The interaction of nova shells with the interstellar medium |
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| Authors: | H W Duerbeck |
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| Institution: | (1) Astronomisches Institut, Universität Münster, Münster, Germany |
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| Abstract: | Decelerations of the shells around the novae V603 Aq1, V476 Cyg, DQ Her and GK Per were determined from photographs and recent CCD observations. The deceleration is larger for higher expansion velocities, the mean half-lifetime, after which the expansion velocity has dropped to half its initial value, is 75 years.Based on observations obtained at the European Southern Observatory, La Silla, Chile, and at the Centro Astronomico Hispano-Aleman Calar Alto, operated by the Max-Planck-Institut für Astronomie, HeidelbergPaper presented at the IAU Colloquium No. 93 on  Cataclysmic Variables. Recent Multi-Frequency Observations and Theoretical Developments , held at Dr. Remeis-Sternwarte Bamberg, F.R.G., 16–19 June, 1986. |
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