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Astron. Astrophys. 364, 191-198 (2000)

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A study of RW Ursae Minoris shell

H.H. Esenoglu 1, A.T. Saygac 1, A. Bianchini 2, A. Retter 3, M.T. Özkan 4 and M. Altan 5

1 University of Istanbul, Faculty of Science, Department of Astronomy and Space Sciences, 34452 University-Istanbul, Turkey (esenoglu@istanbul.edu.tr)
2 University of Padova, Department of Astronomy, Italy
3 Keele University, Physics Department, Staffordshire, ST5 5BG, UK
4 Istanbul University Observatory Research and Application Center, 34452 University-Istanbul, Turkey
5 Anadolu University, Satellite and Space Sciences Research Institute, Muttalip, Eskisehir, Turkey

Received 11 July 2000 / Accepted 5 September 2000


We find an expansion parallax for the slow nova RW UMi (Nova Ursae Minoris 1956). A narrow-band [FORMULA] image shows that the diameter of the nova shell in 1995 was [FORMULA] arcsec. We derive a distance of [FORMULA] pc, and an absolute magnitude at maximum of [FORMULA] which are consistent with previous estimates for the nova. We also revised known relations between various parameters of nova systems.

Key words: stars: distances – stars: individual: Nova Ursae Minoris 1956 – stars: individual: RW UMi – stars: novae, cataclysmic variables

Send offprint requests to: H.H. Esenoglu

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© European Southern Observatory (ESO) 2000

Online publication: December 15, 2000