Explanipedia

3D extinction maps of the Milky Way disc from Gaia GSP-Spec parameters Open

M. Barbillon, A. Recio-Blanco, P. de Laverny, P. A. Palicio · 2025

3D maps of interstellar dust are crucial for understanding the structure of the Milky Way interstellar medium to apply correction to astrophysical observations affected by dust. We aim at providing new extinction estimates in the Gaia BP/R…

The AMBRE Project: Line-broadening and stellar rotation of ESO/FEROS archived spectra Open

Fabrice Bado, P. de Laverny, Sié Kam, A. Recio–Blanco, P. A. Palicio , et al. · 2025

Context . Stellar rotation is a fundamental parameter in studies of the formation and evolution of stars. However, large homogeneous catalogues of rotational velocities derived from high-resolution stellar spectra are still lacking. Aims .…

Caveats about measuring carbon abundances in stars using the CH band Open

P. Santos-Peral, P. Sánchez–Blázquez, A. Vazdekis, P. A. Palicio, Adam T Knowles , et al. · 2025

Context. Stellar carbon abundances are crucial for tracing the star formation history and predicting the near-infrared emission of galaxies. It is still a complex task to derive accurate carbon abundance estimates for a wide variety of sta…

The Gaia spectroscopic catalogue of exoplanets and host stars Open

P. de Laverny, R. Ligi, A. Crida, A. Recio–Blanco, P. A. Palicio · 2025

Context. Complete, accurate, and precise catalogues of exoplanet host star (EHS) properties are essential to deriving high-quality exoplanet parameters. These datasets can then be used to study individual planets, planet populations, and p…

The great wave Open

E. Poggio, S. Khanna, R. Drimmel, Eleonora Zari, Elena D’Onghia , et al. · 2025

We analysed the three-dimensional structure and kinematics of two samples of young stars in the Galactic disc, containing young giants (~17 000 stars out to heliocentric distances of ~7 kpc) and classical Cepheids (~3400 stars out to helio…

Surface brightness–colour relations of Cepheids calibrated by optical interferometry Open

M. Bailleul, N. Nardetto, V. Hocdé, P. Kervella, W. Gieren , et al. · 2025

Context . Surface brightness–colour relations (SBCRs) are widely used to determine the angular diameters of stars. They are in particular used in the Baade-Wesselink (BW) method of distance determination of Cepheids. However, the impact of…

Constraints on the history of Galactic spiral arms revealed by Gaia GSP-Spec α-elements Open

M. Barbillon, A. Recio–Blanco, E. Poggio, P. A. Palicio, E. Spitoni , et al. · 2024

Context. The distribution of chemical elements in the Galactic disc can reveal fundamental clues on the physical processes that led to the current configuration of our Galaxy. Aims. We aim to map chemical azimuthal variations in the Galact…

Stellar Ages of TESS Stars, Adopting Spectroscopic Data from Gaia GSP-Spec Open

Elizabeth Denis, P. de Laverny, A. Miglio, A. Recio–Blanco, P. A. Palicio , et al. · 2024

The Gaia DR3 GSP-spec/TESS (GST) catalog combines asteroseismic data from NASA’s TESS mission with spectroscopic data from ESA’s Gaia mission, and contains about 116,000 Red Clump and Red Giant Branch stars, surpassing previous datasets in…

Double red giant branch and red clump features of Galactic disc stellar populations with Gaia GSP-Spec Open

A. Recio–Blanco, P. de Laverny, P. A. Palicio, S. Cassisi, A. Pietrinferni , et al. · 2024

Context . The bimodality of the Milky Way disc, in the form of a thick short disc and a thinner more radially extended one, encrypts the complex internal evolution of our Galaxy and its interaction with the environment. Aims . To disentang…

Gaia/GSP-spec spectroscopic properties of γ Doradus pulsators Open

P. de Laverny, A. Recio–Blanco, C. Aerts, P. A. Palicio · 2024

Context. The third Data Release of the ESA Gaia mission has provided a large sample of new gravity-mode pulsators, among which more than 11 600 are γ Dor stars. Aims. The goal of the present work is to present the spectroscopic parameters …

