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289 papers · 1 filter
Twins Among the Low Mass Spectroscopic Binaries
M. Simon, R. C. Obbie
We report an analysis of twins of spectral types F or later in the 9th Catalog of Spectroscopic Binaries (SB9). Twins, the components of binaries with mass ratio within 2% of 1.0,…
Spin Needlets for Cosmic Microwave Background Polarization Data Analysis
Daryl Geller, Frode K. Hansen, Domenico Marinucci +2
Scalar wavelets have been used extensively in the analysis of Cosmic Microwave Background (CMB) temperature maps. Spin needlets are a new form of (spin) wavelets which were introdu…
Nearby young stars selected by proper motion. I. Four new members of the Beta Pictoris moving group from the Tycho-2 catalog
Sebastien Lepine, Michal Simon
We describe a procedure to identify stars from nearby moving groups and associations out of catalogs of stars with large proper motions. We show that from the mean motion vector of…
Turbulence-Flame Interactions in Type Ia Supernovae
A. J. Aspden, J. B. Bell, M. S. Day +2
The large range of time and length scales involved in type Ia supernovae (SN Ia) requires the use of flame models. As a prelude to exploring various options for flame models, we co…
The stellar association around Gamma Velorum and its relationship with Vela OB2
R. D Jeffries, Tim Naylor, F. M. Walter +2
We present the results of a photometric BVI survey of 0.9 square degrees around the Wolf-Rayet binary gamma^2 Vel and its early-type companion gamma^1 Vel. Several hundred PMS star…
The Palomar/Keck Adaptive Optics Survey of Young Solar Analogs: Evidence for a Universal Companion Mass Function
Stanimir Metchev, Lynne Hillenbrand
We present results from an adaptive optics survey for substellar and stellar companions to Sun-like stars. The survey targeted 266 F5-K5 stars in the 3Myr to 3Gyr age range with di…