Search Publications
Painting a portrait of the Galactic disc with its stellar clusters
Castro-Ginard, A.; Jordi, C.; Casamiquela, L. +10 more
Context. The large astrometric and photometric survey performed by the Gaia mission allows for a panoptic view of the Galactic disc and its stellar cluster population. Hundreds of stellar clusters were only discovered after the latest Gaia data release (DR2) and have yet to be characterised.
Aims: Here we make use of the deep and homogeneous …
The third realization of the International Celestial Reference Frame by very long baseline interferometry
Charlot, P.; Lambert, S.; Bourda, G. +17 more
A new realization of the International Celestial Reference Frame (ICRF) is presented based on the work achieved by a working group of the International Astronomical Union (IAU) mandated for this purpose. This new realization follows the initial realization of the ICRF completed in 1997 and its successor, ICRF2, adopted as a replacement in 2009. Th…
The XMM-Newton serendipitous survey. IX. The fourth XMM-Newton serendipitous source catalogue
Motch, C.; Page, M. J.; Ballet, J. +28 more
Context. Sky surveys produce enormous quantities of data on extensive regions of the sky. The easiest way to access this information is through catalogues of standardised data products. XMM-Newton has been surveying the sky in the X-ray, ultra-violet, and optical bands for 20 years.
Aims: The XMM-Newton Survey Science Centre has been producin…
Clusters and mirages: cataloguing stellar aggregates in the Milky Way
Anders, F.; Cantat-Gaudin, T.
Context. Many of the open clusters listed in modern catalogues were initially reported by visual astronomers as apparent overdensities of bright stars. As observational techniques and analysis methods continue to improve, some of them have been shown to be chance alignments of stars and not true clusters. Recent publications making use of Gaia DR2…
Planck 2018 results. XII. Galactic astrophysics using polarized dust emission
Kim, J.; Miville-Deschênes, M. -A.; Boulanger, F. +160 more
Observations of the submillimetre emission from Galactic dust, in both total intensity I and polarization, have received tremendous interest thanks to the Planck full-sky maps. In this paper we make use of such full-sky maps of dust polarized emission produced from the third public release of Planck data. As the basis for expanding on astrophysica…
Planetary nebulae seen with TESS: Discovery of new binary central star candidates from Cycle 1
Lillo-Box, J.; Jones, D.; Miranda, L. F. +2 more
Context. It has become clear in recent years that binarity plays a crucial role in many aspects of planetary nebulae (PNe), particularly with regard to the striking morphologies they exhibit. To date, there are nearly 60 known binary central stars of PNe (bCSPNe). However, both theory and observation indicate that this figure represents only the t…
A compendium of distances to molecular clouds in the Star Formation Handbook
Alves, João; Speagle, Joshua S.; Zucker, Catherine +4 more
Accurate distances to local molecular clouds are critical for understanding the star and planet formation process, yet distance measurements are often obtained inhomogeneously on a cloud-by-cloud basis. We have recently developed a method that combines stellar photometric data with Gaia DR2 parallax measurements in a Bayesian framework to infer th…
Hunting for open clusters in Gaia DR2: 582 new open clusters in the Galactic disc
Castro-Ginard, A.; Jordi, C.; Luri, X. +8 more
Context. Open clusters are key targets for studies of Galaxy structure and evolution, and stellar physics. Since the Gaia data release 2 (DR2), the discovery of undetected clusters has shown that previous surveys were incomplete.
Aims: Our aim is to exploit the Big Data capabilities of machine learning to detect new open clusters in Gaia DR2,…
Dust masses of young disks: constraining the initial solid reservoir for planet formation
Manara, Carlo F.; van Dishoeck, Ewine F.; Rosotti, Giovanni P. +7 more
Context. Recent years have seen building evidence that planet formation starts early, in the first ~0.5 Myr. Studying the dust masses available in young disks enables us to understand the origin of planetary systems given that mature disks are lacking the solid material necessary to reproduce the observed exoplanetary systems, especially the massi…
From the bulge to the outer disc: StarHorse stellar parameters, distances, and extinctions for stars in APOGEE DR16 and other spectroscopic surveys
Schultheis, M.; Minniti, D.; Bizyaev, D. +27 more
We combine high-resolution spectroscopic data from APOGEE-2 survey Data Release 16 (DR16) with broad-band photometric data from several sources as well as parallaxes from Gaia Data Release 2 (DR2). Using the Bayesian isochrone-fitting code StarHorse, we derived the distances, extinctions, and astrophysical parameters for around 388 815 APOGEE star…