346 citations · 4.9k across the 122 of their papers we have counts for
11 papers · 1 filter
The MUCHFUSS project - Searching for the most massive companions to hot subdwarf stars in close binaries and finding the least massive ones
S. Geier, V. Schaffenroth, H. Hirsch +12
The project Massive Unseen Companions to Hot Faint Underluminous Stars from SDSS (MUCHFUSS) aims at finding hot subdwarf stars with massive compact companions (massive white dwarfs…
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…
Runaway and hypervelocity stars. The supernova connection
Ralf Napiwotzki, Manuel D. V. Silva
We present an investigation of the known sample of runaway stars. The orbits of these stars are traced back to their origin in the Galactic disc. The velocity distribution of these…
New short period stellar pulsators at large Galactocentric distances
Gavin Ramsay, Ralf Napiwotzki, Thomas Barclay +3
We report the discovery of 31 blue, short period, pulsators made using data taken as part of the Rapid Temporal Survey (RATS). We find they have periods between 51-83 mins and full…
Binaries discovered by the MUCHFUSS project SDSS J08205+0008 - An eclipsing subdwarf B binary with brown dwarf companion
S. Geier, V. Schaffenroth, H. Drechsel +11
Hot subdwarf B stars (sdBs) are extreme horizontal branch stars believed to originate from close binary evolution. Indeed about half of the known sdB stars are found in close binar…
Improved prospects for the detection of new Large Magellanic Cloud planetary nebulae
Brent Miszalski, Ralf Napiwotzki, Maria-Rosa L. Cioni +1
The Large Magellanic Cloud (LMC) contains the nearest large extragalactic population of planetary nebulae (PNe). A shallow viewing angle and low interstellar reddening towards the…