7.1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Institute of Astrophysics and Space SciencesPT1.3k papers
- Centre National de la Recherche ScientifiqueFR1.1k papers
- Centro de Astrofísica da Universidade do PortoPT1k papers
- University of GenevaCH637 papers
- Instituto de Astrofísica de CanariasES591 papers
- Universidad de La LagunaES520 papers
- European Southern ObservatoryCL447 papers
- Aix-Marseille UniversitéFR435 papers
- University of LisbonPT430 papers
- Institut d'Astrophysique de ParisFR425 papers
- University of CambridgeGB399 papers
- Leiden UniversityNL398 papers
30 papers · 2 filters
Spitzer--IRAC Imagery and Photometry of Ultracompact HII Regions With Extended Emission
E. de la Fuente, A. Porras, J. M. C. Grave +6
We present the results of a morphological study performed to a sample of Ultracompact (UC) HII regions with Extended Emission (EE) using Spitzer--IRAC imagery and 3.6 cm VLA conf.…
No evidence for mass segregation in massive young clusters
J. Ascenso, J. Alves, M. T. V. T. Lago
Aims. We investigate the validity of the mass segregation indicators commonly used in analysing young stellar clusters. Methods. We simulate observations by constructing synthetic…
The Seventh Data Release of the Sloan Digital Sky Survey
K. Abazajian
This paper describes the Seventh Data Release of the Sloan Digital Sky Survey (SDSS), marking the completion of the original goals of the SDSS and the end of the phase known as SDS…
Solar-like oscillations in the G8 V star tau Ceti
T. C. Teixeira, H. Kjeldsen, T. R. Bedding +8
We used HARPS to measure oscillations in the low-mass star tau Cet. Although the data were compromised by instrumental noise, we have been able to extract the main features of the…
Lithium abundances in exoplanet-host stars : modelling
M. Castro, S. Vauclair, O. Richard +1
Aims. Exoplanet-host stars (EHS) are known to present superficial chemical abundances different from those of stars without any detected planet (NEHS). EHS are, on the average, ove…
Galaxy evolution in Abell 85: I. Cluster substructure and environmental effects on the blue galaxy population
H. Bravo-Alfaro, C. A. Caretta, C. Lobo +2
This series of papers explores the evolution of late-type galaxies in the rich cluster Abell 85. Here, we revisit the complex dynamical state of A 85 by using independent methods.…
The VVDS-VLA Deep Field - IV: Radio-optical properties
S. Bardelli, E. Zucca, M. Bolzonella +51
(abridged) We use the 1.4 GHz VIMOS-VLA Deep Survey and the optical VVDS and the CFHT-LS to compare the properties of radio loud galaxies with respect to the whole population of op…
Another forbidden solar oxygen abundance: the [O I] 5577 A line
Jorge Melendez, Martin Asplund
Context: Recent works with improved model atmospheres, line formation, atomic and molecular data, and detailed treatment of blends, have resulted in a significant downward revision…
Cluster scaling relations from cosmological hydrodynamic simulations in dark energy dominated universe
N. Aghanim, A. C. da Silva, N. J. Nunes
Clusters are potentially powerful tools for cosmology provided their observed properties such as the Sunyaev-Zel'dovich (SZ) or X-ray signals can be translated into physical quanti…
Optical configuration and analysis of the AMBER/VLTI instrument
S. Robbe-Dubois, S. Lagarde, R. G. Petrov +23
This paper describes the design goals and engineering efforts that led to the realization of AMBER (Astronomical Multi BEam combineR) and to the achievement of its present performa…
Dark matter from cosmic defects on galactic scales?
N. Guerreiro, P. P. Avelino, J. P. M. de Carvalho +1
We discuss the possible dynamical role of extended cosmic defects on galactic scales, specifically focusing on the possibility that they may provide the dark matter suggested by th…
The VIMOS VLT Deep Survey :Evolution of the major merger rate since z~1 from spectroscopicaly confirmed galaxy pairs
L. de Ravel, O. Le Fèvre, L. Tresse +48
From the VIMOS VLT Deep Survey we use a sample of 6447 galaxies with I_{AB} < 24 to identify 251 pairs of galaxies, each member with a secure spectroscopic redshift, which are clos…
Abundances of four open clusters from solar stars
G. Pace, L. Pasquini, P. François
We present the abundance measurements of several elements (Fe, Ca, Na, Ni, Ti, Al, Cr, Si) for 20 solar--type stars belonging to four Galactic open clusters: NGC 3680, IC 4651, Pra…
Spectroscopic parameters for 451 stars in the HARPS GTO planet search program. Stellar [Fe/H] and the frequency of exo-Neptunes
S. G. Sousa, N. C. Santos, M. Mayor +6
To understand the formation and evolution of solar-type stars in the solar neighborhood, we need to measure their stellar parameters to high accuracy. We present a catalogue of acc…
Dynamics of Biased Domain Walls and the Devaluation Mechanism
P. P. Avelino, C. J. A. P. Martins, L. Sousa
We study the evolution of biased domain walls in the early universe. We explicitly discuss the roles played by the surface tension and volume pressure in the evolution of the walls…
DARWIN - A Mission to Detect, and Search for Life on, Extrasolar Planets
C. S. Cockell, A. Leger, M. Fridlund +47
The discovery of extra-solar planets is one of the greatest achievements of modern astronomy. The detection of planets with a wide range of masses demonstrates that extra-solar pla…
The CoRoT Evolution and Seismic Tools Activity: Goals and Tasks
Y. Lebreton, M. J. P. F. G. Monteiro, J. Montalban +9
The forthcoming data expected from space missions such as CoRoT require the capacity of the available tools to provide accurate models whose numerical precision is well above the e…
On the cosmological evolution of alpha and mu and the dynamics of dark energy
P. P. Avelino
We study the cosmological evolution of the fine structure constant, , and the proton-to-electron mass ratio, , in the context of a generic class of models where the g…
Porto Oscillation Code (POSC)
Mario J. P. F. G. Monteiro
The Porto Oscillation Code (POSC) has been developed in 1995 and improved over the years, with the main goal of calculating linear adiabatic oscillations for models of solar-type s…
AsteroFLAG: first results from hare-and-hounds Exercise 1
W. J. Chaplin, T. Appourchaux, T. Arentoft +15
We report on initial results from the first phase of Exercise 1 of the asteroFLAG hare and hounds. The asteroFLAG group is helping to prepare for the asteroseismology component of…
Estimation of stellar parameters using Monte Carlo Markov Chains
M. Bazot, S. Bourguignon, J. Christensen-Dalsgaard
We apply Monte Carlo Markov Chain methods to the stellar parameter estimation problem. This technique is useful when dealing with non-linear models and allows to derive realistic e…
Grids of stellar evolution models for asteroseismology (CESAM + POSC)
J. P. Marques, M. J. P. F. G. Monteiro, J. M. Fernandes
In this paper we present a grid of stellar evolution models, computed with an up-to-date physical description of the internal structure, using the Code d'Evolution Stellaire Adapta…
The exoplanet-host star iota Horologii: an evaporated member of the primordial Hyades cluster
S. Vauclair, M. Laymand, F. Bouchy +4
We show that the exoplanet-host star iota Horologii, alias HD17051, which belongs to the so-called Hyades stream, was formed within the primordial Hyades stellar cluster and has ev…
The fundamental parameters of the roAp star alpha Circini
H. Bruntt, J. R. North, M. Cunha +12
We have used the Sydney University Stellar Interferometer (SUSI) to measure the angular diameter of alpha Cir. This is the first detailed interferometric study of a rapidly oscilla…