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astro-ph2008★ 18 cited
Time variation of the electron mass in the early universe and the Barrow-Magueijo model
Claudia G. Scóccola, Mercedes E. Mosquera, Susana J. Landau +1
We put limits on the time variation of the electron mass in the early universe using observational primordial abundances of D, He4 and Li7, recent data from the Cosmic Microwave Ba…
astro-ph2007★ 180 cited
Fluxes in Hαand Ca II H and K for a sample of Southern stars
Carolina Cincunegui, Rodrigo F. Díaz, Pablo J. D. Mauas
The main chromospheric activity indicator is the S index, which is esentially the ratio of the flux in the core of the Ca II H and K lines to the continuum nearby, and is well stud…