Most of the older preprints / reprints can be downloaded as compressed Postscript files (*.ps.gz)
Recent publications are formatted as *.pdf
Bergemann M., Gehren T., 2010
Fe-peak element abundances in disk and halo stars
IAU Symp.Vol. 265, p. 348
Mashonkina L., Gehren T., Shi J.R., Korn A., Grupp F. 2010
Fe I/Fe II ionization equilibrium in cool stars: NLTE versus LTE
IAU Symp.Vol. 265, p. 197
Bergemann M., Pickering J.C., Gehren T. 2009
NLTE analysis of CoI/CoII lines in spectra of cool stars with new laboratory hyperfine splitting constants
MNRAS 401, 1334
Shi J. R., Gehren T., Mashonkina L., Zhao G. 2009
Statistical equilibrium of silicon in the atmospheres of metal-poor stars
Astron. Astrophys. 503, 533
Bergemann M., Gehren T. 2008
NLTE abundances of Mn in a sample of metal-poor stars
Astron. Astrophys. 492, 823
Zhang H. W., Gehren T., Zhao G. 2008
Solar scandium abundance
IAU Symp.Vol. 252, p. 127
Shi J. R., Gehren T., Butler K., Mashonkina L. I., Zhao G. 2008
Statistical equilibrium of silicon in the solar atmosphere
Astron. Astrophys. 486, 303
Zhang H. W., Gehren T., Zhao G. 2008
A non-local thermodynamic equilibrum study of scandium in the Sun
Astron. Astrophys. 481, 489
Mashonkina L., Zhao G., Gehren T., Aoki W., Bergemann M., Noguchi K., Shi J. R., Takada-Hidai M., Zhang H.
W. 2008
Non-LTE line formation for heavy elements in four very metal-poor stars
Astron. Astrophys. 478, 529
Bergemann M., Gehren T. 2007
Formation of Mn I lines in the solar atmosphere
Astron. Astrophys. 473, 291
Shi J. R., Gehren T., Zhang H. W., Zeng J. L., Zhao G. 2007
Lithium abundances in metal-poor stars
Astron. Astrophys. 465, 587
Kelz A., Bauer S.M., Grupp F., Hill G.J., Popow E., Palunas P.,
Roth M.M., MacQueen P.J., Tripphahn U. 2006
Prototype development of the integral-field unit for VIRUS
SPIE, 6273, 121
Goessl C.A., Drory N., Relke H., Gebhardt K., Grupp F., Hill G.J.,
Hopp U., Köhler R., MacQueen P. 2006
The VIRUS data reduction pipeline
SPIE, 6270, 66
Zhang H.W., Gehren T., Butler K., Shi J.R., Zhao G. 2006
Potassium abundances in nearby metal-poor stars
Astron. Astrophys. 457, 647
Zhang H.W., Butler K., Gehren T., Shi J.R., Zhao G. 2006
NLTE analysis of the solar potassium abundance (Research Note)
Astron. Astrophys, 453, 723
Gehren T., Shi J.R., Zhang H.W., Zhao G., Korn A.J. 2006
Na, Mg and Al abundances as a population discriminant for nearby metal-poor stars,
Astron. Astrophys. 451, 1065
Hill G.H., MacQueen P.J., Palunas P., Kelz A., Roth M.M., Gebhardt
K., Grupp F. 2005
VIRUS: a hugely replicated integral field spectrograph for HETDEX,
New Astronomy Reviews, 50, 378
Grupp F. 2005
Measuring the Properties of Optical Fibers: First Results from the AIP Fiber
Testbench for Fiber Bundle IFUs,
New Astronomy Reviews 50, 323
Hill G.J., MacQueen P.J., Palunas P., Kelz A., Roth
M.M., Gebhardt K., Grupp F. 2005
VIRUS: a hugely replicated integral field spectrograph for HETDEX,
New Astronomy Reviews, submitted
Grupp F. 2004
MAFAGS-OS: New opacity sampling model atmospheres
for A, F and G stars II. Temperature determination and three "standard" stars,
Astron. Astrophys. 426, 309-322
Shi J.R., Gehren T., Zhao G. 2004
Sodium abundances in nearby disk stars, Astron.
