Artículos de revistas
MULTILINE DOPPLER IMAGING OF MR SER IN HIGH STATE
Fecha
2009Registro en:
ASTRONOMICAL JOURNAL, v.137, n.1, p.296-303, 2009
0004-6256
10.1088/0004-6256/137/1/296
Autor
DIAZ, M. P.
CIESLINSKI, D.
Institución
Resumen
Doppler images in Balmer, He I, He II and C II lines, and simultaneous I-band photometry of the polar MR Ser are presented and analyzed. The Balmer and Helium Doppler tomograms, of this bright polar at high mass transfer state show the emission from the accretion flow and the heated surface of the companion star. As a result of a comparison between the Doppler tomograms, the ionization structure of the flow could be constrained. The highest ionization region was found in the vicinity of the magnetospheric radius. Photoionization modeling of the accretion column indicates that the Balmer and Helium emission line production in this system can be explained only by the central soft X-ray illumination. The orbital ephemeris of MR Ser has been revised.