L
Lee Hartmann
Researcher at University of Michigan
Publications - 590
Citations - 60559
Lee Hartmann is an academic researcher from University of Michigan. The author has contributed to research in topics: Stars & T Tauri star. The author has an hindex of 134, co-authored 579 publications receiving 57649 citations. Previous affiliations of Lee Hartmann include University of Hawaii & National Science Foundation.
Papers
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Journal ArticleDOI
On the extended chromosphere of Alpha Orionis
Lee Hartmann,E. H. Avrett +1 more
TL;DR: In this article, a detailed examination of the extended chromosphere of Alpha Orionis was performed in an attempt to characterize the matter-emitting processes of red giants and supergiants.
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The dusty envelopes of FU Orionis variables
Scott J. Kenyon,Lee Hartmann +1 more
TL;DR: In this article, the spectral energy distributions of five FU Orionis variables are discussed using new ground-based infrared photometry and IRAS Addscan measurements, and it is suggested that the far-infrared excesses arise in somewhat flattened dusty envelopes with a covering factor in a solid angle of roughly one-half.
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The extreme T Tauri star RW Aur: accretion and outflow variability
TL;DR: In this paper, the authors present an analysis of the classical T Tauri star RW Aur A, based on 77 echelle spectra obtained at Lick Observatory over a decade of observations.
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Hybrid atmospheres and winds in supergiant stars
TL;DR: In this article, ultraviolet spectra showing evidence for hybrid chromospheres and winds are found in the supergiant Alpha Aqr (G2 Ib) and Beta Aqhr (G0 Ib).
Journal ArticleDOI
The Gould's Belt Distances Survey (GOBELINS). V. Distances and Kinematics of the Perseus molecular cloud
Gisela N. Ortiz-León,Laurent Loinard,Sergio A. Dzib,Phillip A. B. Galli,Marina Kounkel,Amy J. Mioduszewski,Luis F. Rodríguez,Rosa M. Torres,Lee Hartmann,Andrew F. Boden,Neal J. Evans,Cesar Briceno,John J. Tobin +12 more
TL;DR: In this paper, the authors derived the distance and structure of the Perseus molecular cloud by combining trigonometric parallaxes from Very Long Baseline Array (VLBA) observations, taken as part of the GOBELINS survey, and Gaia Data Release 2.