Mapping the peculiar binary GP Com

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dc.creatorMorales-Rueda, L.
dc.creatorMarsh, T. R.
dc.creatorNorth, R. C.
dc.date2000-08-29
dc.date.accessioned2026-07-07T01:55:09Z
dc.date.available2026-07-07T01:55:09Z
dc.descriptionWe present high resolution spectra of the AM CVn helium binary GP Com at two different wavelength ranges. The spectra show the same flaring behaviour observed in previous UV and optical data. We find that the central spike contributes to the flare spectra indicating that its origin is probably the compact object. We also detect that the central spike moves with orbital phase following an S-wave pattern. The radial velocity semiamplitude of the S-wave is \~10 km/s which indicates its origin is near the centre of mass of the system, which in this case lies very close to the white dwarf. The Stark effect seems to affect significantly the central spike of some of the lines suggesting that it forms in a high electron density region. This again favours the idea that the central spike originates in the white dwarf. We present Doppler maps obtained for the emission lines which show three clear emission regions.
dc.description6 pages, 3 postscript figures. To appear in Proceedings of Astro-Tomography Workshop, Brussels, July 2000, Eds. H. Boffin, D. Steeghs, Springer-Verlag Lecture Notes in Physics
dc.identifierhttps://arxiv.org/abs/astro-ph/0008450
dc.identifierhttp://arxiv.org/abs/astro-ph/0008450
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/1558
dc.subjectAstrophysics
dc.titleMapping the peculiar binary GP Com
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