2005AJ....129.2806Z


Query : 2005AJ....129.2806Z

2005AJ....129.2806Z - Astron. J., 129, 2806-2814 (2005/June-0)

Deep, low mass ratio overcontact binaries. II. IK Persei.

ZHU L.-Y., QIAN S.-B., SOONTHORNTHUM B. and YANG Y.-G.

Abstract (from CDS):

BV photometric light curves of the eclipsing binary IK Per were obtained during three nights in 2002 December. The photometric elements were computed using the Wilson-Devinney code. The results reveal that IK Per is an A-type overcontact binary system with a low mass ratio of q=0.17 and a large degree of overcontact of 60%. The asymmetry of the light curves (i.e., the O'Connell effect) is explained by spot models. The observed long-term orbital period decrease [dP/dt=-2.5±0.09x10–7 days/yr] is probably influenced by the presence of a third body in the system. The low mass ratio, high degree of overcontact, and secular orbital decrease all indicate that the situation of IK Per resembles those of FG Hya, GR Vir, and AW UMa. Because of the decrease of their orbital periods, the shrinking of the inner and outer critical Roche lobes will lead the common envelopes to overlap more, and finally the systems will evolve into single rapid-rotation stars.

Abstract Copyright:

Journal keyword(s): Stars: Binaries: Close - Stars: Binaries: Eclipsing - Stars: Evolution - Stars: Individual: Constellation Name: IK Persei

Simbad objects: 14

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Number of rows : 14
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 V* KW Per EB* 01 59 59.9829086502 +53 13 24.893566756   10.60 10.31     A2 43 0
2 V* CU Tau EB* 03 47 36.9103645588 +25 23 15.844877109   12.02 11.23 11.38   G0 58 0
3 GSC 02887-02579 * 04 29 02.4314615538 +42 01 11.992369519   13.1       ~ 2 0
4 GSC 02887-02729 * 04 29 26.5262189427 +41 58 53.174270874   12.5       ~ 2 0
5 V* IK Per EB* 04 29 27.4559757386 +42 03 10.588508212   12.17 11.49     A2 53 0
6 V* ER Ori EB* 05 11 14.5046439527 -08 33 24.601331471   10.02 9.46     G1V: 174 0
7 V* FG Hya EB* 08 27 03.9413981176 +03 30 52.329514882   10.62 10.04   9.401 G0 179 0
8 V* AW UMa EB* 11 30 04.3159101276 +29 57 52.677255375   7.27   6.7   F0 277 1
9 V* CE Leo EB* 11 44 24.2553681651 +23 21 22.850397594     12.39     K 85 0
10 V* RW Com EB* 12 33 00.2841958714 +26 42 58.362399221   12.33 11.682 10.929   G8e 150 0
11 V* GR Vir EB* 14 45 20.2633088053 -06 44 04.130465519   8.54 8.00   7.34 G2/3V 128 0
12 V* AK Her EB* 17 13 57.8235712254 +16 21 00.617382214   9.04 8.51   7.874 F8Vv 252 0
13 V* V417 Aql EB* 19 35 24.1195541620 +05 50 17.659050699   11.23 10.63     G0V+F9V 118 0
14 V* BX Peg EB* 21 38 49.3905754055 +26 41 34.205957391     10.890     G4.5 132 0

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2021.09.26-05:27:41

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