121 citations · 426 across the 12 of their papers we have counts for
9 papers · 1 filter
A Model of the Pulsating Extremely Low-Mass White Dwarf Precursor WASP 0247-25B
Alina G. Istrate, Gilles Fontaine, Christian Heuser
We present an analysis of the evolutionary and pulsation properties of the extremely low-mass white dwarf precursor (B) component of the double-lined eclipsing system WASP 0247-25.…
The catalogue of radial velocity variable hot subluminous stars from the MUCHFUSS project
S. Geier, T. Kupfer, U. Heber +13
The project Massive Unseen Companions to Hot Faint Underluminous Stars from SDSS (MUCHFUSS) aims to find sdBs with compact companions like massive white dwarfs, neutron stars or bl…
The population of white dwarf binaries with hot subdwarf companions
S. Geier, T. Kupfer, U. Heber +7
Hot subdwarfs (sdBs) are core helium-burning stars, which lost almost their entire hydrogen envelope in the red-giant phase. Since a high fraction of those stars are in close binar…
Hot subdwarf binaries from the MUCHFUSS project - Analysis of 12 new systems and a study of the short-period binary population
T. Kupfer, S. Geier, U. Heber +6
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…
An ancient F-type subdwarf from the halo crossing the Galactic plane
R. -D. Scholz, U. Heber, C. Heuser +3
AIMS: We selected the bluest object, WISE~J07252351, from Luhman's new high proper motion (HPM) survey based on observations with the Wide-field Infrared Survey Explorer (WISE)…
Binaries discovered by the MUCHFUSS project: SDSS J162256.66473051.1 - An eclipsing subdwarf B binary with a brown dwarf companion
V. Schaffenroth, S. Geier, U. Heber +5
Hot subdwarf B stars (sdBs) are core helium-burning stars located on the extreme horizontal branch. About half of the known sdB stars are found in close binaries. Their short orbit…
Finding compact hot subdwarf binaries in the Galactic disc
T. Kupfer, S. Geier, A. Faye McLeod +15
We started a new project which aims to find compact hot subdwarf binaries at low Galactic latitudes. Targets are selected from several photometric surveys and a spectroscopic follo…
The subdwarf B star SB 290 - A fast rotator on the extreme horizontal branch
S. Geier, U. Heber, C. Heuser +3
Hot subdwarf B stars (sdBs) are evolved core helium-burning stars with very thin hydrogen envelopes. In order to form an sdB, the progenitor has to lose almost all of its hydrogen…
Low-mass stellar and substellar companions to sdB stars
S. Geier, L. Classen, P. Bruenner +9
It has been suggested that besides stellar companions, substellar objects in close orbits may be able to trigger mass loss in a common envelope phase and form hot subdwarfs. In an…