Astrophys. 423, 683
Grupp F. 2004
MAFAGS-OS: New opacity sampling model atmospheres
for A, F and G stars I. The model and the solar flux
Astron. Astrophys. 420, 289-305
Gehren T., Liang Y.C., Shi J.R., Zhang H.W., Zhao G. 2004
Abundances of Na, Mg and Al in nearby metal-poor stars, Astron. Astrophys. 413, 1045
Grupp F. 2003
The nature of the fiber noise with the FOCES spectrograph. Nature, modeling and
a way to achieve S/N > 400,
Astron. Astrophys. 412, 897
Korn A.J., Shi J., Gehren T. 2003
Kinetic equilibrium of iron in the atmospheres of cool dwarf stars. III. The ionization equilibrium
of selected reference stars,
Astron. Astrophys. 407, 691
Mashonkina L., Gehren T., Travaglio C., Borkova T. 2003
Mg, Ba and Eu abundances in thick disk and halo stars,
Astron. Astrophys. 397, 275
Christlieb N., Bessell M. S., Beers T. C., Gustafsson B., Korn A., Barklem P. S., Karlsson
T., Mizuno-Wiedner M., Rossi S. 2002
A stellar relic from the early Milky Way, Nature 419, 904
Korn A. 2002
Rectifying échelle Spectra - A Comparison Between UVES, FEROS and FOCES,
Scientific Drivers for ESO Future VLT/VLTI Instrumentation Proceedings of the ESO Workshop held in Garching, Germany,
p. 199
Gehren T., Korn A.J., Shi J. 2001
Kinetic equilibrium of iron in the atmospheres of cool dwarf stars. II. Weak Fe I lines in the solar
spectrum,
Astron. Astrophys. 380, 645
Mashonkina L., Gehren T. 2001
Heavy element abundances in cool dwarf stars: An implication for the evolution of the Galaxy, Astron. Astrophys.
376, 232
Bernkopf J., Fiedler A., Fuhrmann K. 2001
The Dark Side of the Milky Way, in Astrophysical Ages and Time Scales, ASP Conf.Ser. 245
Korn A.J., Gehren T. 2001
New gravities for old stars, in Astrophysical Ages and Time Scales, ASP Conf.Ser. 245, 337
Gehren T., Butler K., Mashonkina L., Reetz J., Shi J. 2001
Kinetic equilibrium of iron in the atmospheres of cool dwarf stars. I. The solar iron spectrum,
Astron. Astrophys. 366, 981
Mashonkina L., Gehren T. 2001
Barium and europium abundances in cool dwarf stars and nucleosynthesis of heavy elements, Astron. Astrophys.
364, 249
Korn A.J., Gehren T. 2000
Hipparcos and the distance scale to local halo stars, in Dynamics of Star Clusters and the Milky
Way, ASP Conf.Ser., in press
Fuhrmann K. 2000
Nearby stars of the Galactic disk and halo. II., Astron. Astrophys., submitted
Fuhrmann K. 2000
The Deep Thick Disk as Seen by UVES, Proc. 2nd Samos Meeting on Cosmology, Geometry and Relativity, Pythagoreon,
p. 351
Fuhrmann K. 2000
The Deep Thick Disk as Seen by UVES, Proc. VLT Opening Symposium, Antofagasta, eds. J. Bergeron and A. Renzini,.
Berlin, p. 351
Fuhrmann K. 2000
And if Thick-Disk stars were the First Stars?, The First Stars. Proceedings of the MPA/ESO Workshop, eds.
