26 citations · 71 across the 4 of their papers we have counts for
6 papers
Search for vertical stratification of metals in atmospheres of blue horizontal-branch stars
V. R. Khalack, F. LeBlanc, B. B. Behr +2
The observed abundance peculiarities of many chemical species relative to the expected cluster metallicity in blue horizontal-branch (BHB) stars presumably appear as a result of at…
Vertical abundance stratification in the blue horizontal branch star HD135485
V. R. Khalack, F. LeBlanc, D. Bohlender +2
It is commonly believed that the observed overabundances of many chemical species relative to the expected cluster metallicity in blue horizontal branch (BHB) stars appear as a res…
Initial Results from the USNO Dispersed Fourier Transform Spectrograph
Arsen R. Hajian, Bradford B. Behr, Andrew T. Cenko +15
We have designed and constructed a ``dispersed Fourier Transform Spectrometer'' (dFTS), consisting of a conventional FTS followed by a grating spectrometer. By combining these two…
Rotation Velocities of Red and Blue Field Horizontal-Branch Stars
Bradford B. Behr
We present measurements of the projected stellar rotation velocities (v sin i) of a sample of 45 candidate field horizontal-branch (HB) stars spanning a wide range of effective tem…
Chemical Abundances and Rotation Velocities of Blue Horizontal-Branch Stars in Six Globular Clusters
Bradford B. Behr
High-resolution spectroscopic measurements of blue horizontal-branch stars in six metal-poor globular clusters -- M3, M13, M15, M68, M92, and NGC 288 -- reveal remarkable variation…
Rotation and abundance anomalies in blue horizontal-branch stars
Bradford Behr
To address the puzzling photometric properties of horizontal branch stars in Galactic GCs, several different groups have undertaken detailed spectroscopic analyses of individual bl…