Fabian Kaczmarek

Instytut Obserwatorium Astronomiczne, Uniwersytet im. Adama Mickiewicza
w Poznaniu

Sesja X: Sesja plakatowa

Czwartek 14.09.2023 12:00 – 13:00

abstrakt:
Symbiotic stars (SySts) represent an example of close binary systems in which a hot, compact object, most often a white dwarf, accretes material from a cool component, usually an evolved red giant. Such systems are characterized by the longest orbital periods among interacting binary stars. In order to spatially resolve the components of SySts, high angular resolution of astronomical observations is required. Optical, long-baseline interferometry provides an ideal method for this task, as it allows to directly and very precisely study such binary stellar systems, e.g. measure the radii of their components with spatial resolution of the order of milli-arcseconds. Here we would like to present the results of our analysis of the interferometric observations that were made for the symbiotic recurrent nova RS Ophiuchi.
The data was obtained at two epochs: 5.5 days and 24.5 days after the outburst, using the MATISSE/VLTI instrument. We were able to determine the sizes of the emitting regions, as well as follow the expansion of the ejected matter.