170 citations · 697 across the 22 of their papers we have counts for
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Échelle Spectroscopy of the Chemically Peculiar Star Ori F
Rafael Costero, Christine Allen, Alex Ruelas-Mayorga +4
We analyse Échelle spectra of Ori F obtained by us on six nights unevenly distributed along six years; we identify several hundred spectral lines and measure, for the first t…
The Importance of Historical Measures for Dynamical Models of the Evolution of Trapezium-type Multiple Systems
Christine Allen, Leonardo J. Sanchez, Alex Ruelas-Mayorga +1
As an illustration of the value of historical measures we present some examples of the dynamical evolution of multiple systems resembling the Orion Trapezium. We constructed models…
Variable stars in Palomar 13; an evaporating globular cluster
M. A. Yepeza, A. Arellano Ferro, K. P. Schroeder +3
We present new CCD photometry of the distant globular cluster Pal 13. Fourier decomposition of the light curves of the three cluster member RRab stars lead to estimations of […
The Dynamical Evolution of Multiple Systems of Trapezium Type
Christine Allen, Alex Ruelas-Mayorga, Leonardo J. Sánchez +1
We have selected archival observational data for several O and B trapezia in the Milky Way. For each of the main components of the trapezia we obtained transverse velocities from t…
An improved catalog of halo wide binary candidates
Christine Allen, Miguel A. Monroy-Rodríguez
We present an improved catalog of halo wide binaries, compiled from an extensive literature search. Most of our binaries stem from the common proper motion binary catalogs by Allen…