119 citations · 674 across the 18 of their papers we have counts for
18 papers
Whole Earth Telescope Observations of the subdwarf B star KPD 1930+2752: A rich, short period pulsator in a close binary
M. D. Reed, S. L. Harms, S. Poindexter +58
KPD 1930+2752 is a short-period pulsating subdwarf B (sdB) star. It is also an ellipsoidal variable with a known binary period just over two hours. The companion is most likely a w…
A survey for pulsating subdwarf B stars with the Nordic Optical Telescope
R. H. Ostensen, R. Oreiro, J. -E. Solheim +7
A search programme for pulsating subdwarf B stars was conducted with the Nordic Optical Telescope on La Palma over 59 nights between 1999 and 2009. The purpose of the programme was…
The astrophysics of ultra-compact binaries
G. Nelemans, M. Wood, P. Groot +24
This white paper briefly describes the astrophysics of ultra-compact binaries, with emphasis of the challenges and opportunities in the next decade.
The pulsation modes of the pre-white dwarf PG 1159-035
J. E. S. Costa, S. O. Kepler, D. E. Winget +74
PG 1159-035, a pre-white dwarf with T_eff=140,000 K, is the prototype of both two classes: the PG1159 spectroscopic class and the DOV pulsating class. Previous studies of PG 1159-0…
Abell 43: Longest period Planetary Nebula Nucleus variable
J. -E. Solheim, G. Vauclair, A. S. Mukadam +2
Based on 24h high speed photometry of the hybrid PG 1159 star Abell 43, we have detected 6 sighificant pulsations with periods between 2380 s and 6075 s. A short (4h) run on the al…
The O-C diagram of the subdwarf B pulsating star HS2201+2610: detection of a giant planet?
R. Silvotti, S. Schuh, R. Janulis +9
In this article we present the O-C diagram of the hot subdwarf B pulsating star HS2201+2610 after seven years of observations. A secular increase of the main pulsation period, Pdot…