The long-term optical evolution of the black hole candidate MAXI J1659−152
2017; Oxford University Press; Volume: 475; Issue: 1 Linguagem: Inglês
10.1093/mnras/stx3156
ISSN1365-2966
AutoresJ. M. Corral-Santana, M. A. P. Torres, T. Shahbaz, E. S. Bartlett, D. M. Russell, A. K. H. Kong, J. Casares, T. Muñoz‐Darias, F. E. Bauer, J. Homan, P. G. Jonker, D. Mata Sánchez, T. Wevers, P. Rodríguez-Gil, Fraser Lewis, Laurien Schreuder,
Tópico(s)Pulsars and Gravitational Waves Research
ResumoWe present 5 years of optical and infrared data of the black hole candidate MAXI J1659-152 covering its 2010 outburst, decay and quiescence. Combining optical data taken during the outburst decay, we obtain an orbital period of 2.414 $\pm$ 0.005 h, in perfect agreement with the value previously measured from X-ray dips. In addition, we detect a clear H$α$ excess in MAXI J1659-152 with data taken during the outburst decay. We also detect a single hump modulation most likely produced by irradiation. Assuming that the maximum occurs at orbital phase 0.5, we constrain the phase of the X-ray dips to be ~ 0.65. We also detect the quiescent optical counterpart at r' = 24.20 $\pm$ 0.08, I = 23.32 $\pm$ 0.02 and H = 20.7 $\pm$ 0.1. These magnitudes provide colour indices implying an M2-M5 donor star assuming 60% contribution from a disc component in the r'-band.
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