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Fundamental Properties of Low-Mass Stars and Brown Dwarfs
Michael C. Liu, Keivan G. Stassun, France Allard +7
Precise measurements of the fundamental properties of low-mass stars and brown dwarfs are key to understanding the physics underlying their formation and evolution. While there has…
A Survey for a Coeval, Comoving Group Associated with HD 141569
Alicia N. Aarnio, Alycia J. Weinberger, Keivan G. Stassun +2
We present results of a search for a young stellar moving group associated with the star HD 141569, a nearby, isolated Herbig AeBe primary member of a 5+/-3 Myr-old triple star sys…
Surprising dissimilarities in a newly formed pair of 'identical twin' stars
Keivan G. Stassun, Robert D. Mathieu, Phillip A. Cargile +3
The mass and chemical composition of a star are the primary determinants of its basic physical properties--radius, temperature, luminosity--and how those properties evolve with tim…
Stellar Rotation in M35: Mass-Period Relations, Spin-Down Rates, and Gyrochronology
Søren Meibom, Robert D. Mathieu, Keivan G. Stassun
We present the results of a 5 month photometric time-series survey for stellar rotation over a 40'x40' field on the 150 Myr open cluster M35. We report rotation periods for 441 sta…
The Pre-Main-Sequence Eclipsing Binary ASAS J052821+0338.5
H. C. Stempels, L. Hebb, K. G. Stassun +4
In this paper we present the first results of a detailed spectroscopic and photometric analysis of the V = 11.7m eclipsing binary ASAS J052821+0338.5. With the FIES spectrograph at…
Detection of strong activity in the eclipsing binary brown dwarf 2MASSJ05352184-0546085 - A possible explanation for the temperature reversal
A. Reiners, A. Seifahrt, K. G. Stassun +2
We show high resolution spectra of the eclipsing brown dwarf binary 2MASSJ05352184-0546085 taken at the two opposite radial velocity maxima. Comparisons of the TiO bands to model a…