On the nova rate in the Galaxy

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Novae, Galaxy: Stellar Content, X-Rays: Stars

Scientific paper

The nova rate in the Galaxy is determined, using the current estimates of nova rates in extragalactic systems as calibrators. A value of =~20 novae/yr is obtained. This is smaller by a factor 3-4 than some of the previous estimates. The comparison of the derived value with the `observed' nova rate in the Galaxy of =~4 novae/yr, shows that nova surveys in our Galaxy are strongly affected by incompleteness. The frequency of occurrence of classical novae that are supersoft X-ray emitters, like GQ Mus, is also estimated.

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