Linking massive stars to their natal molecular clouds: a preliminary analysis

BLANCO AGUSTINA; CICHOWOLSKI SILVINA; SUAD LAURA ANDREA

Congreso; 64 Reunión Anual de la AAA; 2022

IAFE

Bearing in mind that stars are born in the densest regions of molecular clouds and that massivestars are known to disturb their environment through strong winds and intense UV radiation fields, we aim toresearch the impact that massive stars have on their parental molecular clouds. In this work, we make use ofCO (J = 1-0) data cubes obtained from the Five College Radio Astronomical Observatory survey to study thedistribution of the molecular gas emission in the surroundings of several O-type and Wolf-Rayet stars locatedin the second Galactic quadrant. For this purpose, we analyze the presence of molecular gas around each star,while considering the emission integrated into three velocity intervals of increasing width. These intervals werecentered on the velocity value that corresponds to the distance of each star, according to a Galaxy rotation curvemodel. Based on the results yielded from the image analysis, we carry out a statistical study of the amount anddistribution of molecular gas in the vicinity of massive stars.