Items where Author is "<span class="person_name">Heber, U.</span>"
Number of items: 61.
The ESO supernovae type Ia progenitor survey (SPY) : The radial velocities of 644 DA white dwarfs. (2019)
R. Napiwotzki,
C. A. Karl,
T. Lisker,
S. Catalan,
H. Drechsel,
U. Heber,
D. Homeier,
D. Koester,
B. Leibundgut,
T. R. Marsh,
S. Moehler,
G. Nelemans,
D. Reimers,
A. Renzini,
A. Stroer
and
L. Yungelson
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Ultraviolet-excess sources with a red/infrared counterpart : Low-mass companions, debris discs and QSO selection. (2014)
K. Verbeek,
Paul J. Groot,
Simone Scaringi,
Jorge Casares,
Jesus M. Corral-Santana,
Niall Deacon,
J.E. Drew,
B.T. Gänsicke,
E. Gonzalez-Solares,
R. Greimel,
U. Heber,
R. Napiwotzki,
R.H. Ostensen,
D. Steeghs,
N.J. Wright
and
A. Zijlstra
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Spectroscopic follow-up of ultraviolet-excess objects selected from the UVEX survey. (2012)
K. Verbeek,
P.J. Groot,
S. Scaringi,
G. Nelemans,
R. Napiwotzki,
B. Spikings,
J.E. Drew,
R.H. Østensen,
D. Steeghs,
B.T. Gänsicke,
J. Casares,
J.M. Corral-Santana,
R.L.M. Corradi,
Niall Deacon,
J.J. Drake,
E. González-Solares,
M.J. Irwin,
R. Greimel,
U. Heber
and
C. Knigge
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MUCHFUSS - massive unseen companions to hot faint underluminous stars from SDSS. (2012)
S. Geier,
V. Schaffenroth,
H. Hirsch,
A. Tillich,
U. Heber,
P. F. L. Maxted,
R. H. Ostensen,
B. N. Barlow,
S. J. O'Toole,
T. Kupfer,
T. Marsh,
B. Gaensicke,
R. Napiwotzki,
O. Cordes,
S. Mueller,
L. Classen,
E. Ziegerer
and
H. Drechsel
Binaries discovered by the MUCHFUSS project SDSS J08205+0008 - An eclipsing subdwarf B binary with brown dwarf companion. (2011)
S. Geier,
V. Schaffenroth,
H. Drechsel,
U. Heber,
T. Kupfer,
A. Tillich,
R. Ostensen,
K. Smolders,
P. Degroote,
P.F.L. Maxted,
B.N. Barlow,
B.T. Gansicke,
T.R. Marsh
and
R. Napiwotzki
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Binaries discovered by the SPY survey VI : Discovery of a low mass companion to the hot subluminous planetary nebula central star EGB5-a recently ejected common envelope? (2011)
S. Geier,
R. Napiwotzki,
U. Heber
and
G. Nelemans
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The Hyper-MUCHFUSS project : probing the Galactic halo with sdB stars. (2011)
A. Tillich,
U. Heber,
S. Geier,
H. Hirsch,
P.F.L. Maxted,
B.T. Gansicke,
T.R. Marsh,
R. Napiwotzki,
R. Ostensen
and
R.D. Scholz
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The MUCHFUSS project - Searching for hot subdwarf binaries with massive unseen companions : survey, target selection and atmospheric parameters. (2011)
S. Geier,
H. Hirsch,
A. Tillich,
P.F.L. Maxted,
S.J. Bentley,
R. Ostensen,
U. Heber,
B.T. Gansicke,
T.R. Marsh,
R. Napiwotzki,
B.N. Barlow
and
S. O'Toole
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Massive unseen companions to hot faint underluminous stars from SDSS (MUCHFUSS) - Analysis of seven close subdwarf B binaries. (2011)
S. Geier,
P.F.L. Maxted,
R. Napiwotzki,
R. Ostensen,
U. Heber,
H. Hirsch,
T. Kupfer,
S. Muller,
A. Tillich,
B.N. Barlow,
R. Oreiro,
T.A. Ottosen,
C. Copperwheat,
B.T. Gansicke
and
T.R. Marsh
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Binaries discovered by the SPY project: V. GD 687 – a massive double degenerate binary progenitor that will merge within a Hubble time. (2010)
S. Geier,
U. Heber,
T. Kupfer
and
R. Napiwotzki
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Hot subdwarf stars in close-up view. I. Rotational properties of subdwarf B stars in close binary systems and nature of their unseen companions. (2010)
