A New OB association in the HII region N 50 in the LMC

Details A New OB association in the HII region N 50 in the LMC A New OB association in the HII region N 50 in the LMC

Nov 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998larm.confe.109o&link_type=abstract

"IX Latin American Regional IAU Meeting, "Focal Points in Latin American Astronomy", held in Tonantzintla, Mexico, Nov 9-13, 199

Astronomy and Astrophysics

Astronomy

Scientific paper

We report the discovery of an OB association containing Sk -67 105, the early O-type binary system exiting the HII region N 50 (DEM 193) in the LMC. Direct CCD imaging performed with the 2.15m telescope at CASLEO, San Juan, Argentina, in a 9 arcmin diameter area centered at the position of Sk -67 105, reveals a concentration of blue stars inside N 50. Colour-magnitude diagrams of the region suggest that an OB association is present, the early O-type binary system being its most luminous member. Moreover, we find Sk -67 105 to be located in a tight group of about ten stars inside a radius of ten arcseconds. We have also obtained optical spectra of the brightest OB members of the association.

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