Achim Weiss, Tom G. Abel, Vanessa Hill,. Berlin, p. 68
Zhao G., Gehren T. 2000
Non-LTE analysis of neutral magnesium in cool stars, Astron. Astrophys. 362, 1077
Korn A.J., Gehren T. 2000
Gravities of Metal-Poor Halo Dwarfs and the Age of the Universe, MPA/ESO Workshop on "The First Stars",
p.75
Zhao G., Gehren T. 2000
NLTE Analysis of Magnesium in Cool Stars, Proc. of the 35th Liege International Astrophysics Colloquium,
eds. A. Noels et al., Liege, p.277
Christlieb N., Reimers D., Wisotzki L., Reetz J., Gehren T., Beers T. 1999
Finding the First Stars: The Hamburg/ESO Objective Prism Survey, MPA/ESO Workshop on "The First Stars",
p.49
Christlieb N., Wisotzki L., Reimers D., Gehren
T., Reetz J., Beers T. 1999
An Automated Search for Metal-Poor Halo Stars in the Hamburg/ESO Objective-Prism Survey, ASP Conf.Ser. 165,
259
Fuhrmann, K., Bernkopf, J. 1999
HR 4657 - evidence for a thick-disk field blue straggler, Astron.Astrophys., 347, 897
Gehren T., Ottmann R., Reetz J. 1999
Photospheric metal abundances of AR Lacertae, Astron. Astrophys., 344, 221
Mashonkina, L., Gehren, T., Bikmaev, I. 1999
Barium abundances in cool dwarf stars as a constraint to s- and r-process nucleosynthesis, Astron.Astrophys.,
343, 519
Fuhrmann, K. 1999
The Disk Populations in the [Mg/H]-[Fe/Mg] Plane, Astrophys.Space Sci. 265, 265
Reetz J. 1999 Oxygen Abundances in the Sun and Metal-Deficient Stars, in: Galaxy Evolution: Connecting the Distant Universe with the Local Fossil Record, Meudon, France, p.171
Bernkopf J., Fuhrmann K. 1999 Old Subgiants and the Onset of Thin-Disk Formation, in: Galaxy Evolution: Connecting the Distant Universe with the Local Fossil Record, Meudon, France
Mao Shude, Reetz J., Lennon,
D.J. 1998
Detecting Luminous Gravitational Microlenses Using Spectroscopy, Astron. Astrophys. 338, 56
Ottmann R., Pfeiffer M.J., Gehren T. 1998
Photospheric metal abundances in active stellar atmospheres, Astron. Astrophys. 338, 651
Baumüller, D., Butler, K., Gehren, T. 1998
Sodium in the Sun and in metal-poor stars, Astron. Astrophys. 338, 637
Fuhrmann K. 1998
Nearby stars of the Galactic disk and halo, Astron. Astrophys. 338, 161
Fuhrmann, K., Pfeiffer, M.J., Bernkopf, J. 1998
Solar-type stars with planetary companions: u And, r1
Cnc, t Boo, 16 Cyg and r CrB, Astron. Astrophys. 336,
942
Pfeiffer, M.J., Frank, C., Baumüller, D., Fuhrmann, K., Gehren, T. 1998
FOCES - a fibre optics Cassegrain échelle spectrograph, Astron. Astrophys. Suppl., 130, 381
Zhao Gang, Butler, K., Gehren, T. 1998
Non-LTE analysis of neutral magnesium in the solar atmosphere, Astron. Astrophys. 333, 219
Bernkopf, J. 1998
Unified stellar models and convection in cool stars, Astron. Astrophys. 332, 127
Fuhrmann K. 1998
Surface gravities of very metal-poor stars from Hipparcos parallaxes, Astron. Astrophys. 330, 626
Schlattl, H., Weiss, A., Ludwig, H.-G., Bernkopf, J. 1997 A precision-controlled solar model with realistic subatmospheric stratification , in Solar Convection and Oscillations and their Relationship, eds. F.P. Pijpers, J. Christensen-Dalsgaard, and C.S. Rosenthal, Kluwer, p. 65
Lennon, D.J., Mao Shude,
Reetz J., Gehren T., Yan L., Renzini A. 1997
Real-Time Spectroscopic Observations of Gravitational Microlensing Events - Probing the Evolution of the Galactic
Bulge, The Messenger 90, 30
Fuhrmann, K., Pfeiffer, M.J., Bernkopf, J. 1997
Solar-type stars with planetary companions: 51 Pegasi and 47 Ursae Majoris, Astron. Astrophys., 326,
1081
Baumüller, D., Gehren, T. 1997
Aluminium in metal-poor stars, Astron. Astrophys., 325, 1088
Fuhrmann, K., Pfeiffer, M., Frank, C., Reetz, J., Gehren, T. 1997
The surface gravities of cool dwarf stars revisited, Astron. Astrophys., 323, 909
Lennon, D.J., Shude Mao, Fuhrmann, K., Gehren, T. 1996
The First Spectroscopic Observations of Caustic-Crossing In A Binary Microlensing Event, Astrophys. J. Lett.
471, L23
Bedding, T.R., Kjeldsen, H., Reetz, J., Barbuy, B. 1996
Measuring stellar oscillations using equivalent widths of absorption lines, Mon. Not. R. Astron. Soc., 280,
1155
Baumüller, D., Gehren, T. 1996
Line formation of neutral aluminium in the Sun, Astron. Astrophys. 307, 961
(figures not included, 50 kB)
Last revision: March 25, 2010
Thomas Gehren (gehren@usm.lmu.de)