Search Publications
Gaia Data Release 3. Analysis of RVS spectra using the General Stellar Parametriser from spectroscopy
Hatzidimitriou, D.; Schultheis, M.; Marshall, D. J. +77 more
Context. The chemo-physical parametrisation of stellar spectra is essential for understanding the nature and evolution of stars and of Galactic stellar populations. A worldwide observational effort from the ground has provided, in one century, an extremely heterogeneous collection of chemical abundances for about two million stars in total, with f…
Gaia Data Release 3. Astrophysical parameters inference system (Apsis). I. Methods and content overview
Hatzidimitriou, D.; Bouret, J. -C.; Marshall, D. J. +86 more
Gaia Data Release 3 contains a wealth of new data products for the community. Astrophysical parameters are a major component of this release, and were produced by the Astrophysical parameters inference system (Apsis) within the Gaia Data Processing and Analysis Consortium (DPAC). The aim of this paper is to describe the overall content of the astr…
Gaia Data Release 3. Analysis of the Gaia BP/RP spectra using the General Stellar Parameterizer from Photometry
Hatzidimitriou, D.; Marshall, D. J.; Recio-Blanco, A. +80 more
Context. The astrophysical characterisation of sources is among the major new data products in the third Gaia Data Release (DR3). In particular, there are stellar parameters for 471 million sources estimated from low-resolution BP/RP spectra.
Aims: We present the General Stellar Parameterizer from Photometry (GSP-Phot), which is part of the a…
Gaia Data Release 3. Processing and validation of BP/RP low-resolution spectral data
Gilmore, G.; Harrison, D. L.; Bailer-Jones, C. A. L. +51 more
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 Data Release 3 and astrophysical parameters and Solar System object reflectance spectra in Gaia DR3.
Aims: I…
Gaia Data Release 3. Catalogue validation
Jordi, C.; Luri, X.; Anders, F. +40 more
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 improved parameters compared to Gaia DR2 for radial velocities, astrophysical parameters, variability informatio…
Improving the open cluster census. II. An all-sky cluster catalogue with Gaia DR3
Reffert, Sabine; Hunt, Emily L.
Context. Data from the Gaia satellite are revolutionising our understanding of the Milky Way. With every new data release, there is a need to update the census of open clusters.
Aims: We aim to conduct a blind, all-sky search for open clusters using 729 million sources from Gaia DR3 down to magnitude G ∼ 20, creating a homogeneous catalogue o…
JADES: Probing interstellar medium conditions at z ∼ 5.5-9.5 with ultra-deep JWST/NIRSpec spectroscopy
Chevallard, Jacopo; Maseda, Michael V.; Parlanti, Eleonora +42 more
We present emission-line ratios from a sample of 27 Lyman-break galaxies from z ∼ 5.5 − 9.5 with −17.0 < M1500 < −20.4, measured from ultra-deep JWST/NIRSpec multi-object spectroscopy from the JWST Advanced Deep Extragalactic Survey (JADES). We used a combination of 28 h deep PRISM/CLEAR and 7 h deep G395M/F290LP observations to m…
Gaia Data Release 3. Apsis. II. Stellar parameters
Hatzidimitriou, D.; Bouret, J. -C.; Marshall, D. J. +78 more
Context. The third Gaia data release (Gaia DR3) contains, beyond the astrometry and photometry, dispersed light for hundreds of millions of sources from the Gaia prism spectra (BP and RP) and the spectrograph (RVS). This data release opens a new window on the chemo-dynamical properties of stars in our Galaxy, essential knowledge for understanding …
COSMOS2020: The galaxy stellar mass function. The assembly and star formation cessation of galaxies at 0.2< z ≤ 7.5
Sanders, D. B.; Ilbert, O.; Kartaltepe, J. S. +30 more
Context. How galaxies form, assemble, and cease their star formation is a central question within the modern landscape of galaxy evolution studies. These processes are indelibly imprinted on the galaxy stellar mass function (SMF), and its measurement and understanding is key to uncovering a unified theory of galaxy evolution.
Aims: We present…
Gaia Data Release 3. Summary of the variability processing and analysis
Mazeh, T.; Zucker, S.; Szabados, L. +58 more
Context. Gaia has been in operations since 2014, and two full data releases (DR) have been delivered so far: DR1 in 2016 and DR2 in 2018. The third Gaia data release expands from the early data release (EDR3) in 2020, which contained the five-parameter astrometric solution and mean photometry for 1.8 billion sources by providing 34 months of multi…