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12 papers · 2 filters
Observations of the pulsating subdwarf B star Feige 48: Constraints on evolution and companions
M. D. Reed, S. D. Kawaler
Since pulsating subdwarf B (sdBV or EC14026) stars were first discovered (Kilkenny et al, 1997), observational efforts have tried to realize their potential for constraining the in…
Constraints on the Very High Energy Emission from BL Lacertae Objects
D. Horan
We present results from observations of 29 BL Lacertae objects, taken with the Whipple Observatory 10 m Gamma-Ray Telescope between 1995 and 2000. The observed objects are mostly a…
Continuous and Burst-like Accretion onto Substellar Companions in Mira Winds
Curtis Struck, Babak E. Cohanim, Lee Anne Willson
We present numerical hydrodynamical modeling of the effects of a giant planet or brown dwarf companion orbiting within the extended atmosphere and wind formation zone of an approxi…
Search for High Energy Gamma Rays from an X-ray Selected Blazar Sample
I. de la Calle Perez, the VERITAS Collaboration
Our understanding of blazars has been greatly increased in recent years by extensive multi-wavelength observations, particularly in the radio, X-ray and gamma-ray regions. Over the…
Mass and Angular Momentum Transfer in the Massive Algol Binary RY Persei
P. Barai, D. R. Gies, E. Choi +12
We present an investigation of H-alpha emission line variations observed in the massive Algol binary, RY Per. We give new radial velocity data for the secondary based upon our opti…
A Re-evaluation of the Super Li-rich Star in NGC 6633
C. Laws, G. Gonzalez
We present a new abundance analysis of the super Li-rich star J37 and a comparison star in NGC 6633. We confirm the result of Deliyannis et al. that J37 has a Li abundance well abo…