2014MNRAS.442.2620Z


C.D.S. - SIMBAD4 rel 1.7 - 2021.06.18CEST12:08:18

2014MNRAS.442.2620Z - Mon. Not. R. Astron. Soc., 442, 2620-2636 (2014/August-2)

Magnetic activity and orbital periods of five low-mass eclipsing binaries.

ZHANG L.-Y., PI Q.-F. and YANG Y.-G.

Abstract (from CDS):

We report 15 new VRI light curves of five low-mass eclipsing binaries (NSVS 02502726, NSVS 07453183, NSVS 11868841, NSVS 06550671 and NSVS 10653195) that were observed between 2010 and 2012. We analysed our new data together with three published spectroscopic observations and seven published light curves using a modified version of the Wilson-Devinney program. Orbital solutions of the five low-mass eclipsing binaries were revised and new star-spot parameters were obtained. We found that spot locations on the five low-mass eclipsing binaries changed over several years. However, the star-spots for NSVS 07453183 and NSVS 06550671 were stable for several months. More interestingly, for NSVS 02502726, the spots within a star-spot longitude region of 180°-360° indicated a magnetic activity cycle of 5.9(±0.2) yr. Moreover, we detected the first flare-like event on NSVS 07453183 at phase 0.39. The observations of the chromospheric activity indicators (Hβ and Hγ lines) revealed that NSVS 10653195 and NSVS 06550671 were active. For NSVS 02502726, we found a weak continuous secular decrease at a smaller rate of dp/dt = -2.1(0.8)x10–7d/yr than the previous result. For NSVS 07453183, the O-C times appeared to increase at cycle 6000, and this was followed by a decrease at cycle 6500.

Abstract Copyright: © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)

Journal keyword(s): binaries: eclipsing - stars: individual: NSVS 02502726 - stars: individual: NSVS 06550671 - stars: individual: NSVS 11868841 - stars: individual: NSVS 07453183 - stars: individual: NSVS 10653195

VizieR on-line data: <Available at CDS (J/MNRAS/442/2620): table6.dat table3.dat table4.dat table5.dat>

CDS comments: Probable misprints: NSVS 02500276 = NSVS 02502726. NSVS 065007557 = NSVS 06507557. NVSV 06550771 and NSVS 06500671 = NSVS 06550671.

Simbad objects: 29

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Number of rows : 29

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* DV Psc EB* 00 13 09.2041073545 +05 35 43.005048643   11.61 10.61 10.312 9.131 K5Ve 58 0
2 UCAC3 231-9376 EB* 01 58 23.8767946896 +25 21 19.689894862   14.53 12.80     K9+M3 16 0
3 V* BX Tri EB* 02 20 50.850720 +33 20 47.55228   14.86 13.37 12.98 10.98 ~ 39 0
4 TYC 2314-780-1 * 02 21 06.4062647278 +33 17 04.671544571   12.90 11.96     ~ 2 0
5 StKM 1-258 RS* 02 22 25.8545367826 +47 29 19.820161314   12.67 11.57     M0 22 0
6 V* V471 Tau EB* 03 50 24.9664598642 +17 14 47.433240686   10.258 9.373   8.393 K2V+DA 623 0
7 * eta Gem RG* 06 14 52.6452865329 +22 30 24.434377815 6.55 4.89 3.28 1.79 0.48 M2IIIa 245 0
8 HD 47886 V* 06 41 17.2190764103 +11 00 11.521961826   7.89 6.21     M1III 28 0
9 V* KQ Gem EB* 06 43 47.3345351001 +15 54 21.378822125           ~ 39 0
10 V* YY Gem BY* 07 34 37.4475372002 +31 52 10.181030942 11.60 10.56 9.27 7.69 6.67 M0.5VeFe-2 831 0
11 V* CU Cnc Er* 08 31 37.5740891049 +19 23 39.398696822   12.83 11.809 11.592   M5Ve 205 0
12 TYC 3798-1234-1 * 08 43 47.7402041511 +54 23 11.633005978   12.22 12.32     ~ 3 0
13 GSC 03798-01250 * 08 44 05.2948575649 +54 22 33.350910807   12.9       ~ 3 0
14 GSC 03798-01207 EB* 08 44 11.0378523826 +54 23 47.455589275   14.76 13.67 13.36   M 25 0
15 TYC 2499-356-1 * 09 15 54.9907724101 +36 13 30.493441800   12.24 11.74     ~ 1 0
16 NSVS 7446320 EB* 09 16 12.2708405599 +36 15 33.512534771     13.012     M2 12 0
17 V* QS Vir EB* 13 49 52.0031855330 -13 13 37.001934702 14.27 14.98 14.40 14.37   DA3+dM 123 1
18 V* GU Boo EB* 15 21 54.8242649848 +33 56 09.067728168     13.11     M0/M1.5 89 0
19 V* V505 Ser EB* 16 02 48.2246171758 +25 20 38.219613334   11.47 10.552 10.16 9.479 ~ 37 1
20 NSVS 10653195 EB* 16 07 27.8649493526 +12 13 59.124871502     12.501     ~ 8 0
21 V* CM Dra BY* 16 34 20.3299130309 +57 09 44.365524588   14.50 12.87 10.85 9.26 M4.5V 411 0
22 V* V1034 Her RS* 16 52 41.7842152816 +12 49 04.904302060     12.89     ~ 28 0
23 KIC 10200948 Ro* 19 15 47.3846580135 +47 17 39.828203157           ~ 5 0
24 V* V2540 Cyg EB* 20 23 37.8590949555 +46 55 51.966637943   12.96 12.07     ~ 19 0
25 HD 200391 Ae* 21 02 25.9068825509 +27 48 26.439773330   7.93 7.374   6.624 G0V+G5V 344 0
26 V* RT And RS* 23 11 10.0981467675 +53 01 33.031477014   9.58 9.043 8.73   F8V+G0-K1-3V 366 0
27 NSVS 11868841 EB* 23 17 57.5597817690 +19 17 02.787794965     14.084     G9 13 0
28 V* DI Peg EB* 23 32 14.6735672777 +14 58 08.750442842   10.00 9.513     F0IVn 139 0
29 HD 224085 RS* 23 55 04.0516465022 +28 38 01.248194500 8.88 8.20   6.9   K2+IVeFe-1 692 0

    Equat.    Gal    SGal    Ecl

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2021.06.18-12:08:19

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