The Galactic O-star spectroscopic survey (GOSSS)

MAÍZ APELLÁNIZ, J.; SOTA, A.; WALBORN, N.; ALFARO, E.; BARBÁ, R.; MORRELL, N. I.; GAMEN, R. C.; ARIAS, J.

Madrid

Encuentro; IX Scientific Meeting of the Spanish Astronomical Society (SEA); 2010

Spanish Astronomical Society

We present a massive spectroscopic survey of Galactic O stars, GOSSS, based on new, high signal-to-noise ratio, R about 2500 blue-violet digital observations from both hemispheres. The sample size and selection criteria; the relationship between GOSSS, the Galactic O-Star Catalog (GOSC), and three sister surveys (OWN, IACOB, and Lucky Imaging); the current status; and our plans for the future are discussed. We also show some of our first results, which include the new Ofc category, two new examples of Of?p stars, a new atlas for O stars, and the introduction of the O9.7 type for luminosity classes III to V. Finally, our scientific objectives are discussed.