Search Publications
Molecules with ALMA at Planet-forming Scales (MAPS). I. Program Overview and Highlights
Zhang, Ke; Wilner, David J.; Ménard, François +35 more
Planets form and obtain their compositions in dust- and gas-rich disks around young stars, and the outcome of this process is intimately linked to the disk chemical properties. The distributions of molecules across disks regulate the elemental compositions of planets, including C/N/O/S ratios and metallicity (O/H and C/H), as well as access to wat…
Updated parameters of 1743 open clusters based on Gaia DR2
Moitinho, A.; Paunzen, E.; Carraro, G. +5 more
In this study, we follow up our recent paper (Monteiro et al. 2020) and present a homogeneous sample of fundamental parameters of open clusters in our Galaxy, entirely based on Gaia DR2 data. We used published membership probability of the stars derived from Gaia DR2 data and applied our isochrone fitting code, updated as in Monteiro et al. (2020)…
The SPHERE infrared survey for exoplanets (SHINE). III. The demographics of young giant exoplanets below 300 au with SPHERE
Moutou, C.; Fantinel, D.; Dominik, C. +108 more
The SpHere INfrared Exoplanet (SHINE) project is a 500-star survey performed with SPHERE on the Very Large Telescope for the purpose of directly detecting new substellar companions and understanding their formation and early evolution. Here we present an initial statistical analysis for a subsample of 150 stars spanning spectral types from B to M …
California Legacy Survey. II. Occurrence of Giant Planets beyond the Ice Line
Henry, Gregory W.; Knutson, Heather A.; Kane, Stephen R. +20 more
We used high-precision radial velocity measurements of FGKM stars to determine the occurrence of giant planets as a function of orbital separation spanning 0.03-30 au. Giant planets are more prevalent at orbital distances of 1-10 au compared to orbits interior or exterior of this range. The increase in planet occurrence at ~1 au by a factor of ~4 …
Dark Energy Survey Year 3 Results: Photometric Data Set for Cosmology
Benoit-Lévy, A.; Bechtol, K.; Smith, M. +112 more
We describe the Dark Energy Survey (DES) photometric data set assembled from the first three years of science operations to support DES Year 3 cosmologic analyses, and provide usage notes aimed at the broad astrophysics community. Y3 GOLD improves on previous releases from DES, Y1 GOLD, and Data Release 1 (DES DR1), presenting an expanded and cura…
Exoplanet Statistics and Theoretical Implications
Dong, Subo; Zhu, Wei
In the past few years, significant advances have been made in understanding the distributions of exoplanet populations and the architecture of planetary systems. We review the recent progress of planet statistics, with a focus on the inner ≲1-AU region of planetary systems that has been fairly thoroughly surveyed by the Kepler mission. We also dis…
The Automatic Learning for the Rapid Classification of Events (ALeRCE) Alert Broker
Bauer, F. E.; Moya, A.; Catelan, M. +40 more
We introduce the Automatic Learning for the Rapid Classification of Events (ALeRCE) broker, an astronomical alert broker designed to provide a rapid and self-consistent classification of large etendue telescope alert streams, such as that provided by the Zwicky Transient Facility (ZTF) and, in the future, the Vera C. Rubin Observatory Legacy Surve…
Evidence from APOGEE for the presence of a major building block of the halo buried in the inner Galaxy
Cunha, Katia; Smith, Verne V.; Majewski, Steven R. +13 more
We report evidence from APOGEE for the presence of a new metal-poor stellar structure located within ∼4 kpc of the Galactic Centre. Characterized by a chemical composition resembling those of low-mass satellites of the Milky Way, this new inner Galaxy structure (IGS) seems to be chemically and dynamically detached from more metal-rich populations …
Dark energy survey year 3 results: weak lensing shape catalogue
Bacon, D.; Smith, M.; Davis, T. M. +101 more
We present and characterize the galaxy shape catalogue from the first 3 yr of Dark Energy Survey (DES) observations, over an effective area of 4143 deg2 of the southern sky. We describe our data analysis process and our self-calibrating shear measurement pipeline METACALIBRATION, which builds and improves upon the pipeline used in the D…
Repeating behaviour of FRB 121102: periodicity, waiting times, and energy distribution
Kramer, M.; Seymour, A.; Scholz, P. +7 more
Detections from the repeating fast radio burst FRB 121102 are clustered in time, noticeable even in the earliest repeat bursts. Recently, it was argued that the source activity is periodic, suggesting that the clustering reflected a not-yet-identified periodicity. We performed an extensive multiwavelength campaign with the Effelsberg telescope, th…