J
James Liebert
Researcher at University of Arizona
Publications - 341
Citations - 38537
James Liebert is an academic researcher from University of Arizona. The author has contributed to research in topics: White dwarf & Brown dwarf. The author has an hindex of 82, co-authored 341 publications receiving 36647 citations. Previous affiliations of James Liebert include Association of Universities for Research in Astronomy & Steward Health Care System.
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Journal ArticleDOI
The Two Micron All Sky Survey (2MASS)
Michael F. Skrutskie,Michael F. Skrutskie,Roc M. Cutri,R. Stiening,Martin D. Weinberg,Stephen E. Schneider,John M. Carpenter,Chas Beichman,R. Capps,T. Chester,J. Elias,John P. Huchra,James Liebert,C. Lonsdale,David G. Monet,Stephan D. Price,Patrick Seitzer,Thomas H. Jarrett,J. D. Kirkpatrick,John E. Gizis,E. Howard,T. Evans,John W. Fowler,L. Fullmer,Robert L. Hurt,R. M. Light,E. L. Kopan,K. A. Marsh,H. McCallon,R. Tam,S. D. Van Dyk,S. Wheelock +31 more
TL;DR: The Two Micron All Sky Survey (2MASS) as mentioned in this paper collected 25.4 Tbytes of raw imaging data from two dedicated 1.3 m diameter telescopes located at Mount Hopkins, Arizona and CerroTololo, Chile.
Journal ArticleDOI
Dwarfs Cooler Than M: The Definition of Spectral Type L Using Discoveries from the 2-Micron All-Sky Survey (2MASS)
J. Davy Kirkpatrick,I. Neill Reid,James Liebert,Roc M. Cutri,Brant O. Nelson,Charles Beichman,Conard C. Dahn,David G. Monet,John E. Gizis,Michael F. Skrutskie +9 more
TL;DR: In the first 371 sq. deg. of actual 2MASS survey data, they identified another twenty objects spectroscopically confirmed using the Low Resolution Imaging Spectrograph (LRIS) at the W.M. Keck Observatory.
Journal ArticleDOI
The theory of brown dwarfs and extrasolar giant planets
TL;DR: In this paper, the essential elements of the theory of brown dwarfs and giant planets are described, including their evolution, atmospheric composition, and spectra, including the new spectroscopic classes L and T. The theory explains the basic systematics of substellar-mass objects over three orders of magnitude in mass and age, and a factor of 30 in temperature.
Journal ArticleDOI
Astrometry and photometry for cool dwarfs and brown dwarfs
Conard C. Dahn,Hugh C. Harris,Frederick J. Vrba,Harry H. Guetter,B. Canzian,Arne Henden,Stephen E. Levine,Christian B. Luginbuhl,Alice K. B. Monet,David G. Monet,Jeffrey R. Pier,Ronald C. Stone,Richard L. Walker,Adam J. Burgasser,John E. Gizis,John E. Gizis,J. Davy Kirkpatrick,James Liebert,I. Neill Reid +18 more
TL;DR: In this paper, a trigonometric parallax determination for 28 late-type dwarfs and brown dwarfs is presented, including eight M dwarfs with spectral types between M7 and M9.
Journal ArticleDOI
67 Additional L Dwarfs Discovered by the Two Micron All Sky Survey
J. Davy Kirkpatrick,I. Neill Reid,James Liebert,John E. Gizis,Adam J. Burgasser,David G. Monet,Conard C. Dahn,Brant O. Nelson,R. Williams +8 more
TL;DR: In this article, photometry, far red spectra, and spectral classifications for an additional 67 L dwarfs discovered by the Two Micron All Sky Survey are presented, and a table of all known L and T dwarfs believed to lie within 25 pc of the Sun.