C. Jordi
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View article: OCCASO
OCCASO Open
Context. Open clusters provide valuable information on stellar nucleosynthesis and the chemical evolution of the Galactic disk, as their age and distances can be measured more precisely with photometry than in the case of field stars. Aims…
View article: The longevity of the oldest open clusters
The longevity of the oldest open clusters Open
Context. The dynamical evolution of open clusters is driven by stellar evolution, internal dynamics, and external forces, which according to dynamical simulations will lead to their evaporation over a timescale of about 1 Ga. However, abou…
View article: Discovery of a dormant 33 solar-mass black hole in pre-release <i>Gaia</i> astrometry
Discovery of a dormant 33 solar-mass black hole in pre-release <i>Gaia</i> astrometry Open
Context. Gravitational waves from black-hole (BH) merging events have revealed a population of extra-galactic BHs residing in short-period binaries with masses that are higher than expected based on most stellar evolution models – and also…
View article: JASMINE: Near-infrared astrometry and time-series photometry science
JASMINE: Near-infrared astrometry and time-series photometry science Open
The Japan Astrometry Satellite Mission for INfrared Exploration (JASMINE) is a planned M-class science space mission by the Institute of Space and Astronautical Science, the Japan Aerospace Exploration Agency. JASMINE has two main science …
View article: <i>Gaia</i>Focused Product Release: A catalogue of sources around quasars to search for strongly lensed quasars
<i>Gaia</i>Focused Product Release: A catalogue of sources around quasars to search for strongly lensed quasars Open
Context . Strongly lensed quasars are fundamental sources for cosmology. The Gaia space mission covers the entire sky with the unprecedented resolution of 0.18″ in the optical, making it an ideal instrument to search for gravitational lens…
View article: Gaia Focused Product Release: A catalogue of sources around quasars to search for strongly lensed quasars
Gaia Focused Product Release: A catalogue of sources around quasars to search for strongly lensed quasars Open
Context. Strongly lensed quasars are fundamental sources for cosmology. The Gaia space mission covers the entire sky with the unprecedented resolution of $0.18$" in the optical, making it an ideal instrument to search for gravitational len…
View article: Gaia Focused Product Release: Sources from Service Interface Function image analysis -- Half a million new sources in omega Centauri
Gaia Focused Product Release: Sources from Service Interface Function image analysis -- Half a million new sources in omega Centauri Open
Gaia's readout window strategy is challenged by very dense fields in the sky. Therefore, in addition to standard Gaia observations, full Sky Mapper (SM) images were recorded for nine selected regions in the sky. A new software pipeline exp…
View article: Gaia Focused Product Release: Radial velocity time series of long-period variables
Gaia Focused Product Release: Radial velocity time series of long-period variables Open
The third Gaia Data Release (DR3) provided photometric time series of more than 2 million long-period variable (LPV) candidates. Anticipating the publication of full radial-velocity (RV) in DR4, this Focused Product Release (FPR) provides …
View article: <i>Gaia</i> Focused Product Release: Sources from Service Interface Function image analysis
<i>Gaia</i> Focused Product Release: Sources from Service Interface Function image analysis Open
Context. Gaia ’s readout window strategy is challenged by very dense fields in the sky. Therefore, in addition to standard Gaia observations, full Sky Mapper (SM) images were recorded for nine selected regions in the sky. A new software pi…
View article: JASMINE: Near-Infrared Astrometry and Time Series Photometry Science
JASMINE: Near-Infrared Astrometry and Time Series Photometry Science Open
Japan Astrometry Satellite Mission for INfrared Exploration (JASMINE) is a planned M-class science space mission by the Institute of Space and Astronautical Science, the Japan Aerospace Exploration Agency. JASMINE has two main science goal…
View article: A machine-learning-based tool for open cluster membership determination in <i>Gaia</i> DR3
A machine-learning-based tool for open cluster membership determination in <i>Gaia</i> DR3 Open
Context. Membership studies characterising open clusters (OCs) with Gaia data – most of them using Gaia Data Release 2 (DR2) – have so far been limited at the faint end to magnitude G = 18 due to astrometric uncertainties. Aims. Our goal i…
View article: <i>Euclid</i> preparation
<i>Euclid</i> preparation Open
Material outgassing in a vacuum leads to molecular contamination, a well-known problem in spaceflight. Water is the most common contaminant in cryogenic spacecraft, altering numerous properties of optical systems. Too much ice means that E…
View article: Analysing spectral lines in <i>Gaia</i> low-resolution spectra
Analysing spectral lines in <i>Gaia</i> low-resolution spectra Open
Context. With its third data release, European Space Agency’s Gaia mission has published the first set of low-resolution spectra for a large number of celestial objects. However, these spectra differ in their nature from typical spectrosco…
View article: Euclid preparation. XXIX. Water ice in spacecraft part I: The physics of ice formation and contamination
Euclid preparation. XXIX. Water ice in spacecraft part I: The physics of ice formation and contamination Open
Molecular contamination is a well-known problem in space flight. Water is the most common contaminant and alters numerous properties of a cryogenic optical system. Too much ice means that Euclid's calibration requirements and science goals…
