Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies
if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the
same subfield and year (this is the minimum needed to enter the top 1%, not the average
within it), or reaches the top citation threshold in at least one of its specific research
topics.
Dwarfs Cooler than “M”: The Definition of Spectral Type “L” Using Discoveries from the 2 Micron All‐Sky Survey (2MASS)
1999552 citationsJames Liebert, C. C. Dahn et al.The Astrophysical Journalprofile →
The theory of brown dwarfs and extrasolar giant planets
2001451 citationsAdam Burrows, James Liebert et al.profile →
Peers — A (Enhanced Table)
Peers by citation overlap · career bar shows stage (early→late)
cites ·
hero ref
This map shows the geographic impact of James Liebert's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by James Liebert with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites James Liebert more than expected).
This network shows the impact of papers produced by James Liebert. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by James Liebert. The network helps show where James Liebert may publish in the future.
Co-authorship network of co-authors of James Liebert
This figure shows the co-authorship network connecting the top 25 collaborators of James Liebert.
A scholar is included among the top collaborators of James Liebert based on the total number of
citations received by their joint publications. Widths of edges
represent the number of papers authors have co-authored together.
Node borders
signify the number of papers an author published with James Liebert. James Liebert is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Beauchamp, A.L., F. Wesemaël, P. Bergeron, James Liebert, & R. A. Saffer. (1996). The DB and DBA white dwarfs: epitomes of hydrogen-deficient stars. ASPC. 96. 295.3 indexed citations
5.
Howell, Steve B., James Liebert, & R. M. Wagner. (1994). Spectroscopy of Faint Cataclysmic Variables III.. Information Bulletin on Variable Stars. 4072. 1.
6.
Shipman, H. L., F. Cordova, G. Hammond, et al.. (1992). HST Observations of Cool White Dwarf Stars. American Astronomical Society Meeting Abstracts. 181.
7.
Beck, Tracy L., T. D. Oswalt, P. Hintzen, et al.. (1991). The Extremely Cool White Dwarf LP549-32. Bulletin of the American Astronomical Society. 23. 1418.
8.
Liebert, James. (1991). Very Low Mass Stars and Brown Dwarfs. ASPC. 20. 125.
9.
Smith, J. A., T. D. Oswalt, S. K. Leggett, et al.. (1991). Infrared Photometry of Cool White Dwarfs in Wide Binaries. Bulletin of the American Astronomical Society. 23. 1418.1 indexed citations
10.
Holberg, J. B., E. M. Sion, James Liebert, & G. Vauclair. (1987). EXOSAT Observations of DA White Dwarf Stars and the m(He)/n(H)vs. Teff Correlation. Bulletin of the American Astronomical Society. 19. 1041.
11.
Mason, P. A., James Liebert, & Gary D. Schmidt. (1987). Near Simultaneous Polarimetry and Phase-Resolved Spectroscopy of the AM Her System H 0538+608. IBVS. 3104. 1.2 indexed citations
12.
Philip, A. G. D., D. S. Hayes, & James Liebert. (1987). The Second Conference on Faint Blue Stars : International Astronomical Union Colloquium no. 95, held in Tucson, Arizona, 1-5 June, 1987.3 indexed citations
Liebert, James, et al.. (1982). The very hot, pulsating PG 1159 white dwarfs.. Bulletin of the American Astronomical Society. 14(4). 915.1 indexed citations
15.
Weymann, R. J., David W. Latham, J. R. P. Angel, et al.. (1980). An Optical Three-Way Split - Triple Quasar PG1115+08. Science News. 118. 4.2 indexed citations
16.
Liebert, James & E. M. Sion. (1979). Is the Relative Frequency of Magnetic White Dwarfs Higher Among Cool Stars than Hot Stars. 20. 53.1 indexed citations
17.
Dahn, C. C., P. Hintzen, James Liebert, & H. Spinrad. (1976). LP701-29: A Degenerate Star with B-V = 1.88.. Bulletin of the American Astronomical Society. 8. 506.4 indexed citations
18.
Strand, K. Aa., C. C. Dahn, & James Liebert. (1976). G107-70: A Partially Resolved Pair of Cool Degenerate Stars.. Bulletin of the American Astronomical Society. 8. 506.1 indexed citations
19.
Liebert, James, J. R. P. Angel, & H. S. Stockman. (1976). Feige 7: A Hot, Variable Magnetic White Dwarf. Bulletin of the American Astronomical Society. 8. 341.1 indexed citations
Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive
bibliographic database. While OpenAlex provides broad and valuable coverage of the global
research landscape, it—like all bibliographic datasets—has inherent limitations. These include
incomplete records, variations in author disambiguation, differences in journal indexing, and
delays in data updates. As a result, some metrics and network relationships displayed in
Rankless may not fully capture the entirety of a scholar's output or impact.