Irradiation of Secondary Components and Enhanced Mass Outflow in Dwarf Novae during Outbursts

Details Irradiation of Secondary Components and Enhanced Mass Outflow in Dwarf Novae during Outbursts Irradiation of Secondary Components and Enhanced Mass Outflow in Dwarf Novae during Outbursts

Jun 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aca....54..181s&link_type=abstract

Acta Astronomica, v.54, pp.181-193, (2004).

Astronomy and Astrophysics

Astronomy

8

Accretion, Accretion Disks, Novae, Cataclysmic Variables, Stars: Dwarf Novae

Scientific paper

Model calculations describing the flow of material heated by irradiation into the shadow zone around L_1 are described. In dwarf novae with very short periods (P approx 1-2 hrs) the resulting enhancement in the mass outflow rate is very large: dot M/dot M_0 approx 10-30. In systems with periods just above the period gap (P approx 4 hrs) the enhancement is smaller: dot M/dot M_0 approx 2-6. In systems with longer periods (P approx 6 hrs), however, it turns out that the flow does not reach the vicinity of L_1 and, consequently, the enhancement is negligibly small. This means that irradiation induced enhanced mass outflow plays important role in SU UMa stars but is negligible in Z Cam stars.

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