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Variability in SSTc2d J163134.1-240100, a brown dwarf with quasi-spherical mass loss
Aleks Scholz, Koraljka Muzic, Victor Almendros-Abad +4
We report on a search for variability in the young brown dwarf SST1624 (~M7 spectral type, M~0.05Msol), previously found to feature an expanding gaseous shell and to undergo quasi-…
The CARMENES search for exoplanets around M dwarfs: High-resolution optical and near-infrared spectroscopy of 324 survey stars
A. Reiners, M. Zechmeister, J. A. Caballero +170
The CARMENES radial velocity (RV) survey is observing 324 M dwarfs to search for any orbiting planets. In this paper, we present the survey sample by publishing one CARMENES spectr…
M dwarf search for pulsations within Kepler GO program
C. Rodríguez-López, J. E. Gizis, J. MacDonald +2
We present the analysis of four M dwarf stars -plus one M giant that seeped past our selection criteria- observed in Cycle 3 of Kepler Guest Observer program (GO3) in a search for…
The theoretical instability strip of M dwarf stars
C. Rodríguez-López, J. MacDonald, P. J. Amado +2
The overstability of the fundamental radial mode in M dwarf models was theoretically predicted by Rodríguez-López et al. (2012). The periods were found to be in the ranges ~25-40 m…
Pulsations in M dwarf stars
C. Rodríguez-López, J. MacDonald, A. Moya
We present the results of the first theoretical non-radial non-adiabatic pulsational study of M dwarf stellar models with masses in the range 0.1 to 0.5M_solar. We find the fundame…
Modeling the System Parameters of 2M1533+3759: A New Longer-Period Low-Mass Eclipsing sdB+dM Binary
B. -Q. For, E. M. Green, G. Fontaine +17
We present new photometric and spectroscopic observations for 2M 1533+3759 (= NSVS 07826147). It has an orbital period of 0.16177042 day, significantly longer than the 2.3--3.0 hou…