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18 papers · 2 filters
Evidence of a massive planet candidate orbiting the young active K5V star BD+20 1790
M. Hernán-Obispo, M. C. Gálvez-Ortiz, G. Anglada-Escudé +4
BD+20 1790 is a young active, metal-rich, late-type K5Ve star. We have undertaken a study of stellar activity and kinematics for this star over the past few years. Previous results…
A Super-Earth and two Neptunes Orbiting the Nearby Sun-like star 61 Virginis
Steven S. Vogt, Robert A. Wittenmyer, R. Paul Butler +10
We present precision radial velocity (RV) data that reveal a multiple exoplanet system orbiting the bright nearby G5V star 61 Virginis. Our 4.6 years of combined Keck/HIRES and Ang…
A Super-Earth Orbiting the Nearby Sun-like Star HD 1461
Eugenio J. Rivera, R. Paul Butler, Steven S. Vogt +3
We present precision radial velocity data that reveal a Super-Earth mass planet and two probable additional planets orbiting the bright nearby G0V star HD 1461. Our 12.8 years of K…
Day-side z'-band emission and eccentricity of Wasp-12b
Mercedes Lopez-Morales, Jeffrey L. Coughlin, David K. Sing +5
We report the detection of the eclipse of the very-hot Jupiter WASP-12b via z'-band time-series photometry obtained with the 3.5-meter ARC telescope at Apache Point Observatory. We…
Jupiter - friend or foe? III: the Oort cloud comets
J Horner, B W Jones, J Chambers
It has long been assumed that the planet Jupiter acts as a giant shield, significantly lowering the impact rate of small bodies on the Earth. However, until recently, very little w…
Triggering Collapse of the Presolar Dense Cloud Core and Injecting Short-Lived Radioisotopes with a Shock Wave. I. Varied Shock Speeds
Alan P. Boss, Sandra A. Keiser, Sergei I. Ipatov +2
The discovery of decay products of a short-lived radioisotope (SLRI) in the Allende meteorite led to the hypothesis that a supernova shock wave transported freshly synthesized SLRI…