Publications (166)
MUCHFUSS - Massive Unseen Companions to Hot Faint Underluminous Stars from SDSS
S. Geier, V. Schaffenroth, H. Hirsch +15
Radial velocity measurements of Subdwarf B stars
C. M. Copperwheat, L. Morales-Rueda, T. R. Marsh +2
ORFEUS II echelle spectra: deuterium and molecular hydrogen in the ISM towards BD +39 3226
H. Bluhm, O. Marggraf, K. S. de Boer +2
Abundances of UV bright stars in globular clusters. I. ROA 5701 in omega Centauri and Barnard 29 in M 13
S. Moehler, U. Heber, M. Lemke +1
Masses and Gravities of Blue Horizontal Branch Stars Revisited
U. Heber, S. Moehler, I. N. Reid
Improved helium line formation for EHe stars
N. Przybilla, K. Butler, U. Heber +1
Orbital properties of an unusually low-mass sdB star in a close binary system with a white dwarf
R. Silvotti, R. H. Ãstensen, S. Bloemen +17
Photometric and Spectroscopic Monitoring of the sdBV star PG 1605+072: The Multi-Site Spectroscopic Telescope (MSST) Project
U. Heber, S. Dreizler, S. L. Schuh +2
Binaries discovered by the SPY survey VI. Discovery of a low mass companion to the hot subluminous planetary nebula central star EGB\,5 - A recently ejected common envelope?
S. Geier, R. Napiwotzki, U. Heber +1
Model Spectra of Hot Subdwarfs for the Gaia Mission
L. Hindson, R. Napiwotzki, U. Heber +1
The fast rotating, low gravity subdwarf B star EC 22081-1916 - Remnant of a common envelope merger event
S. Geier, L. Classen, U. Heber
RV variable, hot post-AGB stars from the MUCHFUSS project - Classification, atmospheric parameters, formation scenarios
N. Reindl, S. Geier, T. Kupfer +5
Search for progenitors of supnernovae type Ia with SPY
R. Napiwotzki, N. Christlieb, H. Drechsel +13
Radial Velocity search for substellar companions to sdB stars
S. J. O'Toole, U. Heber, S. Geier +2
Tidal synchronization of the subdwarf B binary PG 0101+039
S. Geier, S. Nesslinger, U. Heber +3
Photometry of four binary subdwarf B stars and the nature of their unseen companion stars
P. F. L. Maxted, T. R. Marsh, U. Heber +3
A survey for pulsating subdwarf B stars with the Nordic Optical Telescope
R. H. Ostensen, R. Oreiro, J. -E. Solheim +7
Binaries discovered by the SPY project. III. HE2209-1444: a massive, short period double degenerate
C. A. Karl, R. Napiwotzki, G. Nelemans +4
Spectral analysis of multi mode pulsating sdB stars II. Feige 48, KPD 2109+4401 and PG 1219+534
U. Heber, I. N. Reid, K. Werner
PG1018-047: the longest period subdwarf B binary
J. Deca, T. R. Marsh, R. H. Ãstensen +7
The UV-Excess Survey of the Northern Galactic Plane (UVEX)
Paul J. Groot, K. Verbeek, R. Greimel +41
Towards Asteroseismology of PG1605+072
A. Tillich, U. Heber, S. J. O'Toole +2
Close binary EHB stars from SPY
R. Napiwotzki, C. A. Karl, T. Lisker +5
The MUCHFUSS photometric campaign
V. Schaffenroth, S. Geier, U. Heber +4
Rotational properties of single and wide binary subdwarf B stars
S. Geier, U. Heber, H. Edelmann +2
3D kinematics of white dwarfs from the SPY project
E. -M. Pauli, R. Napiwotzki, M. Altmann +3
Search for double degenerate progenitors of supernovae type Ia with SPY
R. Napiwotzki, H. Drechsel, U. Heber +13
Spectral analysis of the multi mode pulsating subluminous B star PG1605+072
U. Heber, I. N. Reid, K. Werner
The population of white dwarf binaries with hot subdwarf companions
S. Geier, T. Kupfer, U. Heber +7
The MUCHFUSS project - Searching for hot subdwarf binaries with massive unseen companions: Survey, target selection and atmospheric parameters
S. Geier, H. Hirsch, A. Tillich +9
KIC7668647: a 14 day beaming sdB+WD binary with a pulsating subdwarf
J. H. Telting, A. S. Baran, P. Nemeth +6
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
Spectral Types and Masses of White Dwarfs in Globular Clusters
S. Moehler, D. Koester, M. Zoccali +4
Double degenerates and progenitors of supernovae type Ia
R. Napiwotzki, L. Yungelson, G. Nelemans +12
PSR J1024-0719: A Millisecond Pulsar in an Unusual Long-Period Orbit