S. Geier,
U. Heber,
P. Podsiadlowski,
H. Edelmann,
R. Napiwotzki,
T. Kupfer
and
S. Muller
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High resolution UVES/VLT spectra of white dwarfs observed for the ESO SN Ia Progenitor Survey III. DA white dwarfs. (2009)
D. Koester,
B. Voss,
R. Napiwotzki,
N. Christlieb,
D. Homeier,
T. Lisker,
D. Reimers
and
U. Heber
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The B-type giant HD 271791 in the Galactic halo : Linking run-away stars to hyper-velocity stars. (2008)
U. Heber,
H. Edelmann,
R. Napiwotzki,
M. Altmann
and
R.D. Scholz
Binary sdB Stars with Massive Compact Companions. (2008)
S. Geier,
C. Karl,
H. Edelmann,
U. Heber
and
R. Napiwotzki
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Hypervelocity Stars: Young and Heavy or Old and Light? (2008)
U. Heber,
H. Hirsch,
H. Edelmann,
R. Napiwotzki,
S. O'Toole,
W. Brown
and
M. Altmann
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LMC origin of the hyper-velocity star HE 0437-5439: Beyond the supermassive black hole paradigm. (2008)
N. Przybilla,
M.A. Nieva,
U. Heber,
M. Firnstein,
K. Butler,
R. Napiwotzki
and
H. Edelmann
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Metal Abundances of Subdwarf B Stars from SPY - a Pattern Emerges. (2008)
S. Geier,
U. Heber
and
R. Napiwotzki
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Model Spectra of Hot Subdwarfs for the Gaia Mission. (2008)
Luke Hindson,
R. Napiwotzki,
U. Heber
and
M. Lemke
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Radial Velocity Variable sdO/Bs from SPY - Preliminary Orbits of Three New Short Period Binaries. (2008)
S. Geier,
U. Heber
and
R. Napiwotzki
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3D-Kinematics of White Dwarfs from the SPY-Project. (2007)
R. Richter,
U. Heber
and
R. Napiwotzki
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Binary White Dwarfs in the Supernova Ia Progenitor Survey. (2007)
R. Napiwotzki,
C. Karl,
G. Nelemans,
L. Yungelson,
N. Christlieb,
H. Drechsel,
U. Heber,
D. Homeier,
D. Koester,
B. Leibundgut,
T.R. Marsh,
S. Moehler,
A. Renzini
and
D. Reimers
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Spectroscopic Analysis of Subluminous B Stars in Binaries with Compact Companions. (2007)
S. Geier,
C. Karl,
H. Edelmann,
U. Heber
and
R. Napiwotzki
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The Subdwarf B + White Dwarf Binary KPD 1930+2752, a Supernova Type Ia Progenitor Candidate. (2007)
S. Geier,
S. Nesslinger,
U. Heber,
N. Przybilla,
R. Napiwotzki
and
R-P. Kudritzki
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3D kinematics of white dwarfs from the SPY project. II. (2006)
E.M. Pauli,
R. Napiwotzki,
U. Heber,
M. Altmann
and
M. Odenkirchen
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Rotation velocities of white dwarfs. III. DA stars with convective atmospheres. (2005)
C. Karl,
R. Napiwotzki,
U. Heber,
S. Dreizler,
D. Koester
and
I.N. Reid
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Hot subdwarfs from the ESO Supernova Ia Progenitor Survey. I. Atmospheric parameters and cool companions of sdB stars. (2005)
T. Lisker,
U. Heber,
R. Napiwotzki,
N. Christlieb,
Z. Han,
D. Homeier
and
D. Reimers
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HE 0437-5439: an unbound hypervelocity main-sequence B-type star. (2005)
H. Edelmann,
R. Napiwotzki,
U. Heber,
N. Christlieb
and
D. Reimers
The Mass of the sdB Primary of the Binary HS 2333+3927. (2005)
U. Heber,
