Search Publications
Deciphering the extreme X-ray variability of the nuclear transient eRASSt J045650.3−203750. A likely repeating partial tidal disruption event
Gromadzki, M.; Liu, Z.; Buchner, J. +17 more
Context. During its all-sky survey, the extended ROentgen Survey with an Imaging Telescope Array (eROSITA) on board the Spectrum-Roentgen-Gamma (SRG) observatory has uncovered a growing number of X-ray transients associated with the nuclei of quiescent galaxies. Benefitting from its large field of view and excellent sensitivity, the eROSITA window…
Gaia DR3 view of dynamical substructure in the stellar halo near the Sun
Ruiz-Lara, Tomás; Helmi, Amina; Matsuno, Tadafumi +4 more
Context. Debris from past merger events is expected and also known, to some extent, to populate the stellar halo near the Sun.
Aims: We aim to identify and characterise such merger debris using Gaia DR3 data supplemented with metallicity and chemical abundance data from LAMOST LRS and APOGEE for halo stars within 2.5 kpc from the Sun.
Me…
An empirical model of the Gaia DR3 selection function
Hogg, David W.; Casey, Andrew R.; Rix, Hans-Walter +12 more
Interpreting and modelling astronomical catalogues requires an understanding of the catalogues' completeness or selection function: what properties determine an object's probability of being including in the catalogue? Here we set out to empirically quantify the completeness of the overall catalogue of Gaia's third data release (DR3). This task is…
Gaia Data Release 3. The first Gaia catalogue of eclipsing-binary candidates
Mazeh, T.; Audard, M.; Rimoldini, L. +11 more
Context. Gaia Data Release 3 (DR3) provides a number of new data products that complement the early DR3 made available two years ago. Among these is the first Gaia catalogue of eclipsing-binary candidates containing 2 184 477 sources with brightnesses from a few magnitudes to 20 mag in the Gaia G-band and covering the full sky.
Aims: We prese…
Gaia Data Release 3. Apsis. III. Non-stellar content and source classification
Hatzidimitriou, D.; Marshall, D. J.; Recio-Blanco, A. +78 more
Context. As part of the third Gaia Data Release, we present the contributions of the non-stellar and classification modules from the eighth coordination unit (CU8) of the Data Processing and Analysis Consortium, which is responsible for the determination of source astrophysical parameters using Gaia data. This is the third in a series of three pap…
Gaia Data Release 3. A golden sample of astrophysical parameters
Prusti, T.; Mazeh, T.; Zucker, S. +446 more
Context.Gaia Data Release 3 (DR3) provides a wealth of new data products for the astronomical community to exploit, including astrophysical parameters for half a billion stars. In this work, we demonstrate the high quality of these data products and illustrate their use in different astrophysical contexts.
Aims: We produce homogeneous samples…
Bubbles and outflows: The novel JWST/NIRSpec view of the z = 1.59 obscured quasar XID2028
Marconi, A.; Capetti, A.; Brusa, M. +20 more
Quasar feedback in the form of powerful outflows is invoked as a key mechanism to quench star formation in galaxies, although direct observational evidence is still scarce and debated. Here we present Early Release Science JWST NIRSpec IFU observations of the z = 1.59 prototypical obscured Active Galactic Nucleus (AGN) XID2028: This target represe…
GA-NIFS: Black hole and host galaxy properties of two z ≃ 6.8 quasars from the NIRSpec IFU
Pérez-González, Pablo G.; Carniani, Stefano; Übler, Hannah +20 more
Aims: Integral field spectroscopy (IFS) with JWST NIRSpec will significantly improve our understanding of the first quasars, by providing spatially resolved, infrared spectroscopic capabilities that cover key rest-frame optical emission lines that have been previously unobservable.
Methods: Here we present our results from the first two …
A catalogue of high-mass X-ray binaries in the Galaxy: from the INTEGRAL to the Gaia era
García, Federico; Chaty, Sylvain; Fortin, Francis +1 more
Context. High-mass X-ray binaries (HMXBs) are a particular class of high-energy sources that require multi-wavelength observational efforts to be properly characterised. New identifications and the refinement of previous measurements are regularly published in the literature by independent teams of researchers and might, when they are collected in…
Gaia Data Release 3. The second Gaia catalogue of long-period variable candidates
Audard, M.; Rimoldini, L.; Holl, B. +9 more
Context. The third Gaia Data Release covers 34 months of data and includes the second Gaia catalogue of long-period variables (LPVs), with G variability amplitudes larger than 0.1 mag (5-95% quantile range).
Aims: The paper describes the production and content of the second Gaia catalogue of LPVs and the methods we used to compute the publish…