2015ApJS..217...28Y

Query : 2015ApJS..217...28Y

2015ApJS..217...28Y - Astrophys. J., Suppl. Ser., 217, 28 (2015/April-0)

Eclipsing binaries from the CSTAR project at Dome A, Antarctica.

YANG M., ZHANG H., WANG S., ZHOU J.-L., ZHOU X., WANG L., WANG L., WITTENMYER R.A., LIU H.-G., MENG Z., ASHLEY M.C.B., STOREY J.W.V., BAYLISS D., TINNEY C., WANG Y., WU D., LIANG E., YU Z., FAN Z., FENG L.-L., GONG X., LAWRENCE J.S., LIU Q., LUONG-VAN D.M., MA J., WU Z., YAN J., YANG H., YANG J., YUAN X., ZHANG T., ZHU Z. and ZOU H.

Abstract (from CDS):

The Chinese Small Telescope ARray (CSTAR) has observed an area around the Celestial South Pole at Dome A since 2008. About 20,000 light curves in the i band were obtained during the observation season lasting from 2008 March to July. The photometric precision achieves about 4 mmag at i = 7.5 and 20 mmag at i = 12 within a 30 s exposure time. These light curves are analyzed using Lomb-Scargle, Phase Dispersion Minimization, and Box Least Squares methods to search for periodic signals. False positives may appear as a variable signature caused by contaminating stars and the observation mode of CSTAR. Therefore, the period and position of each variable candidate are checked to eliminate false positives. Eclipsing binaries are removed by visual inspection, frequency spectrum analysis, and a locally linear embedding technique. We identify 53 eclipsing binaries in the field of view of CSTAR, containing 24 detached binaries, 8 semi-detached binaries, 18 contact binaries, and 3 ellipsoidal variables. To derive the parameters of these binaries, we use the Eclipsing Binaries via Artificial Intelligence method. The primary and secondary eclipse timing variations (ETVs) for semi-detached and contact systems are analyzed. Correlated primary and secondary ETVs confirmed by false alarm tests may indicate an unseen perturbing companion. Through ETV analysis, we identify two triple systems (CSTAR J084612.64-883342.9 and CSTAR J220502.55-895206.7). The orbital parameters of the third body in CSTAR J220502.55-895206.7 are derived using a simple dynamical model.

Abstract Copyright: ∼

Journal keyword(s): binaries: eclipsing - catalogs - methods: data analysis - site testing - stars: statistics - techniques: photometric

Nomenclature: Tables 1, 3-5: [YZW2015] CSTAR JHHMMSS.ss+DDMMSS.s N=3+24+8+18.

