Doppler Tomography of Intermediate Polar Spin Cycles | Zendy

C. Hellier | Zendy

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Doppler Tomography of Intermediate Polar Spin Cycles

Author(s) -

C. Hellier

Publication year - 1999

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/307345

Subject(s) - line (geometry) , intermediate polar , polar , tomography , white dwarf , physics , doppler effect , spin (aerodynamics) , phase (matter) , astrophysics , flux (metallurgy) , astronomy , stars , optics , materials science , geometry , mathematics , quantum mechanics , thermodynamics , metallurgy

I collect emission line profiles for seven intermediate polars,phase-resolved over the spin cycles. I then present the first systematicapplication of Doppler tomography to the spin cycles, with the aim ofinvestigating whether spin-cycle tomography is a useful diagnostic tool. Fourstars show line emission from material falling onto both magnetic poles of thewhite dwarf, but three others show line emission from only the upper pole.Tomography can map the extent and shape of the line-emitting accretioncurtains, but it can also give misleading results if the line flux changessignificantly over the spin cycle.

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