The preliminary orbit of the new massive binary HD 93249

ANSÍN, T.; BARBÁ, R H; GAMEN, R; MORRELL, N I

Viedma

Congreso; Reunión Anual de la AAA; 2019

UNRN + AAA

The OWN Survey is a high-resolution spectroscopic monitoring of Southern O and WN-type stars, whose multiplicity status is unknown. This project started more than ten years ago and it has discovered an important number of new binaries and other multiple systems. In this context, we present the first spectroscopic orbit of HD~93249, the brightest member of the Trumpler~15 open cluster, demonstrating that this is a short period binary system composed of a primary star of type O9~III and an early B-type secondary star.