Search Publications
The SRG/eROSITA all-sky survey. First X-ray catalogues and data release of the western Galactic hemisphere
Zhang, X.; Haberl, F.; Burwitz, V. +142 more
The eROSITA telescope array aboard the Spektrum Roentgen Gamma (SRG) satellite began surveying the sky in December 2019, with the aim of producing all-sky X-ray source lists and sky maps of an unprecedented depth. Here we present catalogues of both point-like and extended sources using the data acquired in the first six months of survey operations…
JADES NIRSpec initial data release for the Hubble Ultra Deep Field: Redshifts and line fluxes of distant galaxies from the deepest JWST Cycle 1 NIRSpec multi-object spectroscopy
Chevallard, Jacopo; Maseda, Michael V.; Parlanti, Eleonora +63 more
We describe the NIRSpec component of the JWST Deep Extragalactic Survey (JADES), and provide deep spectroscopy of 253 sources targeted with the NIRSpec micro-shutter assembly in the Hubble Ultra Deep Field and surrounding GOODS-South. The multi-object spectra presented here are the deepest so far obtained with JWST, amounting to up to 28 hours in …
Discovery of a dormant 33 solar-mass black hole in pre-release Gaia astrometry
Valtchanov, I.; Prusti, T.; Mazeh, T. +413 more
Context. Gravitational waves from black-hole (BH) merging events have revealed a population of extra-galactic BHs residing in short-period binaries with masses that are higher than expected based on most stellar evolution models - and also higher than known stellar-origin black holes in our Galaxy. It has been proposed that those high-mass BHs are…
A parsec-scale Galactic 3D dust map out to 1.25 kpc from the Sun
Speagle, Joshua S.; Zucker, Catherine; Finkbeiner, Douglas +4 more
Context. High-resolution 3D maps of interstellar dust are critical for probing the underlying physics shaping the structure of the interstellar medium, and for foreground correction of astrophysical observations affected by dust.
Aims: We aim to construct a new 3D map of the spatial distribution of interstellar dust extinction out to a distan…
Improving the open cluster census. III. Using cluster masses, radii, and dynamics to create a cleaned open cluster catalogue
Reffert, Sabine; Hunt, Emily L.
Context. The census of open clusters has exploded in size thanks to data from the Gaia satellite. However, it is likely that many of these reported clusters are not gravitationally bound, making the open cluster census impractical for many scientific applications.
Aims: We aim to test different physically motivated methods for distinguishing …
The more the merrier: SRG/eROSITA discovers two further galaxies showing X-ray quasi-periodic eruptions
Gromadzki, M.; Salvato, M.; Liu, Z. +20 more
X-ray quasi-periodic eruptions (QPEs) are a novel addition to the group of extragalactic transients. With only a select number of known sources, and many more models published trying to explain them, we are so far limited in our understanding by small number statistics. In this work, we report the discovery of two further galaxies showing QPEs, he…
The Pristine survey: XXIII. Data Release 1 and an all-sky metallicity catalogue based on Gaia DR3 BP/RP spectro-photometry
Fouesneau, Morgan; Sestito, Federico; McConnachie, Alan W. +38 more
We used the spectro-photometric information of ∼219 million stars from Gaia's Data Release 3 (DR3) to calculate synthetic, narrowband, metallicity-sensitive CaHK magnitudes that mimic the observations of the Pristine survey, a survey of photometric metallicities of Milky Way stars that has been mapping more than 6500 deg2 of the norther…
GA-NIFS: The core of an extremely massive protocluster at the epoch of reionisation probed with JWST/NIRSpec
Pérez-González, Pablo G.; Charlot, Stéphane; Chevallard, Jacopo +24 more
Context. The SPT0311-58 system resides in a massive dark-matter halo at z ∼ 6.9. It hosts two dusty galaxies (E and W) with a combined star formation rate (SFR) of ∼3500 M⊙ yr−1, mostly obscured and identified by the rest-frame IR emission. The surrounding field exhibits an overdensity of submillimetre sources, making it a ca…
1100 days in the life of the supernova 2018ibb. The best pair-instability supernova candidate, to date
Filippenko, Alexei V.; Fransson, Claes; Gromadzki, Mariusz +63 more
Stars with zero-age main sequence masses between 140 and 260 M⊙ are thought to explode as pair-instability supernovae (PISNe). During their thermonuclear runaway, PISNe can produce up to several tens of solar masses of radioactive nickel, resulting in luminous transients similar to some superluminous supernovae (SLSNe). Yet, no unambigu…
Beyond Gaia DR3: Tracing the [α/M] - [M/H] bimodality from the inner to the outer Milky Way disc with Gaia-RVS and convolutional neural networks
Guiglion, G.; Fabbro, S.; Valentini, M. +17 more
Context. In June 2022, Gaia DR3 provided the astronomy community with about one million spectra from the Radial Velocity Spectrometer (RVS) covering the CaII triplet region. In the next Gaia data releases, we anticipate the number of RVS spectra to successively increase from several 10 million spectra to eventually more than 200 million spectra. T…