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Using Magnetic Activity and Galactic Dynamics to Constrain the Ages of M Dwarfs
Andrew A. West, Suzanne L. Hawley, John J. Bochanski +2
We present a study of the dynamics and magnetic activity of M dwarfs using the largest spectroscopic sample of low-mass stars ever assembled. The age at which strong surface magnet…
Chi Values for Blue Emission Lines in M Dwarfs
Andrew A. West, Suzanne L. Hawley
We compute chi values for blue emission lines in active M dwarfs. Using flux-calibrated spectra from nearby M dwarfs and spectral M dwarf templates from SDSS, we derive analytic re…
A First Look at Rotation in Inactive Late-Type M Dwarfs
Andrew A. West, Gibor Basri
We have examined the relationship between rotation and activity in 14 late-type (M6-M7) M dwarfs, using high resolution spectra taken at the W.M. Keck Observatory and flux-calibrat…
The Seventh Data Release of the Sloan Digital Sky Survey
K. Abazajian
This paper describes the Seventh Data Release of the Sloan Digital Sky Survey (SDSS), marking the completion of the original goals of the SDSS and the end of the phase known as SDS…
Galaxies appear simpler than expected
M. J. Disney, J. D. Romano, D. A. Garcia-Appadoo +3
Galaxies are complex systems the evolution of which apparently results from the interplay of dynamics, star formation, chemical enrichment, and feedback from supernova explosions a…
The Arecibo Legacy Fast ALFA Survey VII: A Neutral Hydrogen Cloud Complex in the Virgo Cluster
Brian R. Kent, Kristine Spekkens, Riccardo Giovanelli +5
We present observations of an HI cloud complex most likely located in the Virgo galaxy cluster, first reported by Kent et al. (2007). The complex consists of five clouds, detected…