Pursuing the determination of absolute masses for young stars. Spectroscopic orbits of low-mass PMS systems in southern star formation regions.
Elvira Covino (INAF-Osservatorio Astronomico di Capodimonte, Napoli, ITALY)
Eike Guenther (Thueringer Landessternwarte Tautenburg)
Massimiliano Esposito (Universita' di Salerno, ITALY)
We report preliminary results of a high-resolution
spectroscopic survey, and long-term monitoring on low-mass
Pre-Main Sequence (PMS) spectroscopic binaries (SBs) in
nearby Star formation regions of the Southern Hemisphere,
aiming to seek for young long-period spectroscopic systems and solve their orbits.
The spectroscopic program is part of a long-term project,
fruit of an extended international collaboration, pursuing
the determination of dynamical masses for a wide sample of
young low-mass stars by combining both spectroscopic and
interferometric techniques, with the ultimate aim to
provide new observational constraints to PMS theoretical models.