Cool Subdwarf Investigations II: Multiplicity (2009)
Jao, Wei-Chun, Mason, Brian D., Hartkopf, William I, Henry, Todd J., Ramos, Stephanie N.
Cool subdwarfs of types K and M are the fainter counterparts of cool main sequence dwarfs that dominate the Galactic population. In this paper we present the results of an optical speckle survey of...
The High Angular Resolution Multiplicity of Massive Stars (2008)
Mason, Brian D., Hartkopf, William I., Gies, Douglas R., Henry, Todd J., Helsel, John W.
We present the results of a speckle interferometric survey of Galactic massive stars that complements and expands upon a similar survey made over a decade ago. The speckle observations were made with...
Raghavan, Deepak, McAlister, Harold A., Torres, Guillermo, Latham, David W., Mason, Brian D., Boyajian, Tabetha S., ...
We present an updated spectroscopic orbit and a new visual orbit for the double-lined spectroscopic binary \sigma^2 Coronae Borealis based on radial velocity measurements at the Oak Ridge Observatory...
Direct Detection of the Close Companion of Polaris with the Hubble Space Telescope (2008)
Evans, Nancy Remage, Schaefer, Gail H., Bond, Howard E., Bono, Giuseppe, Karovska, Margarita, Nelan, Edmund, ...
Polaris, the nearest and brightest classical Cepheid, is a single-lined spectroscopic binary with an orbital period of 30 years. Using the High Resolution Channel of the Advanced Camera for Surveys...
Turner, Nils H., Brummelaar, Theo A. Ten, Roberts Jr., Lewis C., Mason, Brian D., Hartkopf, William I., Gies, Douglas R.
We present the results of an adaptive optics survey for faint companions among Galactic O-type star systems (V < 8) using the Advanced Electro-Optical System (AEOS) 3.6-meter telescope on Haleakala....
Two Suns in The Sky: Stellar Multiplicity in Exoplanet Systems (2006)
Raghavan, Deepak, Henry, Todd J., Mason, Brian D., Subasavage, John P., Jao, Wei-Chun, Beaulieu, Thom D., ...
We present results of a reconnaissance for stellar companions to all 131 radial-velocity-detected candidate extrasolar planetary systems known as of July 1, 2005. CPM companions were investigated...
Addressing confusion in double star nomenclature: the Washington multiplicity catalog (2004)
Hartkopf, William I., Mason, Brian D.
Los avances en la instrumentacion y la reduccion de datos estan borrando las diferencias historicas entre los diversos tipos de estrellas dobles. Un resultado de ello es la creciente confusion en la...
Speckle Interferometry at the US Naval Observatory, IX (1998)
Mason, Brian D., Hartkopf, William I., Wycoff, Gary L., Pascu, Dan, Urban, Sean E.
The results of 3056 speckle interferometric observations of double stars made with the 26 inch (66 cm) refractor of the US Naval Observatory are presented. Each speckle interferometric observation of...