%0 Journal Article
%T Discovery of a bipolar and highly variable mass outflow from the symbiotic binary StHa 190
%A U. Munari
%A T. Tomov
%A B. F. Yudin
%A P. M. Marrese
%A T. Zwitter
%A R. G. Gratton
%A G. Bonanno
%A P. Bruno
%A A. Cali
%A R. U. Claudi
%A R. Cosentino
%A S. Desidera
%A G. Farisato
%A G. Martorana
%A G. Marino
%A M. Rebeschini
%A S. Scuderi
%A M. C. Timpanaro
%J Physics
%D 2001
%I arXiv
%R 10.1051/0004-6361:20010210
%X A highly and rapidly variable bipolar mass outflow from StHa 190 has been discovered, the first time in a yellow symbiotic star. Permitted emission lines are flanked by symmetrical jet features and multi-component P-Cyg profiles, with velocities up to 300 km/sec. Given the high orbital inclination of the binary, if the jets leave the system nearly perpendicular to the orbital plane, the de-projected velocity equals or exceeds the escape velocity (1000 km/sec). StHa190 looks quite peculiar in many other respects: the hot component is an O-type sub-dwarf without an accretion disk or a veiling nebular continuum and the cool component is a G7 III star rotating at a spectacular 105 km/sec unseen by a large margin in field G giants.
%U http://arxiv.org/abs/astro-ph/0102192v1