72 citations · 177 across the 6 of their papers we have counts for
6 papers
HD 35502: a hierarchical triple system with a magnetic B5IVpe primary
James Sikora, Gregg Wade, David Bohlender +8
We present our analysis of HD~35502 based on high- and medium-resolution spectropolarimetric observations. Our results indicate that the magnetic B5IVsnp star is the primary compon…
HD 18078: A very slowly rotating Ap star with an unusual magnetic field structure
G. Mathys, I. I. Romanyuk, D. O. Kudryavtsev +3
Context. The existence of a significant population of Ap stars with very long rotation periods (up to several hundred years) has progressively emerged over the past two decades. Ho…
A Five-year Spectroscopic and Photometric Campaign on the Prototypical alpha Cygni Variable and A-type Supergiant Star Deneb
N. D. Richardson, N. D. Morrison, E. E. Kryukova +1
Deneb is often considered the prototypical A-type supergiant, and is one of the visually most luminous stars in the Galaxy. A-type supergiants are potential extragalactic distance…
High resolution spectroscopic study of red clump stars in the Galaxy: iron group elements
E. Puzeras, G. Tautvaisiene, J. G. Cohen +4
The main atmospheric parameters and abundances of the iron group elements (vanadium, chromium, iron, cobalt and nickel) are determined for 62 red giant "clump" stars revealed in th…
Weather in stellar atmosphere: the dynamics of mercury clouds in alpha Andromedae
Oleg Kochukhov, Saul J. Adelman, Austin F. Gulliver +1
The formation of long-lasting structures at the surfaces of stars is commonly ascribed to the action of strong magnetic fields. This paradigm is supported by observations of evolvi…
The HgMn Binary Star Phi Herculis: Detection and Properties of the Secondary and Revision of the Elemental Abundances of the Primary
R. T. Zavala, S. J. Adelman, C. A. Hummel +6
Observations of the Mercury-Manganese star Phi Herculis with the Navy Prototype Optical Interferometer (NPOI) conclusively reveal the previously unseen companion in this single-lin…