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94 papers · 1 filter
Detection of solar-like oscillations from Kepler photometry of the open cluster NGC 6819
Dennis Stello, Sarbani Basu, Hans Bruntt +49
Asteroseismology of stars in clusters has been a long-sought goal because the assumption of a common age, distance and initial chemical composition allows strong tests of the theor…
The Calan-Hertfordshire Extrasolar Planet Search
J. S. Jenkins, H. R. A. Jones, K. Gozdziewski +7
The detailed study of the exoplanetary systems HD189733 and HD209458 has given rise to a wealth of exciting information on the physics of exoplanetary atmospheres. To further our u…
A study of the galaxy redshift distribution toward the cosmic microwave background cold spot in the Corona Borealis supercluster
Ricardo Génova-Santos, Carmen P. Padilla-Torres, José Alberto Rubiño-Martín +2
We present a study of the spatial and redshift distributions of Sloan Digital Sky Survey (SDSS) galaxies toward the position of CrB-H, a very deep and extended decrement in the Cos…
The chemical composition of the Orion star forming region: I. Homogeneity of O and Si abundances in B-type stars
S. Simón-Díaz
Recent accurate abundance analyses of B-type main sequence stars in the solar vicinity has shown that abundances derived from these stellar objects are more homogeneous and metal-r…
GTC Osiris spectroscopic identification of a faint L subdwarf in the UKIRT Infrared Deep Sky Survey
N. Lodieu, M. R. Zapatero Osorio, E. L. Martin +2
We present the discovery of an L subdwarf in 234 square degrees common to the UK Infrared Telescope (UKIRT) Infrared Deep Sky Survey Large Area Survey Data Release 2 and the Sloan…
An Effective temperature calibration for solar type stars using equivalent width ratios - A fast and easy spectroscopic temperature estimation
S. G. Sousa, A. Alapini, G. Israelian +1
Aims: The precise determination of the stellar effective temperature of solar type stars is of extreme importance for Astrophysics. We present an effective temperature calibration…