Hayek, W., Wiesendahl, U., Christlieb, N., Eriksson, K., Korn, A. J., Barklem, P. S., ...
We report on a detailed abundance analysis of two strongly r-process enhanced, very metal-poor stars newly discovered in the HERES project, CS 29491-069 ([Fe/H]=-2.51, [r/Fe]=+1.1) and HE 1219-0312...
Koester, D., Voss, B., Napiwotzki, R., Christlieb, N., Homeier, D., Lisker, T., ...
The ESO Supernova Ia Progenitor Survey (SPY) took high-resolution spectra of more than 1000 white dwarfs and pre-white dwarfs. About two thirds of the stars observed are hydrogen-dominated DA white...
Lithium abundances of extremely metal-poor turnoff stars. (2009)
Aoki, W., Barklem, P.S., Beers, T.C., Christlieb, N., Inoue, S., Garcia Perez, A.E., ...
Original article can be found at: http://www.iop.org/EJ/journal/apj Copyright American Astronomical Society. DOI: 10.1088/0004-637X/698/2/1803 [Full text of this article is not available in the UHRA]
Koester, D., Voss, B., Napiwotzki, R., Christlieb, N., Homeier, D., Lisker, T., ...
Original article can be found at: http://www.aanda.org/ Copyright The European Southern Observatory (ESO) DOI: 10.1051/0004-6361/200912531
Schoerck, T., Christlieb, N., Cohen, J. G., Beers, T. C., Shectman, S., Thompson, I., ...
We determine the metallicity distribution function (MDF) of the Galactic halo by means of a sample of 1638 metal-poor stars selected from the Hamburg/ESO objective-prism survey (HES). The sample was...
The stellar content of the Hamburg/ESO survey. IV. Selection of candidate metal-poor stars (2008)
Christlieb, N., Schoerck, T., Frebel, A., Beers, T. C., Wisotzki, L., Reimers, D.
We present the quantitative methods used for selecting candidate metal-poor stars in the Hamburg/ESO objective-prism survey (HES). The selection is based on the strength of the Ca II K line, B-V...
A new sample of extremely/ultra metal-poor stars (2008)
Garcia Perez, A. E., Christlieb, N., Ryan, S. G., Beers, T. C., Aoki, W., Asplund, M., ...
LINNÉ, a Software System for Automatic Classification (2007)
H. A. Bushouse, N. Christlieb, L. Wisotzki, G. Graho, A. Nelke, ...
. We report on the software system Linn e, which has been designed for the development and evaluation of classification models. Linn e is used for the exploitation of the Hamburg/ESO survey (HES), an...
Binary White Dwarfs in the Supernova Ia Progenitor Survey. (2007)
Napiwotzki, R., Karl, C., Nelemans, G., Yungelson, L., Christlieb, N., Drechsel, H., ...
Carbon enhanced metal-poor stars I. Chemical compositions of 26 stars. (2007)
Aoki, W., Beers, T.C., Christlieb, N., Norris, J.E., Ryan, S.G., Tsangarides, S.
Original article can be found at: http://www.iop.org/EJ/journal/apj Copyright American Astronomical Society. DOI: 10.1086/509817 [Full text of this article is not available in the UHRA]
Frebel, A., Christlieb, N., Norris, J. E., Beers, T. C., Bessell, M. S., Rhee, J., ...
We present a sample of 1777 bright (9
Metal traces in white dwarfs of the SPY (ESO Supernova Ia Progenitor Survey) sample (2005)
Koester, D., Rollenhagen, K., Napiwotzki, R., Voss, B., Christlieb, N., Homeier, D., ...
Binaries discovered by the SPY project IV. Five single-lined DA double white dwarfs. (2005)
Nelemans, G., Napiwotzki, R., Karl, C., Marsh, T.R., Voss, B., Roelofs, G., ...
DAZ White Dwarfs in the SPY Sample. (2005)
Koester, D., Rollenhagen, K., Napiwotzki, R., Voss, B., Christlieb, N., Homeier, D., ...
Subdwarf B Stars from the ESO Supernova Ia Progenitor Survey -- Observation versus Theory. (2005)
Lisker, T., Heber, U., Napiwotzki, R., Christlieb, N., Han, Z., Homeier, D., ...
New Results from the Supernova Ia Progenitor Survey. (2005)
Napiwotzki, R., Karl, C., Nelemans, G., Yungelson, L., Christlieb, N., Drechsel, H., ...
Werner, K., Rauch, T., Napiwotzki, R., Christlieb, N., Reimers, D., Karl, C.
Original paper can be found at: http://astrosociety.org/pubs/cs/328.html Copyright ASP
HE 0437-5439: an unbound hypervelocity main-sequence B-type star. (2005)
Edelmann, H., Napiwotzki, R., Heber, U., Christlieb, N., Reimers, D.
Original article can be found at: http://www.iop.org/EJ/journal/apjl Copyright American Astronomical Society DOI: 10.1086/498940 [Full text of this article is not available in the UHRA]
Close binary EHB stars from SPY (2004)
Napiwotzki, R., Karl, C., Lisker, T., Heber, U., Christlieb, N., Reimers, D., ...
Close binary white dwarfs and supernovae IA (2004)
Christlieb , N., Drechsel , H., Heber , U., Homeier , D., Karl , C., Koester , D., ...
Informamos sobre el estado actual de los surveys" de velocidades radiales para binarias de enanas blancas (degeneradas dobles - DDs) incluyendo SPY (Exploración ESO de progenitoras de supernovas Ia)...
Spectroscopic analysis of sdB stars from the ESO Supernova Ia Progenitor Survey (2004)
Lisker, T., Heber, U., Napiwotzki, R., Christlieb, N., Han, Z., Homeier, D., ...
Double Degenerate and Progenitors of Supernovae Type Ia. (2004)
Napiwotzki, R., Yungelson, L., Nelemans, G., Marsh, T.R., Leibundgut, B., Renzini, A., ...
HE0107-5240, A Chemically Ancient Star.I. A Detailed Abundance Analysis (2003)
Christlieb, N., Gustafsson, B., Korn, A. J., Barklem, P. S., Beers, T. C., Bessell, M. S., ...
We report a detailed abundance analysis for HE0107-5240, a halo giant with [Fe/H]_NLTE=-5.3. This star was discovered in the course of follow-up medium-resolution spectroscopy of extremely metal-poor...
Binaries discovered by the SPY project. I. HE 1047-0436: A subdwarf B white dwarf syste (2001)
Napiwotzki, R., Edelmann, H., Heber, U., Karl, C., Drechsel, H., Pauli, E.M., ...
Spectral Analysis of sdB Stars from the Hamburg ESO Survey. (2001)
Edelmann, H., Heber, U., Napiwotzki, R., Lemke, M., Christlieb, N.
Search for progenitors of supernovae type Ia with SPY. (2001)
Napiwotzki, R., Christlieb, N., Drechsel, H., Hagen, H.J., Heber, U., Homeier, D., ...
‘The definitive version is available at www3.interscience.wiley.com .' Copyright WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim DOI: 10.1002/1521-3994(200112)322:5/63.0.CO;2-I [Full text of this...