View article: Galactic astrometry with Gaia
Galactic astrometry with Gaia Open
Gaia space mission of the European Space Agency was launched at the end of 2013 and will continue operations until 2025. The published data releases revolutionize the view of the Milky Way galaxy and beyond thanks to its unprecedented astr…
View article: Analysing spectral lines in Gaia low-resolution spectra
Analysing spectral lines in Gaia low-resolution spectra Open
With its third data release, European Space Agency's Gaia mission publishes for the first time low resolution spectra for a large number of celestial objects. These spectra however differ in their nature from typical spectroscopic data. Th…
View article: The Gaia-ESO Public Spectroscopic Survey: Motivation, implementation, GIRAFFE data processing, analysis, and final data products
The Gaia-ESO Public Spectroscopic Survey: Motivation, implementation, GIRAFFE data processing, analysis, and final data products Open
The Gaia-ESO Public Spectroscopic Survey is an ambitious project designed to obtain astrophysical parameters and elemental abundances for 100,000 stars, including large representative samples of the stellar populations in the Galaxy, and a…
View article: The <i>Gaia</i>-ESO Public Spectroscopic Survey: Motivation, implementation, GIRAFFE data processing, analysis, and final data products
The <i>Gaia</i>-ESO Public Spectroscopic Survey: Motivation, implementation, GIRAFFE data processing, analysis, and final data products Open
Context. The Gaia-ESO Public Spectroscopic Survey is an ambitious project designed to obtain astrophysical parameters and elemental abundances for 100 000 stars, including large representative samples of the stellar populations in the Gala…
View article: <i>Gaia</i>Data Release 3
<i>Gaia</i>Data Release 3 Open
Context. The Gaia DR3 catalogue contains, for the first time, about 800 000 solutions with either orbital elements or trend parameters for astrometric, spectroscopic, and eclipsing binaries, and combinations of these three. Aims. With this…
View article: <i>Gaia</i>Data Release 3
<i>Gaia</i>Data Release 3 Open
Context. Blue (BP) and Red (RP) Photometer low-resolution spectral data are one of the exciting new products in Gaia Data Release 3 ( Gaia DR3). These data have also been used to derive astrometry and integrated photometry in Gaia Early Da…
View article: <i>Gaia</i>Data Release 3
<i>Gaia</i>Data Release 3 Open
Context.Gaia Data Release 3 (DR3) provides a wealth of new data products for the astronomical community to exploit, including astrophysical parameters for half a billion stars. In this work, we demonstrate the high quality of these data pr…
View article: Absolute dimensions and apsidal motion of the eclipsing binaries V889 Aquilae and V402 Lacertae
Absolute dimensions and apsidal motion of the eclipsing binaries V889 Aquilae and V402 Lacertae Open
Context. Double-lined eclipsing binaries allow the direct determination of masses and radii, which are key for testing stellar models. With the launch of the TESS mission, many well-known eclipsing binaries have been observed at higher pho…
View article: <i>Gaia</i> Data Release 3
<i>Gaia</i> Data Release 3 Open
Context. With the most recent Gaia data release, the number of sources with complete 6D phase space information (position and velocity) has increased to well over 33 million stars, while stellar astrophysical parameters are provided for mo…
View article: <i>Gaia</i>Data Release 3
<i>Gaia</i>Data Release 3 Open
Context. The Gaia mission of the European Space Agency (ESA) has been routinely observing Solar System objects (SSOs) since the beginning of its operations in August 2014. The Gaia data release three (DR3) includes, for the first time, the…
View article: Gaia Data Release 3: Catalogue Validation
Gaia Data Release 3: Catalogue Validation Open
The third gaia data release (DR3) provides a wealth of new data products. The early part of the release, Gaia EDR3, already provided the astrometric and photometric data for nearly two billion sources. The full release now adds improved pa…
View article: <i>Gaia</i>Data Release 3
<i>Gaia</i>Data Release 3 Open
Gaia Data Release 3 provides novel flux-calibrated low-resolution spectrophotometry for ≃220 million sources in the wavelength range 330 nm ≤ λ ≤ 1050 nm (XP spectra). Synthetic photometry directly tied to a flux in physical units can be o…
View article: <i>Gaia</i>Data Release 3
<i>Gaia</i>Data Release 3 Open
Context. The motion of stars has been used to reveal details of the complex history of the Milky Way, in constant interaction with its environment. Nevertheless, to reconstruct the Galactic history puzzle in its entirety, the chemo-physica…
View article: <i>Gaia</i>Data Release 3
<i>Gaia</i>Data Release 3 Open
Context.Gaia Data Release 3 (DR3) contains the first release of magnitudes estimated from the integration of Radial Velocity Spectrometer (RVS) spectra for a sample of about 32.2 million stars brighter than G RVS ∼ 14 mag (or G ∼ 15 mag). …
View article: <i>Gaia</i> Data Release 3
<i>Gaia</i> Data Release 3 Open
Context. Diffuse interstellar bands (DIBs) are common interstellar absorption features in spectroscopic observations but their origins remain unclear. DIBs play an important role in the life cycle of the interstellar medium (ISM) and can a…
View article: <i>Gaia</i>Data Release 3
<i>Gaia</i>Data Release 3 Open
Context. The third Gaia data release (DR3) provides a wealth of new data products. The early part of the release, Gaia EDR3, already provided the astrometric and photometric data for nearly two billion sources. The full release now adds im…