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26 papers · 2 filters
Hints for a fast precessing relativistic radio jet in LS I +61 303
M. Massi, M. Ribo, J. M. Paredes +3
Here we discuss two consecutive MERLIN observations of the X-ray binary LS I +61 303. The first observation shows a double-sided jet extending up to about 200 AU on both sides of a…
Forecasting Cosmic Doomsday from CMB/LSS Cross-Correlations
Jaume Garriga, Levon Pogosian, Tanmay Vachaspati
A broad class of dark energy models, which have been proposed in attempts at solving the cosmological constant problems, predict a late time variation of the equation of state with…
Effective temperatures and radii of planet-hosting stars from IR photometry
I. Ribas, E. Solano, E. Masana +1
In this paper we present and analyse determinations of effective temperatures of planet-hosting stars using infrared (IR) photometry. One of our goals is the comparison with spectr…
The 3-Dimensional Structure of HH 32 from GMOS IFU Spetroscopy
Tracy L. Beck, A. Riera, A. C. Raga +1
We present new high resolution spectroscopic observations of the Herbig-Haro object HH 32 from System Verification observations made with the GMOS IFU at Gemini North Observatory.…
New Constraints on , , and w from an Independent Set of Eleven High-Redshift Supernovae Observed with HST
R. A. Knop, G. Aldering, R. Amanullah +45
We report measurements of , , and w from eleven supernovae at z=0.36-0.86 with high-quality lightcurves measured using WFPC-2 on the HST. This is an independent set of hi…
Tycho Brahe's supernova: light from centuries past
Pilar Ruiz-Lapuente
The light curve of SN 1572 is described in the terms used nowadays to characterize SNeIa. By assembling the records of the observations done in 1572--74 and evaluating their uncert…