The ISM around southern O-type stars

M.C. MARTIN, C. E. CAPPA, P. BENAGLIA

Carilo, Argentina

Workshop; Msassive stars: stellar parameters and circumstellar interactions; 2006

FCAG, UNLP

Based on \hi\ 21cm line observations obtained with the radiotelescope of the IAR,  and data at other frequencies, we analyzed the ISM in the environs of the galactic O-type stars HD\,171589, HD\,38666 and HD\,124979. They are located at relatively high galactic latitudes ($\it{b}$ $>$ 3\deg), favouring the formation of large cavities and shells because of the low ambient densities. This analysis allowed us to disclose \hi\ interstellar bubbles probably related to the stars.