TheGaia-ESO Survey DR5.1 andGaiaDR3 GSP-Spec: a comparative analysis Open

M. Van der Swaelmen, C. Viscasillas Vázquez, L. Magrini, A. Recio-Blanco, P. A. Palicio , et al. · 2024

Context. The third data release of Gaia, has provided stellar parameters, metallicity [M/H], [ α /Fe], individual abundances, broadening parameter from its Radial Velocity Spectrograph (RVS) spectra for about 5.6 million objects thanks to …

Cosmic Type Ia supernova rate and constraints on supernova Ia progenitors Open

P. A. Palicio, F. Matteuccí, M. Della Valle, E. Spitoni · 2024

Context. Type Ia supernovae play a key role in the evolution of galaxies by polluting the interstellar medium with a fraction of iron peak elements larger than that released in the core-collapse supernova events. Their light curve, moreove…

Cosmic Type Ia SN rate and constraints on SN Ia progenitors Open

P. A. Palicio, F. Matteuccí, M. Della Valle, E. Spitoni · 2024

Type Ia supernovae play a key role in the evolution of galaxies by polluting the interstellar medium with a fraction of iron peak elements larger than that released in the core collapse supernova events. Their light-curve, moreover, is wid…

Double Red Giant Branch and Red Clump features of Galactic disc stellar populations with Gaia GSPspec Open

A. Recio–Blanco, P. de Laverny, P. A. Palicio, S. Cassisi, A. Pietrinferni , et al. · 2024

To disentangle the different competing physical processes at play in Galactic evolution, a detailed chrono chemicalkinematical, and dynamical characterisation of the disc bimodality is necessary, including high number statistics. Here we m…

Production of s-process elements in AGB stars as revealed by Gaia GSP-spec abundances Open

G. Contursi, P. de Laverny, A. Recio–Blanco, P. A. Palicio, C. Abia · 2023

The recent parameterisation by the GSP-spec module of Gaia/RVS spectra has produced an homogeneous catalogue of about 174,000 AGB stars. Among the 13 chemical elements presented in this catalogue, the abundance of 2 of them (Ce and Nd) hav…

2D chemical evolution models Open

E. Spitoni, G. Cescutti, A. Recio–Blanco, Ivan Minchev, E. Poggio , et al. · 2023

Context. According to observations and numerical simulations, the Milky Way could exhibit several spiral-arm modes of various pattern speeds, with the slower patterns located at larger galactocentric distances. Aims. Our aim is to quantify…

Production of s-process elements in asymptotic giant branch stars as revealed by Gaia/GSP-Spec abundances Open

G. Contursi, P. de Laverny, A. Recio–Blanco, P. A. Palicio, C. Abia · 2023

Context. The recent parameterisation by the GSP-Spec module of Gaia /Radial Velocity Spectrometer stellar spectra has produced an homogeneous catalogue of about 174 000 asymptotic giant branch (AGB) stars. Among the 13 chemical elements pr…

2D chemical evolution models II. Effects of multiple spiral arm patterns on O, Eu, Fe and Ba abundance gradients Open

E. Spitoni, G. Cescutti, A. Recio–Blanco, Ivan Minchev, E. Poggio , et al. · 2023

According to observations and numerical simulations, the Milky Way could exhibit several spiral arm modes with multiple pattern speeds, wherein the slower patterns are located at larger Galactocentric distances. Our aim is to quantify the …

Analytic solution of chemical evolution models with Type Ia supernovae Open

P. A. Palicio, E. Spitoni, A. Recio-Blanco, F. Matteuccí, S. Peirani , et al. · 2023

Context. In recent years, a significant number of works have been focussed on finding analytic solutions for the chemical enrichment models of galactic systems, including the Milky Way. Some of these solutions, however, are not able to acc…

Analytic solution of Chemical Evolution Models with Type Ia SNe Open

P. A. Palicio, E. Spitoni, A. Recio-Blanco, F. Matteucci, S. Peirani , et al. · 2023

Context: In the last years, a significant number of works have focused on finding analytic solutions for the chemical enrichment models of galactic systems, including the Milky Way. Some of these solutions, however, cannot account for the …

Chemical characterisation of the X-shooter Spectral Library (XSL): [Mg/Fe] and [Ca/Fe] abundances Open

