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
Pre-Main-Sequence Evolution in the Taurus-Auriga Molecular Cloud
Scott J. Kenyon,Lee Hartmann +1 more
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Rotation, convection, and magnetic activity in lower main-sequence stars
TL;DR: In this paper, the mean level of Ca n H and K emission (averaged over 15 years) is correlated with rotation period, as expected, but there is a further dependence of the emission on spectral type.
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Accretion and the Evolution of T Tauri Disks
TL;DR: Gullbring et al. as discussed by the authors estimate disk accretion rates for pre-main-sequence stars in the Taurus and Chamaeleon I molecular cloud complexes using a minimum of parameters.
Journal ArticleDOI
Disk accretion rates for T tauri stars
Erik Gullbring,Lee Hartmann,Cesar Briceno,Cesar Briceno,Cesar Briceno,Nuria Calvet,Nuria Calvet +6 more
TL;DR: In this paper, the authors present new measurements of disk accretion rates for T Tauri stars in the Taurus molecular cloud complex, which are based on intermediate-resolution spectrophotometry from 3200 to 5200 A, and derive the excess hot continuum emission produced by accretion onto the central star.
Journal ArticleDOI
The FU Orionis Phenomenon
Lee Hartmann,Scott J. Kenyon +1 more
TL;DR: In this article, the authors summarize the properties of FU Orionis variables and show how accretion disk models simply explain many peculiarities of these objects, and demonstrate that the FU Ori phenomenon is restricted to early phases of stellar evolution, probably with infall still occuring to the disk, which may help drive repetitive outbursts.