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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.

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On the extended chromosphere of Alpha Orionis

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

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).