# First summer school on disentangling of spectra

### OndÅ™ejov, Czech Republic 15.9.2008 - 19.9.2008

## First Announcement

*Rationale:* Observation of binary stars yields a basic way
to understanding the realm of stars and thus also the deep
universe. In particular, actual dimensions and masses of
binaries can be calculated from radial velocity of the orbital
motion. However, both the measurement of the Doppler shifts as
well as the reconstruction of spectra of the individual binary
components is generally complicated by the blending of their
spectra. To overcome this problem, the technique of the so called
spectra disentangling has been developed, which finds simultaneously
in an iterative procedure the orbital parameters and component
spectra from time series of observed spectra. This technique,
and in particular its version solving the mathematical problem
effectively by means of Fourier transform, has been applied
successfully to many binary and multiple stellar systems. On
the other hand, in some cases users failed for various reasons.
The aim of this summer school is thus to teach the attendants
how to use the technique of Fourier disentangling, to explain
its principle, limitations and some tricks to overcome possible
troubles.

*Programme:* In morning sessions the theory of the disentangling
and related techniques will be explained. Afternoon sessions
will be devoted to practical training and solution of real data.

The number of participants is limited to 30 because of limited space for
practical exercises in the afternoons. The school is aimed at
postgraduate students, post-docs and researchers working in the field of
binary star research.
Interested participants should send an e-mail expressing the intention
to participate and motivation to the address
__k08 (at) sunstel.asu.cas.cz__
as soon as possible, but not later than 29th June 2008.

Last update 20.06.2008