J/AJ/145/80 Light curves of HS Aqr, EG Cep, VW LMi, DU Boo (Djurasevic+, 2013)
Photometric analysis of HS Aqr, EG Cep, VW LMi, and DU Boo.
Djurasevic G., Basturk O., Latkovic O., Yilmaz M., Caliskan S.,
Tanriverdi T., Senavci H.V., Kilicoglu T., Ekmekci F.
<Astron. J., 145, 80 (2013)>
=2013AJ....145...80D 2013AJ....145...80D
ADC_Keywords: Binaries, eclipsing ; Photometry, UBVRI
Keywords: binaries: eclipsing - binaries: spectroscopic -
stars: individual (HS Aquarii,EG Cephei,VW Leonis Minoris,DU Bootis)
Abstract:
We analyze new multicolor light curves for four close late-type
binaries: HS Aqr, EG Cep, VW LMi, and DU Boo, in order to determine
the orbital and physical parameters of the systems and estimate the
distances. The analysis is done using the modeling code of G.
Djurasevic, and is based on up-to-date measurements of spectroscopic
elements. All four systems have complex, asymmetric light curves that
we model by including bright or dark spots on one or both components.
Our findings indicate that HS Aqr and EG Cep are in semi-detached,
while VW LMi and DU Boo are in overcontact configurations.
Description:
The photometric data were obtained with the Apogee ALTA U47 CCD camera
attached to the 40cm Schmidt-Cassegrain telescope located at the
Ankara University Observatory, using BVRC filters in close
accordance with the Johnson-Cousins standard system. The observations
were done during the summer season of 2007 (for DU Boo) and 2008 (for
the other three stars).
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 80 4 Summary of observational aspects
table3.dat 40 12411 BVR photometry of HS Aqr, EG Cep, VM LMi,
and DU Boo
--------------------------------------------------------------------------------
See also:
B/vsx : AAVSO International Variable Star Index VSX (Watson+, 2006-2014)
B/gcvs : General Catalogue of Variable Stars (Samus+ 2007-2013)
V/119 : Catalogue of field contact binary stars (Pribulla+, 2003)
II/233 : Tycho variables stars (Piquard 2001)
V/120 : Catalog of early-type contact binaries (Bondarenko+, 1996)
J/AN/334/860 : Catalogue of eclipsing variables. Ver. 2 (Avvakumova+, 2013)
J/AJ/143/99 : Photometry of W UMa eclipsing binaries (Terrell+, 2012)
J/MNRAS/427/2917 : Classification of Hipparcos variables (Rimoldini+, 2012)
J/MNRAS/414/2602 : Automated classification of HIP variables (Dubath+, 2011)
J/AJ/138/466 : NSVS variables automated classification (Hoffman+, 2009)
J/AJ/136/586 : Radial velocities of 10 close binaries (Rucinski+, 2008)
J/PASP/120/1128 : Calibrated griz magnitudes of Tycho star (Ofek, 2008)
J/AJ/131/621 : Catalog of 1022 bright contact binary stars (Gettel+, 2006)
J/MNRAS/370/2013 : Catalogue of close binaries (Soydugan+, 2006)
J/A+A/446/785 : Catalogue of eclipsing variables (Malkov+, 2006)
J/AJ/132/769 : Radial velocities of 10 close binaries (Pribulla+, 2006)
J/A+A/373/576 : Detection of Tycho variables stars (Piquard+, 2001)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 A6 --- Name Star name
8- 22 A15 --- CName Comparison star name
24- 28 F5.3 mag sigmaB Standard deviation of the B light curve residual
30- 34 F5.3 mag sigmaV Standard deviation of the V light curve residual
36- 40 F5.3 mag sigmaR Standard deviation of the R light curve residual
42- 53 F12.4 d HJD Heliocentric Julian Date
55- 60 F6.4 d e_HJD Error in HJD
62- 70 F9.7 --- Per [0.47755/1.05589] Period
72- 80 F9.7 --- e_Per Error in Per
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 A6 --- Name Star name
8 A1 --- Flt [BVR] Filter used (Johnson-Cousins B, V, or R)
10- 23 F14.6 d HJD Heliocentric Julian Date of observation
25- 33 F9.7 --- Phase [0/1] Phase
35- 40 F6.3 mag Dmag [-2.01/0.754] Differential magnitude in Flt
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Sylvain Guehenneux [CDS] 07-Apr-2014