Search Publications
The VLT/NaCo large program to probe the occurrence of exoplanets and brown dwarfs at wide orbits. IV. Gravitational instability rarely forms wide, giant planets
Moutou, C.; Quanz, S. P.; Henning, T. +34 more
Understanding the formation and evolution of giant planets (≥1 MJup) at wide orbital separation (≥5 AU) is one of the goals of direct imaging. Over the past 15 yr, many surveys have placed strong constraints on the occurrence rate of wide-orbit giants, mostly based on non-detections, but very few have tried to make a direct link with pl…
Radial distribution of dust, stars, gas, and star-formation rate in DustPedia face-on galaxies
Bianchi, S.; Fritz, J.; Madden, S. C. +18 more
Aims: The purpose of this work is the characterization of the radial distribution of dust, stars, gas, and star-formation rate (SFR) in a sub-sample of 18 face-on spiral galaxies extracted from the DustPedia sample.
Methods: This study is performed by exploiting the multi-wavelength DustPedia database, from ultraviolet (UV) to sub-millim…
Radial metal abundance profiles in the intra-cluster medium of cool-core galaxy clusters, groups, and ellipticals
Zhang, Y. -Y.; Simionescu, A.; Kaastra, J. S. +10 more
The hot intra-cluster medium (ICM) permeating galaxy clusters and groups is not pristine, as it has been continuously enriched by metals synthesised in Type Ia (SNIa) and core-collapse (SNcc) supernovae since the major epoch of star formation (z ≃ 2-3). The cluster/group enrichment history and mechanisms responsible for releasing and mixing the me…
The MUSE-Wide survey: A first catalogue of 831 emission line galaxies
Bacon, Roland; Brinchmann, Jarle; Weilbacher, Peter M. +11 more
We present a first instalment of the MUSE-Wide survey, covering an area of 22.2 arcmin2 (corresponding to 20% of the final survey) in the CANDELS/Deep area of the Chandra Deep Field South. We use the MUSE integral field spectrograph at the ESO VLT to conduct a full-area spectroscopic mapping at a depth of 1 h exposure time per 1 arcmin<…
Fibers in the NGC 1333 proto-cluster
Alves, J.; Tafalla, M.; Hacar, A.
Are the initial conditions for clustered star formation the same as for non-clustered star formation? To investigate the initial gas properties in young proto-clusters we carried out a comprehensive and high-sensitivity study of the internal structure, density, temperature, and kinematics of the dense gas content of the NGC 1333 region in Perseus,…
Gaia Data Release 1. Catalogue validation
Jordi, C.; Luri, X.; Cantat-Gaudin, T. +42 more
Context. Before the publication of the Gaia Catalogue, the contents of the first data release have undergone multiple dedicated validation tests.
Aims: These tests aim to provide in-depth analysis of the Catalogue content in order to detect anomalies and individual problems in specific objects or in overall statistical properties, and either …
Gaia Data Release 1. Testing parallaxes with local Cepheids and RR Lyrae stars
Prusti, T.; Zucker, S.; Hatzidimitriou, D. +583 more
Context. Parallaxes for 331 classical Cepheids, 31 Type II Cepheids, and 364 RR Lyrae stars in common between Gaia and the HIPPARCOS and Tycho-2 catalogues are published in Gaia Data Release 1 (DR1) as part of the Tycho-Gaia Astrometric Solution (TGAS).
Aims: In order to test these first parallax measurements of the primary standard candles o…
ULX spectra revisited: Accreting, highly magnetized neutron stars as the engines of ultraluminous X-ray sources
Vasilopoulos, Georgios; Bachetti, Matteo; Godet, Olivier +3 more
Aims: In light of recent discoveries of pulsating ultraluminous X-ray sources (ULXs) and recently introduced theoretical schemes that propose neutron stars (NSs) as the central engines of ULXs, we revisit the spectra of eighteen well known ULXs, in search of indications that favour this newly emerging hypothesis.
Methods: We examine the …
Resolving the fragmentation of high line-mass filaments with ALMA: the integral shaped filament in Orion A
Henning, T.; Megeath, S. T.; Beuther, H. +5 more
We study the fragmentation of the nearest high line-mass filament, the integral shaped filament (ISF, line-mass 400 M⊙ pc-1) in the Orion A molecular cloud. We have observed a 1.6 pc long section of the ISF with the Atacama Large Millimetre/submillimeter Array (ALMA) at 3 mm continuum emission, at a resolution of 3″ (1200 AU)…
Testing the universality of the star-formation efficiency in dense molecular gas
Braine, J.; André, Ph.; Könyves, V. +7 more
Context. Recent studies with, for example, Spitzer and Herschel have suggested that star formation in dense molecular gas may be governed by essentially the same "law" in Galactic clouds and external galaxies. This conclusion remains controversial, however, in large part because different tracers have been used to probe the mass of dense molecular…