We present the first results obtained from an extensive study of eclipsing
binary (EB) system candidates recently detected in the VISTA Variables in the
Vía Láctea (VVV) near-infrated (NIR) Survey. We analyze the VVV tile d040
in the southern part of the Galactic disc wherein the interstellar reddening is
comparatively low, which makes it possible to detect hundreds of new eclipsing
binary candidates. We present here the light curves and the determination of
the geometric and physical parameters of the best candidates found in this "NIR
window", including 37 contact, 50 detached and 13 semi-detached eclipsing
binary systems. We infer that the studied systems have an average of the $K_s$
amplitudes of $0.8$ mag and a median period of 1.22 days where, in general,
contact binaries have shorter periods. Using the "Physics Of Eclipsing
Binaries" (PHOEBE) interactive interface, which is based on the Wilson and
Devinney code, we find that the studied systems have low eccentricities. The
studied EBs present mean values of about 5700 K and 4900 K for the $T_1$ and
$T_2$ components, respectively. The mean mass-ratio ($q$) for the contact EB
stars is $\sim$ 0.44. This new Galactic disc sample is a first approach to the
massive study of NIR EB systems.
Description
A hundred new eclipsing binary system candidates studied in a near-infrared window in the VVV survey
%0 Generic
%1 gramajo2020hundred
%A Gramajo, L. V.
%A Palma, T.
%A Minniti, D.
%A Saito, R. K.
%A Clariá, J. J.
%A Kammers, R.
%A Surot, F.
%D 2020
%K astrophysics
%T A hundred new eclipsing binary system candidates studied in a
near-infrared window in the VVV survey
%U http://arxiv.org/abs/2011.02530
%X We present the first results obtained from an extensive study of eclipsing
binary (EB) system candidates recently detected in the VISTA Variables in the
Vía Láctea (VVV) near-infrated (NIR) Survey. We analyze the VVV tile d040
in the southern part of the Galactic disc wherein the interstellar reddening is
comparatively low, which makes it possible to detect hundreds of new eclipsing
binary candidates. We present here the light curves and the determination of
the geometric and physical parameters of the best candidates found in this "NIR
window", including 37 contact, 50 detached and 13 semi-detached eclipsing
binary systems. We infer that the studied systems have an average of the $K_s$
amplitudes of $0.8$ mag and a median period of 1.22 days where, in general,
contact binaries have shorter periods. Using the "Physics Of Eclipsing
Binaries" (PHOEBE) interactive interface, which is based on the Wilson and
Devinney code, we find that the studied systems have low eccentricities. The
studied EBs present mean values of about 5700 K and 4900 K for the $T_1$ and
$T_2$ components, respectively. The mean mass-ratio ($q$) for the contact EB
stars is $\sim$ 0.44. This new Galactic disc sample is a first approach to the
massive study of NIR EB systems.
@misc{gramajo2020hundred,
abstract = {We present the first results obtained from an extensive study of eclipsing
binary (EB) system candidates recently detected in the VISTA Variables in the
V\'ia L\'actea (VVV) near-infrated (NIR) Survey. We analyze the VVV tile d040
in the southern part of the Galactic disc wherein the interstellar reddening is
comparatively low, which makes it possible to detect hundreds of new eclipsing
binary candidates. We present here the light curves and the determination of
the geometric and physical parameters of the best candidates found in this "NIR
window", including 37 contact, 50 detached and 13 semi-detached eclipsing
binary systems. We infer that the studied systems have an average of the $K_s$
amplitudes of $0.8$ mag and a median period of 1.22 days where, in general,
contact binaries have shorter periods. Using the "Physics Of Eclipsing
Binaries" (PHOEBE) interactive interface, which is based on the Wilson and
Devinney code, we find that the studied systems have low eccentricities. The
studied EBs present mean values of about 5700 K and 4900 K for the $T_1$ and
$T_2$ components, respectively. The mean mass-ratio ($q$) for the contact EB
stars is $\sim$ 0.44. This new Galactic disc sample is a first approach to the
massive study of NIR EB systems.},
added-at = {2020-11-06T20:49:01.000+0100},
author = {Gramajo, L. V. and Palma, T. and Minniti, D. and Saito, R. K. and Clariá, J. J. and Kammers, R. and Surot, F.},
biburl = {https://www.bibsonomy.org/bibtex/2d0e6f821fc7823412fa98cfacde21e4b/zechmeister},
description = {A hundred new eclipsing binary system candidates studied in a near-infrared window in the VVV survey},
interhash = {752857067f66e903990df558e3a76c63},
intrahash = {d0e6f821fc7823412fa98cfacde21e4b},
keywords = {astrophysics},
note = {cite arxiv:2011.02530Comment: 14 pages, 10 figures. Accepted for publication in PASA},
timestamp = {2020-11-06T20:49:01.000+0100},
title = {A hundred new eclipsing binary system candidates studied in a
near-infrared window in the VVV survey},
url = {http://arxiv.org/abs/2011.02530},
year = 2020
}