On the Eclipsing Cataclysmic Variable Star HBHA 4705-03

• Autorzy: Rutkowski A. , Ak T. , Marsh T. R. , Eker Z.
• Języki publikacji: EN

Abstrakty

EN

We present observations and analysis of a new eclipsing binary HBHA 4705-03. Using decomposition of the light curve into accretion disk and hot spot components, we estimated photometrically the mass ratio of the studied system to be q=0.62±0.07. Modeling of the system yields the following fundamental parameters: white dwarf mass M₁=(0.8±0.2) M_sun, secondary mass M₂=(0.497±0.05) M_sun, orbital radius a=1.418 R_sun, orbital inclination i=(81.°58±0.°5), accretion disk radius r_d/a=0.366±0.002, and accretion rate M=(2.5±2)x10¹⁸ [g/s] (3×10^-8 M_sun/yr). Power spectrum analysis revealed a set of possible low-period Quasi Periodic Oscillations centered at the frequencies f₁=0.00076 Hz, f₂=0.00048 Hz and f₃=0.00036 Hz. The system B-V=0.04 mag corresponds to a dwarf nova color during an outburst. The light curves of HBHA 4705-03 suggest that it is a nova-like variable star.

Słowa kluczowe

EN

accretion; accretion disks; novae; cataclysmic variables; stars: dwarf novae; stars: oscillations; stars: individual: HBHA 4705-03; stars: individual: 1RXS J221653.0+464804

• Wydawca: Copernicus Foundation for Polish Astronomy
• Czasopismo: Acta Astronomica
• Rocznik: 2013
• Tom: Vol. 63, No. 2
• Strony: 225--238
• Opis fizyczny: Bibliogr. 24 poz., rys., wykr.

Twórcy

autor

Rutkowski A.

• stronomical Observatory, Jagiellonian University, ul. Orla 171, 30-244 Kraków, Poland

autor

Ak T.

• Istanbul University, Faculty of Sciences, Department of Astronomy and Space Sciences, 34119 University, Istanbul, Turkey

autor

Marsh T. R.

• University of Warwick, Department of Physics, Coventry, CV4 7AL, UK

autor

Eker Z.

• Akdeniz University, Faculty of Science, Department of Astronomy and Space Technologies, 07058 Akdeniz University Campus, Antalya, Turkey

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