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PNe with binary central stars David Jones The contribution of Wide-Field surveys to the search for planetary nebulae with binary central stars David Jones Instituto de Astrofı́sica de Canarias Milky Way Astrophysics from Wide-Field Surveys 1 / 11 Aspherical planetary nebulae PNe with binary central stars David Jones Rapidly rotating stars? Magnetic fields? BINARIES! 2 / 11 The OGLE effect PNe with binary central stars David Jones 3 / 11 Morphologies PNe with binary central stars David Jones 4 / 11 IPHAS finds the morphologies IPHASX J194359.5+170901 PNe with binary central stars David Jones 5 / 11 We find the binaries! Corradi et al. (2011) PNe with binary central stars David Jones 6 / 11 The Necklace IPHASX J194359.5+170901 PNe with binary central stars David Jones 7 / 11 Multiple epochs? IPHASX J211420.0+434136 PNe with binary central stars David Jones 8 / 11 Binary! Corradi et al. (2014) PNe with binary central stars David Jones 9 / 11 So far, so good, so what? PNe with binary central stars David Jones Finds candidates with typical morphologies Even finds variables Distances Flux calibrated images can be used to estimate ionised mass Binaries tend to have very low ionised mass... More nova-like? Could they be formed from destroyed planets? ⇒Real planetary nebulae? 10 / 11 Wider implications or: How I Learned to Stop Worrying and Love Planetary Nebulae PNe with binary central stars David Jones Understanding the common envelope phase Novae, LMXBs, CVs and... SN Type Ia! More double degenerates than expected Only known M > MC DD that will merge in < Hubble time (Santander-Garcı́a et al. 2015, Nature, 519, 63) Circumbinary planets Abundance discrepancies 11 / 11
