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Kukarkin‐Parenago relationship, period gap, and cause of dwarf nova outbursts
Author(s) -
Richter G.A.,
Bräuer H.J.
Publication year - 1989
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.2113100602
Subject(s) - physics , astrophysics , period (music) , dwarf nova , orbital period , amplitude , nova (rocket) , white dwarf , stars , optics , aeronautics , acoustics , engineering
It is shown that it can be useful to incorporate the orbital period P as an additional parameter into the Kukarkin‐Parenago relationship. Then it turns out that the relationship splits into two, one holding for objects above and the other for objects below the well‐known and much‐discussed period gap between 2.2 and 2.8 hours A = ‐2.03 + 2.26 log C + 8.80 log P for P > 2.2 h A = 2.07 + 2.46 log C ‐ 3.68 log P for P > 2.8 h ( A amplitude (mag), C cycle length (d), P orbital period (h)). Future theories of the dwarf nova phenomenon and the origin of the period gap will have to deal with this.