Search Publications
The WISSH quasars project. IX. Cold gas content and environment of luminous QSOs at z ∼ 2.4-4.7
Maiolino, R.; Fiore, F.; Marconi, A. +23 more
Context. Sources at the brightest end of the quasi-stellar object (QSO) luminosity function, during the peak epoch in the history of star formation and black hole accretion (z ∼ 2-4, often referred to as "Cosmic noon") are privileged sites to study the cycle of feeding & feedback processes in massive galaxies.
Aims: We aim to perform the …
The SPHERE infrared survey for exoplanets (SHINE). II. Observations, data reduction and analysis, detection performances, and initial results
Rouan, D.; Ménard, F.; Fantinel, D. +118 more
Context. In recent decades, direct imaging has confirmed the existence of substellar companions (exoplanets or brown dwarfs) on wide orbits (>10 au) around their host stars. In striving to understand their formation and evolution mechanisms, in 2015 we initiated the SPHERE infrared survey for exoplanets (SHINE), a systematic direct imaging surv…
The 800 pc long tidal tails of the Hyades star cluster. Possible discovery of candidate epicyclic overdensities from an open star cluster
Boffin, Henri M. J.; Jerabkova, Tereza; Beccari, Giacomo +3 more
The tidal tails of stellar clusters provide an important tool for studying the birth conditions of the clusters and their evolution, coupling, and interaction with the Galactic potential. The Gaia satellite, with its high-quality astrometric data, opened this field of study, allowing us to observe large-scale tidal tails. Theoretical models of tid…
Characterizing and correcting the proper motion bias of the bright Gaia EDR3 sources
Cantat-Gaudin, Tristan; Brandt, Timothy D.
In this paper, we characterize magnitude-dependent systematics in the proper motions of the Gaia EDR3 catalog and provide a prescription for their removal. The reference frame of bright stars (G ≲ 13) in EDR3 is known to rotate with respect to extragalactic objects, but this rotation has proven difficult to characterize and correct. We employ a sa…
Homogeneous study of Herbig Ae/Be stars from spectral energy distributions and Gaia EDR3
Montesinos, B.; Mendigutía, I.; Solano, E. +6 more
Context. Herbig Ae/Be stars (HAeBes) have so far been studied based on relatively small samples that are scattered throughout the sky. Their fundamental stellar and circumstellar parameters and statistical properties were derived with heterogeneous approaches before Gaia.
Aims: Our main goal is to contribute to the study of HAeBes from the la…
The ALPINE-ALMA [C II] survey. Luminosity function of serendipitous [C II] line emitters at z ∼ 5
Hathi, Nimish P.; Koekemoer, Anton M.; Jones, Gareth C. +33 more
We present the first [C II] 158 µm luminosity function (LF) at z ∼ 5 from a sample of serendipitous lines detected in the ALMA Large Program to INvestigate [C II] at Early times (ALPINE). A study of the 118 ALPINE pointings revealed several serendipitous lines. Based on their fidelity, we selected 14 lines for the final catalog. According to…
Multiscale, multiwavelength extraction of sources and filaments using separation of the structural components: getsf
Men'shchikov, A.
High-quality astronomical images delivered by modern ground-based and space observatories demand adequate, reliable software for their analysis and accurate extraction of sources, filaments, and other structures, containing massive amounts of detailed information about the complex physical processes in space. The multiwavelength observations with …
The CALYPSO IRAM-PdBI survey of jets from Class 0 protostars. Exploring whether jets are ubiquitous in young stars
Maret, S.; Podio, L.; Codella, C. +10 more
Aims: As a part of the CALYPSO Large Program, we aim to constrain the properties of protostellar jets and outflows by searching for corresponding emission in a sample of 21 Class 0 protostars covering a broad range of internal luminosities (Lint from 0.035 L⊙ to 47 L⊙).
Methods: We analyzed high angular (…
Flares in open clusters with K2. II. Pleiades, Hyades, Praesepe, Ruprecht 147, and M 67
Kristiansen, Martti H.; Omohundro, Mark; Davenport, James R. A. +3 more
Context. Magnetic fields are a key component in the main sequence evolution of low mass stars. Flares, energetic eruptions on the surfaces of stars, are an unmistakable manifestation of magnetically driven emission. The occurrence rates and energy distributions of flares trace stellar characteristics such as mass and age. However, before flares ca…
Measuring the ratio of the gas and dust emission radii of protoplanetary disks in the Lupus star-forming region
de Gregorio-Monsalvo, I.; Pascucci, I.; Testi, L. +15 more
We performed a comprehensive demographic study of the CO extent relative to dust of the disk population in the Lupus clouds in order to find indications of dust evolution and possible correlations with other disk properties. We increased the number of disks of the region with measured RCO and Rdust from observations with the …