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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…
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…
Tracers of Chromospheric Structure I: Observations of Ca II K and H alpha in M Dwarfs
Lucianne M. Walkowicz, Suzanne L. Hawley
We report on our observing program to capture simultaneous spectra of Ca II and Balmer lines in a sample of nearby M3 dwarfs. Our goal is to investigate the chromospheric temperatu…
Our Nearest 15 Million Neighbors: The Field Low-Mass Stellar Luminosity and Mass Functions
John J. Bochanski, Suzanne L. Hawley, I. Neill Reid +4
We report on a new measurement of the luminosity function (LF) and mass function (MF) of field low-mass dwarfs using Sloan Digital Sky Survey (SDSS) photometry. The final catalog i…
The Properties of Long-Period Variables in the Large Magellanic Cloud from MACHO
Oliver J. Fraser, Suzanne L. Hawley, Kem H. Cook
We present a new analysis of the long-period variables in the Large Magellanic Cloud (LMC) from the MACHO Variable Star Catalog. Three-quarters of our sample of evolved, variable s…