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Astron. Astrophys. 346, L73-L75 (1999)

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Letter to the Editor

Discovery of metal line emission from the Red star in IP Peg during outburst maximum

E. Harlaftis *

Astronomical Institute, National Observatory of Athens, Lofos Nymfon, P.O. Box 20048, GR-11810 Athens, Greece (ehh@astro.noa.gr)

Received 6 April 1999 / Accepted 18 May 1999


Observations of the eclipsing dwarf nova IP Peg during outburst reveal metal lines in emission, such as Mg II 4481 Å. Analysis using Doppler tomography locates emission of helium and metal lines on the inner Roche lobe of the secondary star. Such multi-line Roche-lobe imaging presents a new tool in mapping the red star's ionization structure.

Key words: stars: binaries: close – accretion, accretion disks – stars: individual: IP Peg – stars: novae, cataclysmic variables

* Visiting Scientist: School of Physics and Astronomy, University of St. Andrews, KY16 9SS, UK

Send offprint requests to: E. Harlaftis

© European Southern Observatory (ESO) 1999

Online publication: June 17, 1999