J
James Liebert
Researcher at Steward Health Care System
Publications - 52
Citations - 2169
James Liebert is an academic researcher from Steward Health Care System. The author has contributed to research in topics: White dwarf & Stars. The author has an hindex of 20, co-authored 52 publications receiving 2119 citations. Previous affiliations of James Liebert include Carnegie Institution for Science.
Papers
More filters
Journal ArticleDOI
The Palomar-Green Catalog of Ultraviolet-Excess Stellar Objects
TL;DR: In this paper, the authors present le catalogue de Stromgren et al. which donne les positions avec une precision de 8'', les magnitudes photographiques B a 0,29 mag pres, les types spectraux, des references and les couleurs de Stemgren, and 1715 constituent un echantillon statistiquement complet couvrant 10714 degres carres de 266 champs du Palomar
Journal ArticleDOI
The Luminosity Function of DA White Dwarfs
Journal ArticleDOI
M dwarf spectra from 0.6 to 1.5 micron - A spectral sequence, model atmosphere fitting, and the temperature scale
J. D. Kirkpatrick,Douglas M. Kelly,Douglas M. Kelly,George H. Rieke,James Liebert,Rainer Wehrse +5 more
TL;DR: In this paper, the spectral data were compared to recent theoretical models, from which a temperature scale is assigned, and a variety of temperature-sensitive features useful for spectral classification were identified.
Journal ArticleDOI
An Atlas of Optical Spectra of White-Dwarf Stars
F. Wesemael,Jesse L. Greenstein,James Liebert,Robert Lamontagne,Gilles Fontaine,Pierre Bergeron,J. W. Glaspey +6 more
TL;DR: In this article, a complete atlas of optical spectra of white dwarf stars is presented, and the variation of the dominant spectra features as a function of effective temperature and abundance is documented.
Journal ArticleDOI
Spectrophotometric and model-atmosphere analyses of the hot DO and DAO white dwarfs from the Palomar-Green survey
TL;DR: In this paper, the spectroscopic data were analyzed in terms of a grid of hot, high-gravity LTE model atmospheres composed of a mixture of hydrogen and helium, and atmospheric parameters were deduced for each class of objects.