2021RAA....21..122L

Query : 2021RAA....21..122L

2021RAA....21..122L - Research in Astron. and astroph., 21, 122-122 (2021/May-0)

The first photometric analysis and period investigation of the K-type W UMa type binary system V0842 Cep.

LI Y.-Y., LI K. and LIU Y.

Abstract (from CDS):

V0842 Cep is a W UMa-type binary star that has been neglected since its discovery. We analysed the VRcIc light curves, obtained by the 1 m telescope at Weihai Observatory of Shandong University, using the Wilson-Devinney code. V0842 Cep was found to be a shallow contact binary system (f = 8.7%) with a mass ratio of 2.281. Because its orbital inclination is greater than 80°, the photometric results are reliable. A period study is included which reveals a continually decreasing orbital period (<?CDATA °p/°t?> = 1.50(±0.42)x10-7 d yr-1). This trend could be attributed to the angular momentum loss via stellar wind.

Abstract Copyright: © 2021 National Astronomical Observatories

Journal keyword(s): stars: binaries: close - stars: binaries: eclipsing - stars: individual (V0842 Cep)

Simbad objects: 17

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Number of rows : 17
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 V* V523 Cas SB* 00 40 06.2679105096 +50 14 15.518292216   11.698 10.62 9.969 9.388 K4V 174 0
2 V* YZ Phe EB* 01 42 25.8889858968 -45 57 03.828072672     12.56     K3V 29 0
3 V* V1799 Ori EB* 04 47 18.1951632672 +06 40 56.127764964     13.14     ~ 22 0
4 1SWASP J055416.98+442534.0 EB* 05 54 17.0161527735 +44 25 34.076373148           ~ 26 1
5 NSVS 7178717 EB* 06 45 01.2244405485 +34 21 54.651662131   15.298 14.11     K4-5 22 0
6 ATO J106.7629+12.9995 EB* 07 07 03.1084373856 +12 59 58.470840636           ~ 13 0
7 V* IL Cnc EB* 08 55 51.4949348496 +20 03 38.519201664   12.4 12.66     ~ 29 0
8 V* CC Com SB* 12 12 06.0378799056 +22 31 58.682832024   13.09 11.42 10.543 10.085 K4/5V 228 0
9 V* RV CVn EB* 13 40 18.1619548296 +28 18 21.542710140   15.02 13.84 13.57   F8 44 0
10 NSVS 2701634 EB* 13 46 08.7291564048 +61 05 12.718039848   12.49 11.99     ~ 13 0
11 V* FY Boo EB* 13 46 51.8065366440 +22 57 14.068669032     13.14     K1 38 0
12 1RXS J161336.5-284722 EB* 16 13 35.7851998176 -28 47 22.592348520     12.55     ~ 14 0
13 V* FS CrA EB* 18 06 12.1976558568 -37 31 29.638682040           ~ 19 0
14 V* V1104 Her EB* 18 09 47.6414646096 +49 02 54.991909536   14.0 13.51 13.560   M0 44 0
15 V* FG Sct EB* 18 45 03.6523226328 -06 06 15.512600268   14.813 13.714 12.627   ~ 32 0
16 NSVS 1276727 EB* 21 11 40.7165717112 +76 40 10.024742280   14.0       ~ 8 0
17 V* BI Vul EB* 21 22 48.0350619264 +27 01 39.846690516           ~ 56 0

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