2 papers
astro-ph.SR2011
The influence of binarity on dust obscuration events in the planetary nebula M 2-29 and its analogues
B. Miszalski, J. Mikołajewska, J. Köppen +8
The central star of the planetary nebula (CSPN) M 2-29 shows an extraordinary R Coronae Borealis-like fading event in its optical lightcurve. The only other CSPN to show these even…
astro-ph.SR2010
Herschel images of NGC 6720: H2 formation on dust grains
P. A. M. van Hoof, G. C. Van de Steene, M. J. Barlow +27
Herschel PACS and SPIRE images have been obtained of NGC 6720 (the Ring Nebula). This is an evolved planetary nebula with a central star that is currently on the cooling track, due…