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82 papers · 1 filter
Photometric Properties of the Near-contact Binary GW Geminorum
Jae Woo Lee, Seung-Lee Kim, Chung-Uk Lee +4
New multiband CCD photometry is presented for the eclipsing binary GW Gem; the light curves are the first ever compiled. Four new minimum timings have been determined. Our ana…
Transient jets in the symbiotic prototype Z Andromedae
A. Skopal, T. Pribulla, J. Budaj +6
We present development of the collimated bipolar jets from the symbiotic prototype Z And that appeared and disappeared during its 2006 outburst. In 2006 July Z And reached its hist…
Secular Evolution of HD 12661: A System Caught at an Unlikely Time
Dimitri Veras, Eric B. Ford
The eccentricity evolution of multiple planet systems can provide valuable constraints on planet formation models. Unfortunately, the inevitable uncertainties in the current orbita…
The Metallicity Distribution of Distant F and G type stars in the CFHT Legacy Survey Deep Field
Y. Karatas, M. Kilic, O. Gunes +1
We study the metal abundances of F and G type stars in the Galactic disk and halo using the Canada-France-Hawaii Telescope Legacy Survey D4 field. For a sample of stars within 7 kp…
Carbon Abundances of Three Carbon-Enhanced Metal-Poor Stars from High-Resolution Gemini-S/bHROS Spectra of the 8727A [C I] Line
S. C. Schuler, S. J. Margheim, T. Sivarani +4
We present the results from an analysis of the 8727ang forbidden [C I] line in high-resolution Gemini-S/bHROS spectra of three CEMP stars. We find the [C/Fe] ratios based on the [C…
A blueprint for detecting supersymmetric dark matter in the Galactic halo
Volker Springel, Simon D. M. White, Carlos S. Frenk +6
Dark matter is the dominant form of matter in the universe, but its nature is unknown. It is plausibly an elementary particle, perhaps the lightest supersymmetric partner of known…