Results 11 to 20 of about 478 (147)
A Framework for Modeling Polycyclic Aromatic Hydrocarbon Emission in Galaxy Evolution Simulations
The Astrophysical Journal, 2023 We present a new methodology for simulating mid-infrared emission from polycyclic aromatic hydrocarbons (PAHs) in galaxy evolution simulations. To do this, we combine theoretical models of PAH emission features as they respond to varying interstellar ...
Desika Narayanan +9 more
doaj +1 more source
Latest results on dark matter searches with H.E.S.S [PDF]
EPJ Web of Conferences, 2019 The nature of Dark Matter (DM) is one of the most debated questions of contemporary physics. Ground-based arrays of Cherenkov telescopes such as the High Energy Spectroscopic System (H.E.S.S.) search for DM signatures through the detection of Very-High ...
Rinchiuso Lucia
doaj +1 more source
Public Data Release of the FIRE-2 Cosmological Zoom-in Simulations of Galaxy Formation
The Astrophysical Journal Supplement Series, 2023 We describe a public data release of the FIRE-2 cosmological zoom-in simulations of galaxy formation (available at http://flathub.flatironinstitute.org/fire ) from the Feedback In Realistic Environments (FIRE) project.
Andrew Wetzel +25 more
doaj +1 more source
A Physical Interpretation of Milky Way Galaxy Dynamics from Precision Astrometrics
, 2020 The dynamical and virial mass of the Milky Way galaxy is estimated using latest high precision stellar halo and dwarf galaxy satellite kinematics. The new data suggest the Galaxy is a highly compact, classically thermalized object. Kinematics exhibit significant velocity-spatial substructure, distinctive dynamic partitions, and strong Keplerian ...
openaire +2 more sources
An innovative model of a non-relativist universe [PDF]
E3S Web of Conferences, 2020 The paper investigates a model of the local Universe based on the concepts of nonrelativistic physics. The space-time boundaries of its applicability are estimated.
Baryshnikova Olga +2 more
doaj +1 more source
Monthly Notices of the Royal Astronomical SocietyAbstract We used CO (2-1) and CO (1-0) data cubes to identify molecular clouds and study their kinematics and dynamics in three nearby galaxies and the inner Milky Way. When observed at similar spatial and velocity resolutions, molecular clouds in the same mass range across these galaxies show broadly comparable physical properties ...
J W Zhou, Sami Dib
openaire +2 more sources
Simulating Atomic Dark Matter in Milky Way Analogs
The Astrophysical Journal Letters, 2023 Dark sector theories naturally lead to multicomponent scenarios for dark matter where a subcomponent can dissipate energy through self-interactions, allowing it to efficiently cool inside galaxies.
Sandip Roy +5 more
doaj +1 more source
The Astrophysical Journal, 2023 Metal-poor stars in the Milky Way (MW) halo display large star-to-star dispersion in their r -process abundance relative to lighter elements. This suggests a chemically diverse and unmixed interstellar medium (ISM) in the early universe.
Anne Noer Kolborg +4 more
doaj +1 more source
The Age-dependent Vertical Actions of Young Stars in the Galaxy
The Astrophysical JournalStars in the Galactic disk are born on cold, nearly circular orbits with small vertical excursions. After their birth, their orbits evolve, driven by small- or large-scale perturbations in the Galactic disk’s gravitational potential.
D. N. Garzon +4 more
doaj +1 more source
Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight
Experimental Physiology, EarlyView.Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley +1 more source