Simbad objects: 53

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Number of rows : 53
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 TYC 9498-800-1 EB* 00 01 17.1713824776 -87 44 02.807947140   13.51 12.06 12.31   ~ 4 0
2 2MASS J00524246-8917319 EB* 00 52 42.5009493744 -89 17 32.128406196           ~ 6 0
3 UCAC2 23416 El* 02 25 25.4914811520 -87 12 13.151550924   14.30 13.72 13.81   ~ 2 1
4 UCAC4 011-000425 EB* 02 25 28.7066088805 -87 57 26.618832383   14.514 13.928 13.908   ~ 1 0
5 2MASS J03112278-8915130 EB* 03 11 22.9441469016 -89 15 13.064806692           ~ 3 0
6 UCAC2 4116 EB* 03 14 01.2094272792 -88 32 52.633346316       15.02   ~ 3 0
7 UCAC2 9006 EB* 03 31 30.2675368296 -88 04 23.871104220   15.97 15.03 14.84   ~ 3 0
8 ASASSN-V J042021.53-882511.6 dS* 04 20 12.9388049688 -88 25 03.148325508           ~ 5 0
9 2MASS J05132951-8719426 EB* 05 13 29.5738176072 -87 19 42.678294672           ~ 2 0
10 UCAC2 178 EB* 05 14 24.8332118280 -89 32 23.956904652       15.79   ~ 3 0
11 UCAC2 16485 EB* 06 17 50.0223330744 -87 39 46.003434588   14.70 13.86 13.72   ~ 2 0
12 EVR J061942.89-872037.7 EB* 06 19 42.3257294304 -87 20 37.877548740   13.30 12.77 12.85   ~ 3 1
13 2MASS J06284195-8802416 EB* 06 28 41.7669611568 -88 02 41.571841236           ~ 4 0
14 ASAS J064047-8815.4 EB* 06 40 47.0274435888 -88 15 21.159299700   12.63 12.26     ~ 11 0
15 2MASS J07165261-8728561 EB* 07 16 52.5975472848 -87 28 56.373908448           ~ 3 0
16 UCAC2 16911 EB* 07 34 19.1585204784 -87 40 55.458753852   14.82 14.24 14.12   ~ 1 1
17 SV* BV 1040 EB* 07 43 52.8412551792 -89 07 36.954451884   12.4   12.90   ~ 8 0
18 2MASS J08084572-8800016 EB* 08 08 45.4505460528 -88 00 01.953940752           ~ 3 0
19 UCAC2 17303 EB* 08 39 41.0262316752 -87 39 01.785433932   13.52 12.73 12.53   ~ 3 0
20 2MASS J08402733-8847003 EB* 08 40 27.2510140536 -88 47 00.140382564           ~ 5 0
21 ASAS J084613-8833.7 EB* 08 46 10.9986964176 -88 33 42.777503532           K4 33 0
22 TYC 9514-541-1 EB* 09 02 20.6206527096 -87 37 41.006756244   12.57 12.26     ~ 4 0
23 TYC 9518-443-1 EB* 09 03 59.1362955984 -88 33 07.526462868   12.19 11.72     ~ 8 0
24 EVR J093342.00-865534.0 EB* 09 33 42.0175276008 -86 55 34.380307416   13.78 13.03 12.89   ~ 3 1
25 2MASS J09583480-8823599 EB* 09 58 34.7349399432 -88 24 00.052147692           ~ 3 0
26 TYC 9519-37-1 El* 10 01 21.5469241632 -88 13 30.911702880   12.30 12.58     ~ 4 0
27 UCAC2 10877 EB* 10 32 31.3393722792 -88 25 02.856085896   14.75 14.07 13.90   ~ 2 0
28 2MASS J10401567-8729298 EB* 10 40 15.5927935104 -87 29 29.823331632           ~ 3 0
29 EVR J110815.96-870153.8 EB* 11 08 16.2465025968 -87 01 54.113649456   13.518 12.683 12.648   K4V 2 1
30 TYC 9516-461-1 EB* 12 21 36.2392602888 -88 00 14.447928204   12.34 12.12     ~ 6 0
31 V* EI Oct EB* 12 32 42.9920684088 -87 26 22.815759876   12.24 11.72     ~ 10 0
32 [WMK2011] CSTAR 16836 dS* 12 49 18.0336738984 -88 11 17.467329444           ~ 4 0
33 HD 111644 EB* 13 01 58.3365245160 -87 39 56.283251184   9.89 9.30 9.66   F8V 10 1
34 2MASS J13234810-8816047 EB* 13 23 48.2210175768 -88 16 04.803088692           ~ 5 0
35 2MASS J13531738-8854152 EB* 13 53 17.2776428448 -88 54 15.229040076           ~ 5 0
36 UCAC2 11973 EB* 14 20 51.4060553088 -88 14 33.981129528   13.88 13.33 13.18   ~ 2 0
37 [WMK2011] CSTAR 14111 dS* 14 29 01.4149672848 -87 38 16.339246620           ~ 4 0
38 EVR J150534.08-873605.8 EB* 15 05 34.7282585064 -87 36 05.693728068   13.08 13.03     ~ 2 1
39 V* FF Oct RS* 15 57 05.5179111240 -87 30 05.265842652   13.854 12.708 12.505   ~ 5 0
40 UCAC2 12446 EB* 15 59 17.4072030936 -88 00 42.977465712   15.71 14.86 14.71   ~ 3 0
41 UCAC2 20294 EB* 16 31 37.2082343424 -87 40 07.928266440   13.47 12.71 12.59   ~ 2 0
42 TYC 9531-387-1 EB* 18 17 24.7653058320 -87 06 16.308677016   12.47 11.85 11.79   ~ 1 1
43 CPD-88 148 EB* 18 30 58.0343986752 -88 43 17.477248620   10.60 10.12     F5 8 0
44 TYC 9535-147-1 El* 19 17 52.7371505712 -88 51 11.100564648   13.01 12.39     ~ 5 0
45 2MASS J19382923-8850562 EB* 19 38 28.9006669248 -88 50 56.269887180           ~ 4 0
46 2MASS J19502673-8744506 EB* 19 50 26.6453069376 -87 44 50.685305676           ~ 4 0
47 TYC 9532-864-1 EB* 20 02 18.5341678968 -88 02 49.886580624   13.07 12.78     ~ 4 0
48 TYC 9532-729-1 EB* 20 28 29.6796094680 -87 46 16.479143364   12.91 12.27     ~ 6 0
49 CPD-89 44 EB* 20 54 10.8094044048 -89 03 45.079869744   11.66 10.85     ~ 1 0
50 2MASS J22051862-8952065 EB* 22 05 16.4129384832 -89 52 06.698164152           ~ 4 0
51 TYC 9533-233-1 SB* 22 37 07.1148720384 -87 28 49.849560444   12.12 11.82     ~ 5 0
52 UCAC2 14159 EB* 22 46 02.4288633672 -88 04 58.883540376   14.85 14.21 14.22   ~ 2 0
53 UCAC2 14426 EB* 23 57 27.6406496448 -88 24 54.270168696   13.29 12.70 12.68   ~ 2 0

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