191 citations · 828 across the 26 of their papers we have counts for
26 papers
Archives of Photographic PLates for Astronomical USE (APPLAUSE) Digitisation of astronomical plates and their integration into the International Virtual Observatory
Harry Enke, Taavi Tuvikene, Detlef Groote +2
The Archives of Photographic PLates for Astronomical USE (APPLAUSE) project is aimed at digitising astronomical photographic plates from three major German plate collections, makin…
Two candidate brown dwarf companions around core helium-burning stars
V. Schaffenroth, L. Classen, K. Nagel +4
Hot subdwarf stars of spectral type B (sdBs) are evolved, core helium-burning objects. The formation of those objects is puzzling, because the progenitor star has to lose almost it…
Orbital solutions of eight close sdB binaries and constraints on the nature of the unseen companions
S. Geier, R. H. Oestensen, U. Heber +9
The project Massive Unseen Companions to Hot Faint Underluminous Stars from SDSS (MUCHFUSS) aims at finding hot subdwarf stars (sdBs) with massive compact companions such as white…
Hot subdwarf stars in close-up view IV. Helium abundances and the He isotopic anomaly of subdwarf B star
S. Geier, U. Heber, H. Edelmann +5
Atmospheric parameters and helium abundances of 44 bright subdwarf B stars have been determined. More than half of our sample consists of newly discovered stars from the Edinburgh…
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…