Summary: HEAD 2000, November 2000
Session 42. Stars and Stellar Coronae
Display, Friday, November 10, 2000, 8:00am­6:00pm, Bora Bora Ballroom
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[42.01] High­Resolution X­Ray Spectroscopy of Zeta Puppis and
Eta Carinae with the RGS on XMM
M. A. Leutenegger (Columbia), M. Audard (PSI), E. Behar (Columbia), A. J. den Boggende (SRON), A.
C. Brinkman (SRON), G. Branduardi­Raymont (MSSL), J. Cottam (Columbia), C. Erd (ESTEC), C.
Ferringo (SRON), M. Guedel (PSI), J. W. den Herder (SRON), J. S. Kaastra (SRON), S. M. Kahn
(Columbia), J. McGee (MSSL), R. Mewe (SRON), F. B. S. Paerels (Columbia), R. Pallavicini (OAPA), J.
R. Peterson (Columbia), A. P. Rasmussen (Columbia), G. Raux (Liege), M. Sako (Columbia), T. Tamura
(SRON), I. Sakelliou (MSSL), K. Thomsen (SRON), C. de Vries (SRON)
We present high­resolution X­ray spectra of massive stars Zeta Puppis and Eta Carinae obtained with
the Reflection Grating Spectrometer (RGS) onboard the XMM/Newton observatory. The spectrum of
Zeta Puppis has many emission lines, including bright, broad hydrogenic and helium­like lines from
oxygen and nitrogen. Analysis of these lines indicates a plasma density of at least 10 10 \rm{cm} ­3 . The
spectrum of Eta Carinae is dominated by the bright hydrogenic nitrogen line. We will present the
analysis of the spectra and discuss implications.
The author(s) of this abstract have provided an email address for comments about the abstract:
maurice@astro.columbia.edu

Source: Audard, Marc - INTEGRAL Science Data Centre & Observatory of Geneva, Université de Genève
Guedel, Manuel - Institut für Astronomie, Universität Wien

Collections: Physics