S. Catalán

Publications60
h-index15
Citations952
Highly Influential Citations115
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The initial–final mass relationship of white dwarfs revisited: effect on the luminosity function and mass distribution
The initial-final mass relationship connects the mass of a white dwarf with the mass of its progenitor in the main-sequence. Although this function is of fundamental importance to several fields in…
Evolution of the Solar Activity Over Time and Effects on Planetary Atmospheres. II. κ1 Ceti, an Analog of the Sun when Life Arose on Earth
The early evolution of Earth's atmosphere and the origin of life took place at a time when physical conditions at the Earth were radically different from its present state. The radiative input from…
The initial-final mass relationship from white dwarfs in common proper motion pairs
Context. The initial-final mass relationship of white dwarfs, which is poorly constrained, is of paramount importance for different aspects of modern astrophysics. From an observational perspective,…
WTS-2 b: a hot Jupiter orbiting near its tidal destruction radius around a K dwarf
We report the discovery of WTS-2 b, an unusually close-in 1.02-d hot Jupiter (M-P = 1.12M(J), R-P = 1.30R(J)) orbiting a K2V star, which has a possible gravitationally bound M-dwarf companion at 0.6…
The substellar companion in the eclipsing white dwarf binary SDSS J141126.20+200911.1
We present high time resolution SDSS-g′ and SDSS-z′ light curves of the primary eclipse in SDSS J141126.20+200911.1, together with time-resolved X-Shooter spectroscopy and near-infrared (NIR) JHKs…
Discovery of the benchmark metal-poor T8 dwarf BD +01° 2920B
We have searched the WISE first data release for widely separated (610,000AU) late T dwarf companions to Hipparcos and Gliese stars. We have discovered a new binary system containing a K-band…
Axions and the cooling of white dwarf stars
W hite dwarfsare the end productofthe lifes ofinterm ediate-and low-m assstarsand their evolution is described as a sim ple cooling process. Recently,it has been possible to determ ine with an…
Axion cooling of white dwarfs
The cooling rate of the white dwarf star G117-B15A has been recently measured using asteroseismological techniques. It has been found that it is higher than predicted from current theoretical models.…
The ESO supernovae type Ia progenitor survey (SPY)
Close double degenerate binaries are one of the favoured progenitor channels for type Ia supernovae, but it is unclear how many suitable systems there are in the Galaxy. We report results of a large…
A spectroscopic and proper motion search of Sloan Digital Sky Survey: red subdwarfs in binary systems
Red subdwarfs in binary systems are crucial for both model calibration and spectral classification. We search for red subdwarfs in binary systems from a sample of high proper motion objects with…
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