On the Photometric Properties of Superhumps in Dwarf Novae of the SU UMa Type

• Autorzy: Smak J.
• Języki publikacji: EN

Abstrakty

EN

It is shown that in order to account for the observed superhump amplitudes: A_V≈0.3 mag near superoutburst maximum and A_V≈0.2 mag at mid-outburst, the temperature of the superhump source must be - respectively - T_sh≈25 000-30 000 K and T_sh≈15 000-20 000 K. The resulting bolometric amplitudes of the superhump turn out roughly the same as the visual amplitudes. Accordingly, the excess bolometric luminosity contributed by the superhump source is L_sh≈3×10³⁴ erg/s near superoutburst maximum, and ≈4×10³³ erg/s at mid-outburst. This imposes severe constraints on superhump models.

Słowa kluczowe

EN

accretion; accretion disks; novae; cataclysmic variables; stars: dvarf novae

• Wydawca: Copernicus Foundation for Polish Astronomy
• Czasopismo: Acta Astronomica
• Rocznik: 2005
• Tom: Vol. 55, No. 4
• Strony: 367--374
• Opis fizyczny: Bibliogr. 17 poz., rys., wykr.

Twórcy

autor

Smak J.

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

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