News and Updates

Release of NIRPS pipeline reduced spectra

Published: 21 May 2025

This is the collection of reduced spectra from the high-resolution near-infrared spectrograph NIRPS (Near Infra-Red Planet Searcher) in operation at the ESO La Silla 3.6m telescope.


First Data Release of the PHANGS–MUSE Nebular Catalogue

Published: 14 May 2025

The first release of the PHANGS–MUSE Nebular Catalogue (PI: Schinnerer) is now available from the ESO Science Archive Facility. This release is based on integral-field spectroscopic observations obtained with the MUSE instrument at the VLT, primarily under the PHANGS–MUSE Large Programme, and supplemented by data from additional ESO programmes (see PHANGS-MUSE release description).


Second Data Release of ePESSTO+, the advanced Public ESO Spectroscopic Survey of Transient Objects

Published: 15 Apr 2025

The ePESSTO+ collection (PI: Inserra, ESO program IDs 1103.D-0328 and 106.216C, instruments EFOSC and SOFI) gathers a detailed spectroscopic follow up of supernovae at the extremes of the known population, e.g. the most luminous, the faintest, the fast declining, etc.


New data from the Kilo-Degree Survey: KiDS Data Release 5

Published: 18 Mar 2025

KiDS (10.18727/archive/37) is an ESO Public Survey carried out with the VLT Survey Telescope and OmegaCAM camera, that has imaged 1347 square degrees in four filters (u, g, r, i). Single epoch observations are provided in u,g,r. Multi-epoch imaging is provided in the i-band, with the two observations, denoted i1 and i2, typically separated by several years. KiDS was designed as a weak lensing tomography survey, with a core science driver to map and constrain the properties of the evolving large-scale matter distribution in the Universe. The median r-band 5σ limiting magnitude is 24.8 with median seeing 0.7”. Additional science cases are manifold, ranging from galaxy evolution to Milky Way structure, and from the detection of white dwarfs to high-redshift quasars.


Release of VST-OMEGACAM imaging products from the collaboration with INAF

Published: 17 Mar 2025

The VLT Survey Telescope (VST) at Paranal is now owned and managed by INAF which processes the data and releases them via the ESO Archive. The imaging data included in this DR1 are obtained using the wide-field camera OmegaCAM in the filters: u, g, r, i, z, H_α. They span a wide range of celestial objects, from distant galaxy clusters to nearby galaxies and star clusters and have been taken as part of the following observing projects:


Third data release from ESSENCE project

Published: 07 Feb 2025

This third data release (DR3) contains all VLT/FORS1 spectra taken over the period 2002-2006 for the ESSENCE project. It contains and expands on the previous data release (DR2, from 2014), which contained 54 spectra of 50 individual objects. The present release contains 184 spectra of 168 individual objects, of which 79 high-redshift Type Ia supernovae that were the main target of this project.


First release of spectra from the ENTROPY project - young planets observed with UVES

Published: 08 Jan 2025

The ExoplaNeT accRetion mOnitoring sPectroscopic surveY (ENTROPY) aims at investigating into the until now poorly understood process of accretion among planetary mass companions. The detection of emission lines from accreting gas giants facilitates detailed investigations into this process.


Release of the VIRAC version2 Catalogues from the VVV and VVVX Surveys

Published: 20 Dec 2024

We are thrilled to announce the public release of the VVV Infrared Astrometric Catalogues (VIRAC) Version 2. The catalogues are based on data from the VISTA Variables in the Via Lactea (VVV) Survey and its extension, VVVX, and offer unprecedented precision in astrometric and depth.


First data release from the Large Programme X-Shooting ULLYSES (XShootU)

Published: 25 Oct 2024

The X-Shooting ULLYSES project (collection name: XShootU, ESO observing programme ID: 106.211Z) aims to provide near-UV to near-IR spectra for the massive stars targeted by the HST Director’s Discretionary programme ULLYSES. This first public data release (DR1) contains UVB and VIS X-Shooter spectra (wavelength coverage of 300-1020 nm) of 232 massive stars in the Large and Small Magellanic Clouds (LMC, SMC). All stars were observed in STARE Mode, using 0.8” and 0.7” slits for the UVB and VIS, respectively, resulting in a resolving power of ~6700 in the UVB and ~11400 in the VIS. The observations were spread on 102 different nights from October 2020 to Juli 2021 and include 129 LMC and 113 SMC stars. Both individual and co-added spectra are included in the release. Generally, individual exposures (INDIV1D) are available as ancillary files, and co-added spectra with UVB and VIS merged (COADD1D) as the main science spectra, except for some of the binaries, for which only the individual exposures are provided.


New data release from the APEX 'Core And Filament Formation and Evolution In Natal Environments' (CAFFEINE) project

Published: 15 Jul 2024

This collection contains imaging data products for the observing programme CAFFEINE whose data were acquired with the ArTéMiS camera at the APEX telescope from 2018 to 2022. The 48 imaged fields cover a total area of more than ~ 2.5 deg2, focused on the dense (AV > 10) parts of molecular clouds within about 3 kpc from the Sun. The released products include, per each field the 350 μm and 450 μm intensity maps with resolutions of 8” and 10” (half-power beam width), their related weight maps and multi-resolution H2 column density maps. These datasets have been carefully calibrated and combined with Herschel/SPIRE data to recover large-scale emission that cannot be detected from the ground with ArTéMiS. The column density maps have been derived by including additional Herschel data at 160 μm and 250 μm and have a resolution ranging from ~8” in their denser inner parts (AV > 40) to 18.2” in the lower-density outer parts (AV < 40). For more details, refer to the accompanying release documentation or the publication by Mattern et al. (2024, A&A, preprint: 2024arXiv240515713M).


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