Astrophysics and Space Science

, Volume 130, Issue 1–2, pp 3–13 | Cite as

Systematics of Dwarf Novae

  • B. Warner
Introductory Review


From about 30 Dwarf Novae with the best determined distances the following relationships are found.
  1. (i)

    a tight correlation between absolute magnitude at maximum light, Mv(max), and orbital period, P.

  2. (ii)

    a correlation between Mv(min) and P showing wide scatter.

  3. (iii)

    a correlation between Mv(mean), the mean absolute magnitude averaged over normal outbursts, and P, again with wide scatter. The scatter is shown to correlate strongly with ouburst timescale Tn.

  4. (iv)

    a strong correlation between range, Mv(min)-Mv(max), and Tn (the Kukarkin-Parenago relationship).

  5. (v)

    a strong correlation between range Mv(mean)-Mv(max), and both Tn and P.


This final correlation is interpreted in terms of the disc instability model of dwarf novae and successfully predicts the observed width of outburst versus P relationship.


Strong Correlation Orbital Period Wide Scatter Absolute Magnitude Tight Correlation 


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Copyright information

© D. Reidel Publishing Company 1987

Authors and Affiliations

  • B. Warner
    • 1
    • 2
  1. 1.Department of Physics and AstronomyDartmouth CollegeUSA
  2. 2.Department of AstronomyUniversity of Cape TownRondeboschS. Africa

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