Search Publications
A 3D view of the Taurus star-forming region by Gaia and Herschel. Multiple populations related to the filamentary molecular cloud
Franciosini, E.; Randich, S.; Sicilia-Aguilar, A. +2 more
Context. Taurus represents an ideal region to study the three-dimensional distribution of the young stellar population and relate it to the associated molecular cloud.
Aims: The second Gaia data release (DR2) enables us to investigate the Taurus complex in three dimensions, starting from a previously defined robust membership. The molecular c…
The XMM-Newton serendipitous survey. X. The second source catalogue from overlapping XMM-Newton observations and its long-term variable content
Motch, C.; Page, M. J.; Ballet, J. +12 more
Context. The XMM-Newton Survey Science Centre Consortium (SSC) develops software in close collaboration with the Science Operations Centre to perform a pipeline analysis of all XMM-Newton observations. In celebration of the twentieth anniversary of the XMM-Newton launch, the SSC has compiled the fourth generation of serendipitous source catalogues…
A precise architecture characterization of the π Mensae planetary system
Bouchy, F.; Rebolo, R.; Pallé, E. +97 more
Context. The bright star π Men was chosen as the first target for a radial velocity follow-up to test the performance of ESPRESSO, the new high-resolution spectrograph at the European Southern Observatory's Very Large Telescope. The star hosts a multi-planet system (a transiting 4 M⊕ planet at ~0.07 au and a sub-stellar companion on a ~…
MUSE view of Arp220: Kpc-scale multi-phase outflow and evidence for positive feedback
Maiolino, R.; Colina, L.; Perna, M. +9 more
Context. Arp220 is the nearest and prototypical ultra-luminous infrared galaxy; it shows evidence of pc-scale molecular outflows in its nuclear regions and strongly perturbed ionised gas kinematics on kpc scales. It is therefore an ideal system for investigating outflow mechanisms and feedback phenomena in detail.
Aims: We investigate the fee…
Gap, shadows, spirals, and streamers: SPHERE observations of binary-disk interactions in GG Tauri A
Lodato, G.; Pinte, C.; Ménard, F. +31 more
Context. A large portion of stars is found to be part of binary or higher-order multiple systems. The ubiquity of planets found around single stars raises the question of whether and how planets in binary systems form. Protoplanetary disks are the birthplaces of planets, and characterizing them is crucial in order to understand the planet formatio…
The MUSE Hubble Ultra Deep Field Survey. XIV. Evolution of the Lyα emitter fraction from z = 3 to z = 6
Bacon, Roland; Blaizot, Jérémy; Garel, Thibault +19 more
Context. The Lyα emitter (LAE) fraction, XLAE, is a potentially powerful probe of the evolution of the intergalactic neutral hydrogen gas fraction. However, uncertainties in the measurement of XLAE are still under debate.
Aims: Thanks to deep data obtained with the integral field spectrograph Multi Unit Spectroscopic Exp…
The ALPINE-ALMA [CII] survey. Small Lyα-[CII] velocity offsets in main-sequence galaxies at 4.4 < z < 6
Cimatti, A.; Pozzi, F.; Rodighiero, G. +30 more
Context. The Lyman-α line in the ultraviolet (UV) and the [CII] line in the far-infrared (FIR) are widely used tools to identify galaxies in the early Universe and to obtain insights into interstellar medium (ISM) properties in high-redshift galaxies. By combining data obtained with ALMA in band 7 at ∼320 GHz as part of the ALMA Large Program to I…
Exploring open cluster properties with Gaia and LAMOST
Wu, Di; Chen, Li; Zhong, Jing +3 more
Context. In Gaia DR2, an unprecedented high level of precision has been reached at sub-milliarcsecond for astrometry and millimagnitudes for photometry. Using cluster members identified with the astrometry and photometry in Gaia DR2, we can obtain a reliable determination of cluster properties. However, because of the shortcomings of Gaia spectros…
Alone but not lonely: Observational evidence that binary interaction is always required to form hot subdwarf stars
Pelisoli, Ingrid; Baran, Andrzej S.; Schaffenroth, Veronika +2 more
Context. Hot subdwarfs are core-helium burning stars that show lower masses and higher temperatures than canonical horizontal branch stars. They are believed to be formed when a red giant suffers an extreme mass-loss episode. Binary interaction is suggested to be the main formation channel, but the high fraction of apparently single hot subdwarfs …
Mass constraints for 15 protoplanetary discs from HD 1-0
Fedele, D.; Miotello, A.; van Dishoeck, E. F. +6 more
Context. Hydrogen deuteride (HD) rotational line emission can provide reliable protoplanetary disc gas mass measurements, but this molecule is difficult to observe and detections have been limited to three T Tauri discs. No new data have been available since the Herschel Space Observatory mission ended in 2013.
Aims: We set out to obtain new …