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Massive unseen companions to hot faint underluminous stars from SDSS (MUCHFUSS) - Analysis of seven close subdwarf B binaries
S. Geier, P. F. L. Maxted, R. Napiwotzki +12
The project Massive Unseen Companions to Hot Faint Underluminous Stars from SDSS (MUCHFUSS) aims at finding hot subdwarf stars with massive compact companions like massive white dw…
Two planets orbiting the recently formed post-common envelope binary NN Serpentis
K. Beuermann, F. V. Hessman, S. Dreizler +10
Planets orbiting post-common envelope binaries provide fundamental information on planet formation and evolution. We searched for such planets in NN Ser ab, an eclipsing short-peri…
Orbital periods of cataclysmic variables identified by the SDSS. VIII. A slingshot prominence in SDSS J003941.06+005427.5?
John Southworth, T. R. Marsh, B. T. Gansicke +2
We present VLT spectroscopy and NTT photometry of the faint cataclysmic binary SDSS J003941.06+005427.5. This object shows triple-peaked H-alpha emission with all three peaks varia…
SDSS J0926+3624: The shortest period eclipsing binary star
C. M. Copperwheat, T. R. Marsh, S. P. Littlefair +12
With orbital periods of the order of tens of minutes or less, the AM Canum Venaticorum stars are ultracompact, hydrogen deficient binaries with the shortest periods of any binary s…
Orbital Period Variations in Eclipsing Post Common Envelope Binaries
S. G. Parsons, T. R. Marsh, C. M. Copperwheat +10
We present high speed ULTRACAM photometry of the eclipsing post common envelope binaries DE CVn, GK Vir, NN Ser, QS Vir, RR Cae, RX J2130.6+4710, SDSS 0110+1326 and SDSS 0303+0054…