7.1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Universidade do PortoPT1.3k papers
- Centre National de la Recherche ScientifiqueFR1k papers
- University of LisbonPT992 papers
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- Universidad de La LagunaES521 papers
- Leiden UniversityNL495 papers
- Sorbonne UniversitéFR492 papers
- Aix-Marseille UniversitéFR480 papers
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- Institut d'Astrophysique de ParisFR446 papers
140 papers · 1 filter
The continuous rise of bulges out of galactic disks
I. Breda, P. Papaderos
(abridged) This study revolves around dmB, a new distance- and extinction-independent measure of the contribution by stellar populations older than 9 Gyr to the mean r-band surface…
Arp 202: a TDG formed in a parent's extended dark matter halo?
T. C. Scott, P. Lagos, S. Ramya +6
We report on H + [NII] imaging of the Arp 202 interacting pair and its tidal dwarf galaxy (TDG) candidate as well as a GMOS long slit spectrum from the TDG candidate, observed w…
HERUS: The Far-IR/Submm Spectral Energy Distributions of Local ULIRGs & Photometric Atlas
D. L. Clements, C. Pearson, D. Farrah +9
We present the Herschel-SPIRE photometric atlas for a complete flux limited sample of 43 local Ultraluminous Infrared Galaxies (ULIRGs), selected at 60m by IRAS, as part of the…
Line-dependent veiling in very active T Tauri Stars
A. C. S. Rei, P. P. Petrov, J. F. Gameiro
The T Tauri stars with active accretion disks show veiled photospheric spectra. This is supposedly due to non-photospheric continuum radiated by hot spots beneath the accretion sho…
Using the phase shift to asymptotically characterize the dipolar mixed modes in post-main-sequence stars
C. Jiang, J. Christensen-Dalsgaard, M. Cunha
Mixed modes have been extensively observed in post-main-sequence stars by the Kepler and CoRoT space missions. The mixture of the p and g modes can be measured by the dimensionless…
Distinguishing the albedo of exoplanets from stellar activity
L. M. Serrano, S. C. C. Barros, M. Oshagh +5
Light curves show the flux variation from the target star and its orbiting planets as a function of time. In addition to the transit features created by the planets, the flux also…
The RoPES project with HARPS and HARPS-N. I. A system of super-Earths orbiting the moderately active K-dwarf HD 176986
A. Suárez Mascareño, J. I. González Hernández, R. Rebolo +12
We report the discovery of a system of two super-Earths orbiting the moderately active K-dwarf HD 176986. This work is part of the RoPES RV program of G- and K-type stars, which co…
Slicing COSMOS with SC4K: the evolution of typical Lya emitters and the Lya escape fraction from z~2 to z~6
David Sobral, Sérgio Santos, Jorryt Matthee +4
We present and explore deep narrow- and medium-band data obtained with the Subaru and the Isaac Newton telescopes in the ~2 deg COSMOS field. We use these data as an extremely…
Testing gravity on cosmological scales with cosmic shear, cosmic microwave background anisotropies, and redshift-space distortions
Agnès Ferté, Donnacha Kirk, Andrew R. Liddle +1
We use a range of cosmological data to constrain phenomenological modifications to general relativity on cosmological scales, through modifications to the Poisson and lensing equat…
Bulgeless galaxies in the COSMOS field: environment and star formation evolution at
M. Grossi, C. A. C. Fernandes, D. Sobral +5
Combining the catalogue of galaxy morphologies in the COSMOS field and the sample of H emitters at redshifts and of the HiZELS survey, we selected 220 st…
The MUSE 3D view of feedback in a high-metallicity radio galaxy at z = 2.9
M. Silva, A. Humphrey, P. Lagos +8
We present a detailed study of the kinematic, chemical and excitation properties of the giant Ly emitting nebula and the giant \ion{H}{I} absorber associated with the …
Deriving High-Precision Radial Velocities
Pedro Figueira
This chapter describes briefly the key aspects behind the derivation of precise radial velocities. I start by defining radial velocity precision in the context of astrophysics in g…
The influence of metallicity on stellar differential rotation and magnetic activity
Christoffer Karoff, Travis S. Metcalfe, Angela R. G. Santos +20
Observations of Sun-like stars over the last half-century have improved our understanding of how magnetic dynamos, like that responsible for the 11-year solar cycle, change with ro…
The Gaia-ESO Survey: open clusters in Gaia-DR1 - a way forward to stellar age calibration
S. Randich, E. Tognelli, R. Jackson +42
We describe the methodologies that, taking advantage of Gaia-DR1 and the Gaia-ESO Survey data, enable the comparison of observed open star cluster sequences with stellar evolutiona…
Ionised gas structure of 100 kpc in an over-dense region of the galaxy group COSMOS-Gr30 at z ~ 0.7
Benoît Epinat, Thierry Contini, Hayley Finley +16
We report the discovery of a 10^4 kpc^2 gaseous structure detected in [OII] in an over-dense region of the COSMOS-Gr30 galaxy group at z~0.725 thanks to deep MUSE Guaranteed Time O…
A temperate exo-Earth around a quiet M dwarf at 3.4 parsecs
Xavier Bonfils, Nicola Astudillo-Defru, Rodrigo Díaz +12
The combination of high-contrast imaging and high-dispersion spectroscopy, which has successfully been used to detect the atmosphere of a giant planet, is one of the most promising…
A 100 kpc nebula associated with the "Teacup" fading quasar
Montserrat Villar Martin, Antonio Cabrera Lavers, Andrew Humphrey +4
We report the discovery of a ~100 kpc ionized nebula associated with the radio quiet type 2 quasar (QSO2) nicknamed the "Teacup" (z=0.085). The giant nebula is among the largest kn…
Measuring Stellar Atmospheric Parameters with ARES+MOOG
Sergio G. Sousa, Daniel T. Andreasen
The technical aspects in the use of an Equivalent Width (EW) method are described for the derivation of spectroscopic stellar parameters with ARES+MOOG. While the science descripti…
The MUSE Hubble Ultra Deep Field Survey X. Ly Equivalent Widths at
Takuya Hashimoto, Thibault Garel, Bruno Guiderdoni +17
We present rest-frame Ly equivalent widths (EW) of 417 Ly emitters (LAEs) detected with Multi Unit Spectroscopic Explorer (MUSE) on the Very Large Telescope (VLT) at $2.9 < z…
Noise Sources in Photometry and Radial Velocities
M. Oshagh
The quest for Earth-like, extrasolar planets (exoplanets), especially those located inside the habitable zone of their host stars, requires techniques sensitive enough to detect th…
Theory of Stellar Oscillations
Margarida S. Cunha
In recent years, astronomers have witnessed major progresses in the field of stellar physics. This was made possible thanks to the combination of a solid theoretical understanding…
Characterization of Exoplanet-Host Stars
Vardan Adibekyan, Sérgio G. Sousa, Nuno C. Santos
Precise and, if possible, accurate characterization of exoplanets cannot be dissociated from the characterization of their host stars. In this chapter we discuss different methods…
280 one-opposition near-Earth asteroids recovered by the EURONEAR with the Isaac Newton Telescope
O. Vaduvescu, L. Hudin, T. Mocnik +80
One-opposition near-Earth asteroids (NEAs) are growing in number, and they must be recovered to prevent loss and mismatch risk, and to improve their orbits, as they are likely to b…
Constraining planet structure and composition from stellar chemistry: trends in different stellar populations
N. C. Santos, V. Adibekyan, C. Dorn +8
The chemical composition of stars that have orbiting planets provides important clues about the frequency, architecture, and composition of exoplanet systems. We explore the possib…