A Simultaneous X-Ray and Optical Study of Tt-Arietis
Stecklum, B.; Toth, I.; Richter, G. A.; Hudec, R.; Goetz, W.; Pfau, W.; Valnícek, B.; Peřesty, R.; Wenzel, W.; Hacke, G.; Hutch, H.; Schult, R.; Reimann, G. -H.; Tremko, J.; Mrkos, A.; Schpitshka, I. V.; Kojevnikov, V. P.; Kumshiashvili, M. I.; Oprescu, G.; Dumitrescu, A.; Cristescu, C.; Bojack, W.; Patkós, L.; Olah, K.
Czech Republic, Germany, Slovakia, Ukraine, Russia, Georgia, Romania, Hungary
Abstract
Prelimary results of an extended program of coordinated X-ray and optical observations of TT Ari are presented. The object was observed on August 21/22 1985 both in X-rays (EXOSAT) and optical range, about 100 days after the return to the active state. The first detailed simultaneous study of TT Ari in active state indicates the presence of strongly absorbing structure in the system.