H. Drechsel,
C. Karl,
R. Ostensen,
S. Folkes,
R. Napiwotzki,
M. Altmann,
O. Cordes,
J.E. Solheim,
B. Voss
and
D. Koester
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New Results from the Supernova Ia Progenitor Survey. (2005)
R. Napiwotzki,
C. Karl,
G. Nelemans,
L. Yungelson,
N. Christlieb,
H. Drechsel,
U. Heber,
D. Homeier,
D. Koester,
J. Kruk,
B. Leibundgut,
T.R. Marsh,
S. Moehler,
A. Renzini
and
D. Reimers
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Rotation Velocities of DA White Dwarfs with Convective Atmospheres. (2005)
C. Karl,
U. Heber,
R. Napiwotzki,
S. Dreizler,
D. Koester
and
I.N. Reid
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Subdwarf B Binaries from the SPY Project. (2005)
C. Karl,
U. Heber
and
R. Napiwotzki
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Subdwarf B Stars from the ESO Supernova Ia Progenitor Survey -- Observation versus Theory. (2005)
T. Lisker,
U. Heber,
R. Napiwotzki,
N. Christlieb,
Z. Han,
D. Homeier
and
D. Reimers
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Subluminous O Stars from the ESO Supernova Progenitor Survey - Observation versus Theory. (2005)
A. Stroeer,
U. Heber,
T. Lisker,
R. Napiwotzki
and
S. Dreizler
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Close binary EHB stars from SPY. (2004)
R. Napiwotzki,
C. Karl,
T. Lisker,
U. Heber,
N. Christlieb,
D. Reimers,
G. Nelemans
and
D. Homeier
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HS 2333 3927: A new sdB dM binary with a large reflection effect. (2004)
U. Heber,
H. Drechsel,
R. Ostensen,
C. Karl,
R. Napiwotzki,
M. Altmann,
O. Cordes,
J.E. Solheim,
B. Voss,
D. Koester
and
S. Folkes
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Double Degenerate and Progenitors of Supernovae Type Ia. (2004)
R. Napiwotzki,
L. Yungelson,
G. Nelemans,
T.R. Marsh,
B. Leibundgut,
A. Renzini,
D. Homeier,
D. Koester,
S. Moehler,
N. Christlieb,
D. Reimers,
H. Drechsel,
U. Heber,
C. Karl
and
E.M. Pauli
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FUSE Observations of EC14026 Stars. (2004)
P. Chayer,
G. Fontaine,
M. Fontaine,
R. Lamontagne,
F. Wesemael,
J. Dupuis,
U. Heber,
R. Napiwotzki
and
S. Moehler
HS 2333 + 3927: a new sdB binary with a large reflection effect. (2004)
C. Karl,
U. Heber,
H. Drechsel,
R. Napiwotzki,
M. Altmann,
R. Ostensen,
S. Folkes,
J.E. Solheim,
O. Cordes,
B. Voss
and
D. Koester
Spectral types and masses of white dwarfs in globular clusters. (2004)
S. Moehler,
D. Koester,
M. Zoccali,
F.R. Ferraro,
U. Heber,
R. Napiwotzki
and
A. Renzini
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Spectroscopic analysis of sdB stars from the ESO Supernova Ia Progenitor Survey. (2004)
T. Lisker,
U. Heber,
R. Napiwotzki,
N. Christlieb,
Z. Han,
D. Homeier
and
D. Reimers
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Discovery of a helium-core white dwarf progenitor. (2003)
U. Heber,
H. Edelmann,
T. Lisker
and
R. Napiwotzki
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Binaries discovered by the SPY project. III. HE 2209-1444: A massive, short period double degenerate. (2003)
C. Karl,
R. Napiwotzki,
G. Nelemans,
N. Christlieb,
D. Koester,
U. Heber
and
D. Reimers
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3D kinematics of white dwarfs from the SPY project. (2003)
E.M. Pauli,
R. Napiwotzki,
M. Altmann,
U. Heber,
M. Odenkirchen
and
F. Kerber
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Spectral analysis of sdB Stars from the Hamburg Quasar Survey. (2003)
H. Edelmann,
U. Heber,
H.J. Hagen,
S. Dreizler,
R. Napiwotzki,
D. Engels
