On the Mass Ratio of TU Men

• Autorzy: Smak J. I.
• Języki publikacji: EN

Abstrakty

EN

Radial velocities of TU Men measured from peaks of the emission lines are re-analyzed within the three-body approximation. The resulting crude estimate of the mass ratio is q=M₂/M₁=0.5±0.2. Using the mass of the secondary estimated from the M₂-P relation we obtain an independent lower limit q>0.41±0.08. These estimates exclude the possibility of superhumps being due to the tidal instability involving the 3:1 resonance which requires q<q_crit=0.25. The common belief that q_crit could be as high as q=0.33 is critically re-examined. It is shown that the results of numerical simulations, which form the basis of this belief, do not apply to situations encountered in the case of the observed superhumps.

Słowa kluczowe

EN

accretion; accretion disks; instabilities; binaries: close; novae; cataclysmic variables; Stars: individual: TU Men

• Wydawca: Copernicus Foundation for Polish Astronomy
• Czasopismo: Acta Astronomica
• Rocznik: 2006
• Tom: Vol. 56, No. 3
• Strony: 277--282
• Opis fizyczny: Bibliogr. 15 poz., tab., wykr.

Twórcy

autor

Smak J. I.

• N. Copernicus Astronomical Center, Polish Academy of Sciences, ul. Bartycka 18, 00-716 Warsaw, Poland

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