Telluric standard stars added to the Xshooter data collection

The 1D spectra for telluric standard stars are now added to the Xshooter data collection as stand-alone science-grade spectra. These telluric standard stars are measured frequently during most nights in order to provide a representative reference for telluric absorption lines. They thus provide high-signal-to-noise reference spectra for telluric correction, and science-grade spectra of early-type and solar-type stars at different epochs, from the beginning of Xshooter operations in October 2009 until present. About 30000 new 1D spectra have been added to the Xshooter data collection for a list of 1000 target stars; these numbers will be growing as new 1D spectra are added to the Xshooter data collection.

The products consist of extracted, wavelength-calibrated and flux-calibrated 1-dimensional spectra in tabular format following the established standard for ESO science data products. There are normally spectra for all three XSHOOTER arms (UVB, VIS, NIR). They often come as multiple exposures with exposure times optimized “on the fly”. Often some of these exposures are saturated, and they should be carefully checked for quality. When downloaded, each spectrum comes with ancillary information related to quality control and observational circumstances, and with a preview plot. Data have been pipeline-processed with the best available calibration data. For more details please refer to the associated release description.

Telluric standard star spectra can be downloaded as spectra products from the Xshooter collection by querying using an object list, for example by using the Hipparcos catalogue, or queried here:

Second band merged catalogue release from the VPHAS+ Public Survey.

HK band spectroscopy of 25 high-redshift galaxies obtained from the SINFONI/AMAZE Large Programme migrated to Phase 3

Some artefacts have been reported in the initial part of some of the RED spectra of the UVES Echelle pipeline-processed data.

The XSHOOTER flux calibration issue that affected the reduced spectra of the UVB arm, reported in a previous archive news, has been solved. All Phase 3 XSHOOTER ESO-certified pipieline-processed UVB spectra have been reprocessed with the nightly response curve.

New reduced data products resulting from the Gaia-ESO Public Spectroscopic Survey (GES) are now available via the dedicated Phase 3 query interface at the ESO Science Archive Facility. The data release DR3 provides wavelength calibrated 1-dimensional spectra of point-like sources obtained with FLAMES from 31.12.2011 to 19.07.2014 under ESO program ID 188.B-3002, as well as a catalogue containing photometry and derived quantities (e.g. radial velocities, astrophysical parameters, lithium line strength, Halpha emission, abundances) for a fraction of the stars for which spectra are delivered. The total number of submitted data files is 44210, comprising spectra of 25533 unique targets. Included in this sample are 2342 ESO archive spectra, reduced and analysed within GES by the GES pipelines. The DR3 data products correspond to the Gaia ESO internal iDR4 release.

This data release provides deep 3D data cubes obtained with the Multi-Unit Spectroscopic Explorer (MUSE) integral field unit, in the wide field mode, from data acquired starting from June - August 2014, plus the initial two periods of MUSE operations, P94 and P95 (September 2014 until September 2015). These deep cubes are now published via the ESO Science Archive as reduced data.

As part of the agreement between ESO and IPAG (Institut de Planétologie et d'Astrophysique de Grenoble) to offer the PIONIER interferometric instrument attached to the VLTI in service and visitor mode for periods 96 to 99, IPAG has committed to process the raw data and deliver calibrated visibility data (squared visibility amplitudes and closure phases) to the ESO archive.

The VISTA Magellanic Survey (VMC) led by principal investigator M.-R. Cioni aims at the determination of the spatially resolved star formation history and the three-dimensional geometry of the Magellanic system. VMC has been designed to reach sources below the oldest main-sequence turn off point of the stellar population with multi-epoch coverage to measure accurate Ks mean magnitudes for pulsating variable stars, e.g. RR Lyrae stars and Cepheids.