D. L. Kaplan, T. Kupfer, D. J. Nice +32
Discovery of magnetic fields in hot subdwarfs
S. J. O'Toole, S. Jordan, S. Friedrich +1
Resolving subdwarf B stars in binaries by HST imaging
U. Heber, S. Moehler, R. Napiwotzki +2
The hot subdwarf B + white dwarf binary KPD 1930+2752 - a Supernova Type Ia progenitor candidate
S. Geier, S. Nesslinger, U. Heber +3
Finding compact hot subdwarf binaries in the Galactic disc
T. Kupfer, S. Geier, A. Faye McLeod +15
Hot HB stars in globular clusters - Physical parameters and consequences for theory. V. Radiative levitation versus helium mixing
S. Moehler, A. V. Sweigart, W. B. Landsman +1
The Hyper-MUCHFUSS project: probing the Galactic halo with sdB stars
A. Tillich, U. Heber, S. Geier +7
BUSCA: A Telescope Instrumentation for Simultaneous Imaging in 4 Optical Bands
K. Reif, K. Bagschik, K. S. de Boer +7
New HW Virginis Systems from the MUCHFUSS Project
V. Schaffenroth, S. Geier, I. Barbu-Barna +3
A progenitor binary and an ejected mass donor remnant of faint type Ia supernovae
S. Geier, T. R. Marsh, B. Wang +17
SDSS J013655.91+242546.0 - an A-type hyper-velocity star from the outskirts of the Galaxy
A. Tillich, N. Przybilla, R. -D. Scholz +1
A new bright eclipsing hot subdwarf binary from the ASAS and SuperWASP surveys
V. Schaffenroth, S. Geier, H. Drechsel +5
Spectral analysis of the sdO K 648, the exciting star of the planetary nebula Ps 1 in the globular cluster M 15 (NGC 7078)
T. Rauch, U. Heber, K. Werner
Hot subdwarfs in the Galactic halo - Tracers of prominent events in late stellar evolution
S. Geier, T. Kupfer, V. Schaffenroth +2
Binaries discovered by the SPY project V. GD 687 - a massive double degenerate binary progenitor that will merge within a Hubble time
S. Geier, U. Heber, T. Kupfer +1
The Unseen Population of F to K-type Companions to Hot Subdwarf Stars
J. Girven, D. Steeghs, U. Heber +6
Observations of the extreme runaway HD271791: nucleosynthesis in a core-collapse supernova
V. Schaffenroth, N. Przybilla, K. Butler +2
Quantitative spectral analysis of the sdB star HD 188112: a helium-core white dwarf progenitor
M. Latour, U. Heber, A. Irrgang +7
First Kepler results on compact pulsators I. Survey target selection and the first pulsators
R. H. Ãstensen, R. Silvotti, S. Charpinet +25
Subdwarf O Stars from SDSS and SPY
H. A. Hirsch, U. Heber, S. J. O'Toole
First Kepler results on compact pulsators VI. Targets in the final half of the survey phase
R. H. Ãstensen, R. Silvotti, S. Charpinet +29
Discovery of the closest hot subdwarf binary with white dwarf companion
S. Geier, T. R. Marsh, B. H. Dunlap +13
Search for double degenerate progenitors of supernovae type Ia with SPY
R. Napiwotzki, N. Christlieb, H. Drechsel +13
HS0702+6043: A star showing both short-period p-mode and long-period g-mode oscillations
S. Schuh, J. Huber, S. Dreizler +4
On the naming convention used for multiple star systems and extrasolar planets
F. V. Hessman, V. S. Dhillon, D. E. Winget +6
3D kinematics of white dwarfs from the SPY project II
E. -M. Pauli, R. Napiwotzki, U. Heber +2
The peculiar sdB NGC6121-V46: A low-mass double degenerate ellipsoidal variable in a globular cluster
S. J. O'Toole, R. Napiwotzki, U. Heber +4
The stellar content of the Hamburg/ESO survey. I. Automated selection of DA white dwarfs
N. Christlieb, L. Wisotzki, D. Reimers +3
Hot subdwarf stars and their connection to thermonuclear supernovae
S. Geier, T. Kupfer, E. Ziegerer +4
The MSST Campaign: II.Effective temperature and gravity variations in the multi-periodic pulsating subdwarf B star PG1605+072
A. Tillich, U. Heber, S. J. O'Toole +2
The binary fraction of extreme horizontal branch stars
P. F. L. Maxted, U. Heber, T. R. Marsh +1
Hot subdwarf stars in close-up view IV. Helium abundances and the $^3$He isotopic anomaly of subdwarf B star
S. Geier, U. Heber, H. Edelmann +5
Multi-wavelength photometric variation of PG1605+072
