190 citations · 284 across the 7 of their papers we have counts for
5 papers · 1 filter
The planetary nebula Abell 48 and its [WN] nucleus
David J. Frew, Ivan S. Bojicic, Q. A. Parker +6
We have conducted a detailed multi-wavelength study of the peculiar nebula Abell 48 and its central star. We classify the nucleus as a helium-rich, hydrogen-deficient star of type…
Planetary nebulae : getting closer to an unbiased binary fraction
D. Douchin, O. De Marco, G. H. Jacoby +5
Why 80% of planetary nebulae are not spherical is not yet understood. The Binary Hypothesis states that a companion to the progenitor of the central star of a planetary nebula is r…
Testing the binary hypothesis for the formation and shaping of planetary nebulae
D. Douchin, O. De Marco, G. H. Jacoby +5
There is no quantitative theory to explain why a high 80% of all planetary nebulae are non-spherical. The Binary Hypothesis states that a companion to the progenitor of a central s…
Estimating the binary fraction of planetary nebulae central stars
D. Douchin, O. De Marco, D. J. Frew +10
During the past 20 years, the idea that non-spherical planetary nebulae (PN) may need a binary or planetary interaction to be shaped was discussed by various authors. It is now gen…
Binary microlensing event OGLE-2009-BLG-020 gives a verifiable mass, distance and orbit predictions
J. Skowron, A. Udalski, A. Gould +99
We present the first example of binary microlensing for which the parameter measurements can be verified (or contradicted) by future Doppler observations. This test is made possibl…