000003984 001__ 3984
000003984 005__ 20190129132001.0
000003984 0247_ $$2DOI$$a 10.1093/mnras/sty1906
000003984 037__ $$aSCART-2019-0109
000003984 100__ $$aChehlaeh, N.
000003984 245__ $$aPhotometric study and search for variable stars in the intermediate-age open cluster NGC 2126
000003984 260__ $$c2018
000003984 520__ $$aWe present the results of an analysis of photometric time-series observations for NGC 2126 acquired during the years 2004, 2013, and 2015. NGC 2126 is an intermediate-age open cluster which has a population of stars inside the δ Scuti instability strip. The main purpose is to search for new variable stars, to study their light curves and pulsation spectra. Eleven variables are reported, two of which are new discoveries, eight are pulsating and three eclipsing binary stars, one of which has a pulsating component (V551 Aur). Our 10 times of light minimum along with others compiled from the literature were used to revise the orbital period of V551 Aur: Porb = 1.1731752(8) d. The Wilson-Devinney technique was used to analyse its light curves and to determine a new set of the system's parameters. We found a single pulsation period Ppul = 0.12964977(3) d in the residuals which lies near the 9th harmonic of the orbital period. We determined the accurate value of high proper motion star LHS 1809 as μαcos δ = 115.7± 0.1 mas yr^(-1) and μδ = -823.7 ± 0.1 mas yr^(-1). From the construction of the colour-magnitude diagram, we estimated the physical parameters of the cluster. We found that the shape of the colour-magnitude diagram at the turn-off point is well reproduced with an isochrone with log(t) of 9.1 ± 0.1 yr, metallicity of 0.019, E(B - V) = 0.27± 0.01 mag, and (m - M)0 = 10.80 ± 0.05 mag.
000003984 594__ $$aNO
000003984 6531_ $$atechniques: photometric
000003984 6531_ $$abinaries: eclipsing
000003984 6531_ $$astars: variables: δ Scuti
000003984 6531_ $$aopen clusters and associations: individual: NGC 2126
000003984 700__ $$aMkrtichian, D.
000003984 700__ $$aLampens, P.
000003984 700__ $$aKomonjinda, S.
000003984 700__ $$aKim, S.-L.
000003984 700__ $$aVan Cauteren, P.
000003984 700__ $$aKusakin, A. V.
000003984 700__ $$aGlazunova, L.
000003984 773__ $$c1850-1863$$n2$$pMonthly Notices of the Royal Astronomical Society$$v480$$y2018
000003984 8560_ $$fpatricia.lampens@observatoire.be
000003984 85642 $$ahttp://cdsads.u-strasbg.fr/abs/2018MNRAS.480.1850C
000003984 905__ $$apublished in
000003984 980__ $$aREFERD