Results 111 to 120 of about 44,022 (216)
Examining Turbulence in Galactic Molecular Clouds. I. A Statistical Analysis of Velocity Structures
The Astrophysical JournalWe present a systematic analysis of the velocity structure functions (VSFs) of 167 molecular clouds with angular sizes greater than ~176 arcmin ^2 in three sectors of the Galactic midplane.
Yuehui Ma +16 more
doaj +1 more source
Extending the Rock Cycle to a Cosmic Scale
GeosciencesThe rock cycle, a cornerstone of geosciences, describes rock formation and transformation on Earth. However, this Earth-centric view overlooks the broader history of rock evolution across the cosmos, with two fundamental limitations: (i) Earth-centric ...
Andrea Vitrano +4 more
doaj +1 more source
Predicting Interstellar Object Chemodynamics with Gaia
The Astronomical JournalThe interstellar object (ISO) population of the Milky Way is a product of its stars. However, what is in fact a complex structure in the solar neighborhood has traditionally in ISO studies been described as smoothly distributed.
Matthew J. Hopkins +2 more
doaj +1 more source
Star formation : Dynamical study of interstellar dust
, 2020 Le milieu interstellaire se compose, en masse, d'environ 1% de poussière. Paradoxalement,malgré sa faible concentration, celle-ci un rôle très important dans la formation stellaire. La dynamique des grains de poussière peut différer de celle du gaz, entrainant des variations locales de concentration.
openaire +1 more source
The Impact of External Gas Accretion on the Distribution of H I Gas in Galaxies
The Astrophysical JournalUsing the data from Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) and H i -MaNGA surveys, we build a sample of 37 gas–star misaligned galaxies with robust H i detections, which are believed to have undergone external gas accretion processes.
Qianhan Zhang +5 more
doaj +1 more source
Dynamical aspects of the interstellar medium
, 2002 Ce travail de thèse met en oeuvre la microphysique très riche du milieu interstellaire dans plusieurs problèmes hydrodynamiques à très haute résolution, tous associés à la formation des étoiles. La première partie du travail concerne le développement d'un modèle numérique monodimensionnel que nous avons appliqué à trois domaines différents.
openaire +1 more source
Revisiting a Chemical Route to the Formation of CN− in the Interstellar Medium
The Astrophysical JournalWe discuss the HCN + H ^− reaction as a path to the formation of CN ^− , the smallest cyanopolyyne anion observed in several interstellar environments.
Pablo del Mazo-Sevillano +5 more
doaj +1 more source
The Dynamical Interstellar Medium: Insights from Numerical Models
, 2000 Numerical models of the dynamical interstellar medium show that interactions between structures such as supernova remnants and superbubbles are more important than the structures themselves in determining the behavior of the ISM. I review the techniques and conclusions of recent global models, focussing on what they tell us about the formation of star ...
openaire +2 more sources
Dynamical simulation of the Interstellar Comet 3I/ATLAS
11 pages, 6 figures, Accepted for publication in The Astrophysical Journal Letters (ApJL)
Ahuja, Goldy, Ganesh, Shashikiran
openaire +2 more sources
Direct Samples of Interstellar and Interplanetary Material with IMAP. [PDF]
Space Sci RevSzalay JR +21 more
europepmc +1 more source