A slitless spectroscopic survey for H alpha emission-line objects in SMC clusters
Author(s): Martayan, C.; Baade, D.; Fabregat, J. Source: ASTRONOMY & ASTROPHYSICS Volume: 509 DOI: 10.1051/0004-6361/200911672 Published: JAN 2010 Context. A fair fraction of all single early-type stars display emission lines well before their supergiant...