Optical flare activity in the low-mass eclipsing binary GJ 3236
Tóm tắt
We present our observations of the low-mass eclipsing binary GJ 3236. We have analyzed a phased
$R_{C}$
light-curve and confirmed previously determined fundamental parameters of the components. We detected evolution of the spot(s) and found that there exists a large spot near a polar region of the primary component and another spot either on the primary or the secondary component. We also observed 7 flare events and determined a flare rate of about 0.1 flares per hour. We observed two high energy, long-term flares with a complex light curve and possibly four weak short-term flaring events. A majority of the flares was detected in the
$R_{C}$
filter, which indicate their high energy.
Tài liệu tham khảo
Allred, M.C., Kowalski, A.F., Carlsson, M.: Astrophys. J. 809, 104 (2015)
Andronov, I.L., Baklanov, A.V.: Astron. School Rep. 5, 264 (2004)
Chabrier, G., Gallardo, J., Baraffe, I.: Astron. Astrophys. 472, 17 (2007)
Davenport, J.R.A., et al.: Astrophys. J. 748, 58 (2012)
Davenport, J.R.A., et al.: Astrophys. J. 797, 122 (2014)
Dittmann, J.A., et al.: Astrophys. J. 784, 156 (2014)
Gliese, W., Jahreiß, H.: Preliminary Version of the Third Catalogue of Nearby Stars (1991)
Hartman, J.M., et al.: Astrophys. J. 675, 1254 (2008)
Hawley, S.L., Gizis, J.E., Reid, I.N.: Astron. J. 112, 2799 (1996)
Hünsch, M., et al.: Astron. Astrophys. Suppl. Ser. 135, 319 (1999)
Irwin, J., et al.: Astrophys. J. 701, 1436 (2009)
Kim, Y., Andronov, I.L., Jeon, Y.B.: J. Astron. Space Sci. 21, 191 (2004)
Kovacs, G., Bakos, G., Noyes, R.W.: Mon. Not. R. Astron. Soc. 356, 557 (2005)
Kudzej, I., et al.: Odessa Astronom. Publ. 20, 100 (2007)
Kövari, Z., et al.: Astron. Nachr. 328, 904 (2007)
Nelson, T.E., Caton, D.B.: Inf. Bull. Var. Stars 5789 (2007)
Nutzman, P., Charbonneau, D.: Publ. Astron. Soc. Pac. 120, 317 (2008)
Pettersen, B.R.: Sol. Phys. 121, 299 (1989)
Pi, Q., Zhang, L.Y., Zhong-mu, L., Zhang, X.: Astron. J. 147, 50 (2014)
Press, W.H., Teukolsky, S.A., Vetterling, W.T., Flannery, B.P.: Numerical Recipes in C. Cambridge University Press, London (2002)
Pribulla, T., et al.: Astron. Nachr. 333, 754 (2012)
Prša, A., Zwitter, T.: Astrophys. J. 628, 426 (2005)
Ribas, I.: Astron. Astrophys. 398, 239 (2003).
Qian, S.B., Zhang, J., Zhu, L.Y., et al.: Mon. Not. R. Astron. Soc. 423, 3646 (2012)
Šmelcer, L.: Open Eur. J. Var. Stars 169, 14 (2015)
Zacharias, N., Finch, C., Subasavage, J., et al.: Astron. J. 150, 101 (2015)