P. Santos-Peral, P. Sánchez–Blázquez, A. Vazdekis, P. A. Palicio · 2023

Context. The X-shooter Spectral Library (XSL) is a large empirical stellar library used as a benchmark for the development of stellar population models. The inclusion of α -element abundances is crucial to disentangling the chemical evolut…

Chemical characterisation of the X-shooter Spectral Library (XSL): [Mg/Fe] and [Ca/Fe] abundances Open

P. Santos-Peral, P. Sánchez–Blázquez, A. Vazdekis, P. A. Palicio · 2023

The X-shooter Spectral Library (XSL) is a large empirical stellar library used as a benchmark for the development of stellar population models. The inclusion of $α$-elements abundances is crucial to disentangling the chemical evolution of …

Spiral-like features in the disc revealed by Gaia DR3 radial actions Open

P. A. Palicio, A. Recio–Blanco, E. Poggio, T. Antoja, P. J. McMillan , et al. · 2023

Context. The so-called action variables are specific functions of the positions and velocities that remain constant along the stellar orbit. The astrometry provided by Gaia Early Data Release 3 (EDR3), combined with the velocities inferred…

Beyond the two-infall model Open

E. Spitoni, A. Recio–Blanco, P. de Laverny, P. A. Palicio, G. Kordopatis , et al. · 2023

Context. The recent Gaia Data Release 3 (DR3) represents an unparalleled revolution in Galactic archaeology, providing numerous radial velocities and chemical abundances for millions of stars as well as all-sky coverage. Aims We present a …

The cerium content of the Milky Way as revealed by Gaia DR3 GSP-Spec abundances Open

G. Contursi, P. de Laverny, A. Recio–Blanco, E. Spitoni, P. A. Palicio , et al. · 2022

Context. The recent Gaia third data release contains a homogeneous analysis of millions of high-quality Radial Velocity Spectrometer (RVS) stellar spectra by the GSP-Spec module. This led to the estimation of millions of individual chemica…

Ultracool dwarfs in Gaia DR3 Open

L. M. Sarro, Á. Berihuete, R. L. Smart, C. Reylé, D. Barrado , et al. · 2022

Context. Previous Gaia data releases offered the opportunity to uncover ultracool dwarfs (UCDs) through astrometric, rather than purely photometric, selection. The most recent, the third data release (DR3), offers in addition the opportuni…

Stellar ages, masses, extinctions, and orbital parameters based on spectroscopic parameters ofGaiaDR3 Open

G. Kordopatis, M. Schultheis, P. J. McMillan, P. A. Palicio, P. de Laverny , et al. · 2022

Context.Gaia ’s third data release provides radial velocities for 33 million stars and spectroscopically derived atmospheric parameters for more than 5 million targets. When combined with the astrometric data, these allow us to derive orbi…

Solid confirmation of the broad DIB around 864.8 nm using stacked Gaia–RVS spectra Open

H. Zhao, M. Schultheis, T. Zwitter, C. A. L. Bailer‐Jones, P. Panuzzo , et al. · 2022

Context. Studies of the correlation between different diffuse interstellar bands (DIBs) are important for exploring their origins. However, the Gaia –RVS spectral window between 846 and 870 nm contains few DIBs, the strong DIB at 862 nm be…

Gaia Data Release 3 Open

A. C. Lanzafame, E. Brugaletta, Y. Frémat, R. Sordo, O. L. Creevey , et al. · 2022

Context. The Gaia Radial Velocity Spectrometer (RVS) provides the unique opportunity of a spectroscopic analysis of millions of stars at medium resolution ( λ /Δ λ ∼ 11 500) in the near-infrared (845−872 nm). This wavelength range includes…

The chemical signature of the Galactic spiral arms revealed by Gaia DR3 Open

E. Poggio, A. Recio–Blanco, P. A. Palicio, P. Re Fiorentin, P. de Laverny , et al. · 2022

Taking advantage of the recent Gaia Data Release 3 (DR3), we mapped chemical inhomogeneities in the Milky Way’s disc out to a distance of ∼4 kpc from the Sun, using different samples of bright giant stars. The samples were selected using e…

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