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Member of the International Virtual Observatory Alliance

In the framework of the Tübingen German Astrophysical Virtual Observatory (GAVO) project, we have developed the registered Tübingen Line Identification and Spectrum Analyzer (TLISA) tool that evaluates spectra and visualizes them.


TLISA is generally designed in VO-compliant form. Especially, its menu navigation is fully intuitive, i.e., no profound knowledge of the background software by a VO user is necessary for an astronomically worthwhile usage.


The first module, SEarch for Faint Objects in Binary Systems (SEFOBS), allows to correct for orbital phase and velocity amplitude. SEFOBS reads the observed spectroscopic data (FITS format) from a selected directory and saves it into the internally used variables. It arranges the data by its observation time and indicates the most important information.


The VO user may then enter orbital information (T0, orbital period and velocity) and search for so-called "s-curves", that indicate spectral lines.

Download and Installation

TLISA is still under development and there is only a development build available.


Download the installer script to retrieve and install its latest version. Alternatively, download the TLISA zip archive, unpack it, and start TLISA using java -jar <name of version>.



version | creation date | comment
TLISA-15w02b-d | 2015-01-08 | dev build


Test data

We provide here a sample of test data (10 MB) based on observations collected at the European Southern Observatory, Chile, program 092.C-0692. Unpack (tar -xzf tlisa_testdata.tgz) it in a working directory and select this within TLISA.

When publishing research making use of this tool, please acknowledge:
"The TLISA tool (http://astro.uni-tuebingen.de/~TLISA) used for this paper was constructed as part of the activities of the German Astrophysical Virtual Observatory."

Please do not hesitate to should any question arise.


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