 : Bet Aur light curves (Southworth+, 2007)
J/AcA/54/207 : Ephemerids of eclipsing binaries (Kreiner, 2004)
J/AJ/138/1622 : Absolute properties of LV Her (Torres+, 2009)
J/A+A/546/A61 : Radial velocities for XHIP catalogue (de Bruijne+, 2012)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 9 F9.3 d HJD [55244.8/55738.8] Heliocentric Julian Date;
HJD-2400000
11 A1 --- f_HJD [ab] Flag on observation (1)
13- 17 F5.3 --- Phase [0/1] Orbital Phase
19- 24 F6.1 km/s RV1 [-109.5/83.8] Primary Radial Velocities
26- 29 F4.1 km/s O-C1 [-3.1/2.3] Primary O-C residuals
31- 36 F6.1 km/s RV2 [-137.8/114] Secondary Radial Velocities
38- 41 F4.1 km/s O-C2 [-4.5/3.7] Secondary O-C residuals
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Note (1): Flags as follows:
a = Observation obtained at KPNO.
b = Primary velocity rejected from final spectroscopic solution due to
3σ residual.
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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- 7 F7.5 --- Phase [0/1] Orbital Phase
9- 14 F6.3 mag DVmag [-0.68/-0.322] URSA differential V band magnitude
16- 26 F11.5 d HJD [54943.6/55744.7] Heliocentric Julian Date;
HJD-2400000
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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- 7 F7.5 --- Phase [0/1] Orbital Phase
9- 14 F6.3 mag DVmag [-0.694/-0.343] NFO differential V band magnitude
16- 26 F11.5 d HJD [54940.7/55733.8] Heliocentric Julian Date;
HJD-2400000
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Sylvain Guehenneux [CDS] 20-Mar-2013