Kottamia 74-inch telescope discovery of the new eclipsing binary 2MASS J20004638+0547475.: First CCD photometry and light curve analysis

被引：9

作者：

Darwish, M. S. ^{[1
,2
]}

Shokry, A. ^{[1
,2
]}

Saad, S. M. ^{[1
,2
]}

El-Sadek, M. A. ^{[1
,2
]}

Essam, A. ^{[1
]}

Ismail, M. ^{[1
,2
]}

机构：

[1] Natl Res Inst Astron & Geophys, Dept Astron, Cairo, Egypt

[2] Kottamia Ctr Sci Excellence Astron & Space Sci KC, STDF, ASRT, Cairo, Egypt

来源：

NEW ASTRONOMY | 2017年 / 53卷

关键词：

2mass j20004638+0547475; Evolution; W Uma; Eclipsing binary and mass transfer; STARS;

D O I：

10.1016/j.newast.2016.11.009

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A CCD photometric study is presented for the eclipsing binary system 2MASSJ20004638 + 0547475. Observations of the system were obtained in the V, R and I colours with the 2Kx2K CCD attached to 1.88 m Kottamia Optical Telescope. New times of light minimum and new ephemeris were obtained. The V, R and I light curves were analyzed using the PHOEBE 0.31 program to determine geometrical and physical parameters of the system. The results show that 2MASS J20004638 + 0547475, is A-Type WUMa and is an overcontact binary with high fill-out factor =69%. The current evolutionary status of the system indicates that the primary component lies very close to the main sequence while the secondary is evolved. The asymmetric maxima were studied and a modeling of the hot spot parameters is given. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：35 / 38

页数：4

共 13 条

[1]

[Anonymous], 2000, Allen's astrophysical quantities

[2]

[Anonymous], MNRAS

[3]

[Anonymous], MINIMAV2 3

[4] Stellar SEDs from 0.3 to 2.5 μm:: Tracing the stellar locus and searching for color outliers in the SDSS and 2MASS [J].

Covey, K. R. ;

Ivezic, Z. ;

Schlegel, D. ;

Finkbeiner, D. ;

Padmanabhan, N. ;

Lupton, R. H. ;

Agueeros, M. A. ;

Bochanski, J. J. ;

Hawley, S. L. ;

West, A. A. ;

Seth, A. ;

Kimball, A. ;

Gogarten, S. M. ;

Claire, M. ;

Haggard, D. ;

Kaib, N. ;

Schneider, D. P. ;

Sesar, B. .

ASTRONOMICAL JOURNAL, 2007, 134 (06) :2398-2417

[5] STARBURSTS, BLUE STRAGGLERS, AND BINARY STARS IN LOCAL SUPERCLUSTERS AND GROUPS .2. THE OLD DISK AND HALO POPULATIONS [J].

EGGEN, OJ ;

IBEN, I .

ASTRONOMICAL JOURNAL, 1989, 97 (02) :431-457

[6] Evolutionary tracks and isochrones for low- and intermediate-mass stars:: From 0.1.5 to 7 M⊙ and from Z=0.0004 to 0.03 [J].

Girardi, L ;

Bressan, A ;

Bertelli, G ;

Chiosi, C .

ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, 2000, 141 (03) :371-383

[7]

HARMANEC P, 1988, B ASTRON I CZECH, V39, P329

[8]

Kwee K, 1956, BAN, V12, p327K

[9]

LUCY LB, 1967, Z ASTROPHYS, V65, P89

[10]

Motl D., 2007, C-Munipack project v1.2.32

← 1 2 →