S. Schuh, S. Dreizler, U. Heber +8
Time resolved spectroscopy of the multiperiodic pulsating subdwarf B star PG1605+072
A. Tillich, U. Heber, S. J. O'Toole
Helium abundances and the helium isotope anomaly of sdB stars
S. Geier, U. Heber, H. Edelmann +5
Hot subdwarf stars in close-up view - II. Rotational properties of single and wide binary subdwarf B stars
S. Geier, U. Heber
Binaries discovered by the MUCHFUSS project: SDSS J162256.66$+$473051.1 - An eclipsing subdwarf B binary with a brown dwarf companion
V. Schaffenroth, S. Geier, U. Heber +5
Orbital solutions of eight close sdB binaries and constraints on the nature of the unseen companions
S. Geier, R. H. Oestensen, U. Heber +9
Radial Velocity Survey of Low-Mass Companions to sdB Stars
L. Classen, S. Geier, U. Heber +1
The MultiSite Spectroscopic Telescope campaign: 2m spectroscopy of the V361 Hya variable PG1605+072
S. J. O'Toole, U. Heber, C. S. Jeffery +10
Spectroscopic Analysis of subluminous B Stars in Binaries with compact Companions
S. Geier, C. Karl, H. Edelmann +2
3D-Kinematics of White Dwarfs from the SPY-Project
R. Richter, U. Heber, R. Napiwotzki
Candidate hypervelocity stars of spectral type G and K revisited
E. Ziegerer, M. Volkert, U. Heber +3
EL CVn-type binaries - Discovery of 17 helium white dwarf precursors in bright eclipsing binary star systems
P. F. L. Maxted, S. Bloemen, U. Heber +21
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
Time resolved spectroscopy of KPD1930+2752
S. Geier, U. Heber, N. Przybilla +1
Discovery of a stripped red giant core in a bright eclipsing binary system
P. F. L. Maxted, D. R. Anderson, M. R. Burleigh +11
3D-Kinematics of White Dwarfs from the SPY-Project
E-M. Pauli, U. Heber, R. Napiwotzki +2
The OmegaWhite survey for short-period variable stars - V. Discovery of an ultracompact hot subdwarf binary with a compact companion in a 44 minute orbit
T. Kupfer, G. Ramsay, J. van Roestel +20
New high resolution synthetic stellar libraries for the Gaia Mission
R. Sordo, A. Vallenari, J. C. Bouret +12
The subdwarf B + white dwarf binary KPD 1930+2752 - a Supernova Type Ia progenitor candidate
S. Geier, S. Nesslinger, U. Heber +3
Hot subdwarf stars in close-up view I. Rotational properties of subdwarf B stars in close binary systems and nature of their unseen companions
S. Geier, U. Heber, Ph. Podsiadlowski +4
HVS7: a chemically peculiar hyper-velocity star
N. Przybilla, M. F. Nieva, A. Tillich +3
Orbital periods of twenty two subdwarf B stars
L. Morales-Rueda, P. F. L. Maxted, T. R. Marsh +2
Hot subluminous O stars from the SDSS
H. A. Hirsch, U. Heber, S. J. O'Toole
NLTE spectroscopic analysis of the $^3$He anomaly in subluminous B-type stars
D. Schneider, A. Irrgang, U. Heber +2
A new HW Vir binary from the Palomar Transient Factory: PTF1 J072455.75+125300.3 - An eclipsing subdwarf B binary with a M-star companion
M. Schindewolf, D. Levitan, U. Heber +4
Three ways to solve the orbit of KIC11558725: a 10 day beaming sdB+WD binary with a pulsating subdwarf
J. H. Telting, R. H. Ãstensen, A. S. Baran +16
Simultaneous time-series spectroscopy and multi-band photometry of the sdBV PG 1605+072
S. Falter, U. Heber, S. Dreizler +3
Binaries discovered by the SPY project I. HE 1047-0436: a subdwarf B + white dwarf system
R. Napiwotzki, H. Edelmann, U. Heber +4
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
HS 0705+6700: a new eclipsing sdB binary
H. Drechsel, U. Heber, R. Napiwotzki +6
Spectral analysis of four multi mode pulsating sdB stars
U. Heber, I. N. Reid, K. Werner
Atmospheric parameters and abundances of sdB stars
U. Heber, H. Edelmannn
Spectroscopic Analysis of Subluminous B Stars in Binaries - Four Candidate Systems with Neutron Star/Black Hole Companions Discovered
S. Geier, C. Karl, H. Edelmann +2
Discovery of a stripped red giant core in a bright eclipsing binary star
P. F. L. Maxted, D. R. Anderson, M. R. Burleigh +12