Author/Authors :
Jean-Marc Gagné، نويسنده , , Garrett Fehon، نويسنده , , Michael R. Savoy، نويسنده , , David H. Cohen، نويسنده , , Leisa K. Townsley، نويسنده , , Patrick S. Broos، نويسنده , , Matthew S. Povich، نويسنده , , Kazunori Ishibashi and Michael F. Corcoran، نويسنده , , Nolan R. Walborn، نويسنده , , Anthony F.J. Moffat، نويسنده , , Yael Naze، نويسنده , , Lidia M. Oskinova، نويسنده ,
Abstract :
We have combined 22 deep Chandra ACIS-I pointings to map over one square degree of the Carina complex. Our x-ray survey detects 69 of 70 known O-type stars and 61 of 130 known early B stars. The majority of single O stars display soft X-ray spectra and have a mean log LX /Lbol ≈ −7.5 suggesting shocks embedded in the O-star winds. Over OB stars show unusually high X-ray luminosities, high shock temperatures or time variability, not predicted for embedded wind shocks.
Keywords :
stars: early-type , X-rays: binaries , X-rays: stars , stars: pre–main-sequence