and
M. Lemke
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NLTE Spectral Analysis of Iron Group Elements in the Hot Subluminous O-star BD+28 4211. (2003)
M. Ramspeck,
S. Haas,
R. Napiwotzki,
U. Heber,
J. Deetjen
and
S. Dreizler
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SPY - the ESO Supernovae type Ia Progenitor survey. (2003)
R. Napiwotzki,
N. Christlieb,
H. Drechsel,
H.J. Hagen,
U. Heber,
D. Homeier,
C. Karl,
D. Koester,
B. Leibundgut,
T.R. Marsh,
S. Moehler,
G. Nelemans,
E.M. Pauli,
D. Reimers,
A. Renzini
and
L. Yungelson
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Stellar Wind Signatures in sdB Stars. (2003)
U. Heber,
P.F.L. Maxted,
T.R. Marsh,
C. Knigge
and
J.E. Drew
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Resolving subdwarf B stars in binaries by HST imaging. (2002)
U. Heber,
S. Moehler,
R. Napiwotzki,
P. Thejll
and
E. Green
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HS 0705 6700: A new eclipsing sdB binary. (2001)
H. Drechsel,
U. Heber,
R. Napiwotzki,
R. Ostensen,
J.E. Solheim,
F. Johannessen,
S.L. Schuh,
J. Deetjen
and
S. Zola
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High-resolution UVES/VLT spectra of white dwarfs observed for the ESO SN Ia progenitor survey (SPY). I. (2001)
D. Koester,
R. Napiwotzki,
N. Christlieb,
H. Drechsel,
H.J. Hagen,
U. Heber,
D. Homeier,
C. Karl,
B. Leibundgut,
S. Moehler,
G. Nelemans,
D. Reimers,
E.M. Pauli,
A. Renzini
and
L. Yungelson
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Binaries discovered by the SPY project. I. HE 1047-0436: A subdwarf B white dwarf syste. (2001)
R. Napiwotzki,
H. Edelmann,
U. Heber,
C. Karl,
H. Drechsel,
E.M. Pauli
and
N. Christlieb
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Metal abundances of sdB stars. (2001)
H. Edelmann,
U. Heber
and
R. Napiwotzki
Search for progenitors of supernovae type Ia with SPY. (2001)
R. Napiwotzki,
N. Christlieb,
H. Drechsel,
H.J. Hagen,
U. Heber,
D. Homeier,
C. Karl,
D. Koester,
B. Leibundgut,
T.R. Marsh,
S. Moehler,
G. Nelemans,
E.M. Pauli,
D. Reimers,
A. Renzini
and
L. Yungelson
Spectral Analysis of sdB Stars from the Hamburg ESO Survey. (2001)
H. Edelmann,
U. Heber,
R. Napiwotzki,
M. Lemke
and
N. Christlieb
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Spectral Monitoring of HS 0209+0832 a DAB White Dwarf in the DB Gap. (2001)
H. Edelmann,
U. Heber
and
R. Napiwotzki
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Spectral analysis of sdB Stars from the Hamburg ESO Survey. (2001)
H. Edelmann,
U. Heber,
R. Napiwotzki,
M. Lemke
and
N. Christlieb
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First VLT spectra of white dwarfs in a globular cluster. (2000)
S. Moehler,
U. Heber,
R. Napiwotzki,
D. Koester
and
A. Renzini
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Spectral analysis of hot subluminous stars. (1999)
U. Heber,
H. Edelmann,
M. Lemke,
R. Napiwotzki
and
D. Engels
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Spectral analysis of the binary sdB star Feige 36. (1999)
H. Edelmann,
U. Heber,
R. Napiwotzki,
I.N. Reid
and
R. Saffer
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Abundances of UV bright stars in globular clusters. I. ROA 5701 in omega Centauri and Barnard 29 in M 13. (1998)
S. Moehler,
U. Heber,
M. Lemke
and
R. Napiwotzki
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NLTE spectral analysis of helium-rich sdO stars from the southern HK survey. (1996)
J.S. Drilling,
R. Napiwotzki,
S. Dreizler,
U. Heber
and
T.C. Beers
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