Search Publications
Dancing with the Stars: a Review on Stellar Multiplicity
Merle, Thibault
Stars like company. They are mostly formed in clusters and their lives are often altered by the presence of one or more companions. Interaction processes between components may lead to complex outcomes like Algols, blue stragglers, chemically altered stars, type Ia supernovae, as well as progenitors of gravitational wave sources, to cite a few. Ob…
JWST Ice Band Profiles Reveal Mixed Ice Compositions in the HH 48 NE Disk
McGuire, Brett A.; van Dishoeck, E. F.; Bergner, Jennifer B. +19 more
Planet formation is strongly influenced by the composition and distribution of volatiles within protoplanetary disks. With JWST, it is now possible to obtain direct observational constraints on disk ices, as recently demonstrated by the detection of ice absorption features toward the edge-on HH 48 NE disk as part of the Ice Age Early Release Scien…
ALMA-ALPINE [CII] survey: The sub-kpc morphology of three main sequence galaxy systems at z ∼ 4.5 revealed by ALMA
Pozzi, F.; Béthermin, M.; Giavalisco, M. +25 more
Context. Going from a redshift of 6 down to nearly 4, galaxies grow rapidly from low-mass galaxies towards the more mature types of massive galaxies seen at cosmic noon. Growth via gas accretion and mergers undoubtedly shape this evolution, however, there is considerable uncertainty at present over the contribution of each of these processes to th…
T-ReX: The Tarantula—Revealed by X-Rays
Townsley, Leisa K.; Broos, Patrick S.; Povich, Matthew S.
The Tarantula Nebula (30 Doradus, 30 Dor) is the most important star-forming complex in the Local Group, offering a microscope on starburst astrophysics. At its heart lies the exceptionally rich young stellar cluster R136, containing the most massive stars known. Stellar winds and supernovae have carved 30 Dor into an amazing display of arcs, pill…
High-resolution ALMA observations of compact discs in the wide-binary system Sz 65 and Sz 66
Ricci, L.; Huang, J.; Benisty, M. +11 more
Context. Substructures in disc density are ubiquitous in the bright extended discs that are observed with high resolution. These substructures are intimately linked to the physical mechanisms driving planet formation and disc evolution. Surveys of star-forming regions find that most discs are in fact compact, less luminous, and do not exhibit thes…
Magnetic Field of Molecular Gas Measured with the Velocity Gradient Technique. II. Curved Magnetic Field in kpc-scale Bubble of NGC 628
Li, Dalei; Tang, Xindi; Zhou, Jianjun +9 more
We report the detection of the ordered alignment between the magnetic field and kpc-scale bubbles in the nearby spiral galaxy, NGC 628. Applying the Velocity Gradient Technique on CO spectroscopic data from the ALMA-PHANGS, the magnetic field of NGC 628 is measured at the scale of 191 pc (∼4″). The large-scale magnetic field is oriented parallel t…
Galaxy main sequence and properties of low-mass Lyman-α emitters towards reionisation as viewed by VLT/MUSE and JWST/NIRCam
Laporte, N.; Burgarella, D.; Guo, Y. +11 more
Context. Faint, star-forming galaxies are likely to play a dominant role in cosmic reionisation. Great strides have been made in recent years to characterise these populations at high redshifts (z > 3). Now, for the first time, with JWST photometry beyond 1 µm in the rest frame, we can derive accurate stellar masses and position these gal…
PSR J0210+5845: Ultra-wide binary pulsar with a B6 V main sequence star companion
Casares, J.; Nelemans, G.; Yanes-Rizo, I. V. +5 more
We report on radio timing observations of PSR J0210+5845 that reveal large deviations from typical pulsar spin-down behaviour. We interpret these deviations as being due to the binary motion around the V = 13.5 star 2MASS J02105640+5845176, which is coincident in terms of its celestial position and distance with the pulsar. Archival observations a…
Near Subsonic Solar Wind Outflow from an Active Region
Riley, Pete; Bale, Stuart D.; Sioulas, Nikos +10 more
During Parker Solar Probe (Parker) Encounter 15 (E15), we observe an 18 hr period of near-subsonic (M S ∼ 1) and sub-Alfvénic (SA), M A ⋘ 1, slow-speed solar wind from 22 to 15.6 R ⊙. As the most extreme SA interval measured to date and skirting the solar wind sonic point, it is the deepest Parker has probed into t…
Probing supermassive black hole growth and its dependence on stellar mass and star formation rate in low-redshift galaxies
Georgakakis, A.; Vignali, C.; Paolillo, M. +4 more
We present an improved study of the relation between supermassive black hole growth and their host galaxy properties in the local Universe (z < 0.33). To this end, we build an extensive sample combining spectroscopic measurements of star formation rate (SFR) and stellar mass from Sloan Digital Sky Survey, with specific Black Hole accretion rate…