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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…
JWST/NIRSpec spectroscopy of z = 7-9 star-forming galaxies with CEERS: new insight into bright Lyα emitters in ionized bubbles
Charlot, Stéphane; Chen, Zuyi; Tang, Mengtao +9 more
We describe new JWST/NIRSpec observations of galaxies at z ≳ 7 taken from the CEERS survey. Previous observations of this area have revealed associations of Lyα emitters at redshifts (z = 7.5, 7.7, and 8.7) where the intergalactic medium (IGM) is thought to be mostly neutral, leading to suggestions that these systems are situated in large ionized …
Identification of carbon dioxide in an exoplanet atmosphere
Henning, Thomas; Fortney, Jonathan J.; Carter, Aarynn L. +129 more
Carbon dioxide (CO2) is a key chemical species that is found in a wide range of planetary atmospheres. In the context of exoplanets, CO2 is an indicator of the metal enrichment (that is, elements heavier than helium, also called `metallicity')1-3, and thus the formation processes of the primary atmospheres of hot g…
The Eighteenth Data Release of the Sloan Digital Sky Surveys: Targeting and First Spectra from SDSS-V
Qiu, Dan; Trump, Jonathan R.; Shen, Yue +152 more
The eighteenth data release (DR18) of the Sloan Digital Sky Survey (SDSS) is the first one for SDSS-V, the fifth generation of the survey. SDSS-V comprises three primary scientific programs or "Mappers": the Milky Way Mapper (MWM), the Black Hole Mapper (BHM), and the Local Volume Mapper. This data release contains extensive targeting information …
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…
Spectroscopic Confirmation of CEERS NIRCam-selected Galaxies at z ≃ 8-10
Papovich, Casey; Cole, Justin W.; Yang, Guang +45 more
We present JWST/NIRSpec prism spectroscopy of seven galaxies selected from Cosmic Evolution Early Release Science (CEERS) survey NIRCam imaging with photometric redshifts z phot > 8. We measure emission line redshifts of z = 7.65 and 8.64 for two galaxies. For two other sources without securely detected emission lines we measure $z={…
JADES Initial Data Release for the Hubble Ultra Deep Field: Revealing the Faint Infrared Sky with Deep JWST NIRCam Imaging
Chevallard, Jacopo; Maseda, Michael V.; Carniani, Stefano +56 more
JWST has revolutionized the field of extragalactic astronomy with its sensitive and high-resolution infrared view of the distant Universe. Adding to the new legacy of JWST observations, we present the first NIRCam imaging data release from the JWST Advanced Deep Extragalactic Survey (JADES), providing nine filters of infrared imaging of ~25 arcmin…