Results 81 to 90 of about 434 (137)
Effect of Magnetic Field on the Accretion Phase of Population III Star Formation
The Astrophysical JournalWe examine the impact of the magnetic field on Population III star formation by varying its strength. We perform simulations with magnetic field strengths ranging from 10 ^−20 G to 10 ^−4 G, in addition to a model without a magnetic field.
Masahiro N. Machida +2 more
doaj +1 more source
The Astronomical JournalProtostellar outflows and jets are almost ubiquitous characteristics during the mass accretion phase and encode the history of stellar accretion, complex organic molecule (COM) formation, and planet formation.
Somnath Dutta +24 more
doaj +1 more source
Identification of solid N2O in interstellar ices using open JWST data
Astronomy & AstrophysicsContext. Only six molecules containing an N-O bond are detected in the gaseous phase of the interstellar medium. One of them is nitrous oxide (N2O), which was unsuccessfully searched for in solid form since the launch of the Infrared Space Observatory ...
Karteyeva V. +4 more
doaj +1 more source
CORINOS. II. JWST-MIRI Detection of Warm Molecular Gas from an Embedded, Disk-bearing Protostar
The Astrophysical JournalWe present James Webb Space Telescope (JWST) Mid-InfraRed Instrument (MIRI) observations of warm CO and H _2 O gas in emission toward the low-mass protostar IRAS 15398-3359, observed as part of the CORINOS program.
Colette Salyk +10 more
doaj +1 more source
An Embedded Disk (eDisk) in the IceAge: Investigating the Jet and Outflow from Ced 110 IRS4
The Astronomical JournalWe present a comprehensive study of the large-scale structure, jet and outflow morphology, and kinematics of the Class 0/I protostellar binary Ced 110 IRS4, using JWST NIRCam (F150W and F410M) and MIRI MRS observations from the JWST ERC program IceAge ...
Mayank Narang +6 more
doaj +1 more source
JOYS: Unlocking accretion-rate diagnostics for high-mass protostars using JWST/MIRI HI lines
Astronomy & AstrophysicsContext. While many aspects of high-mass star formation have been investigated, the accretion onto the central protostars is one of the most fundamental but less explored physical properties.
Reyes-Reyes S. D. +16 more
doaj +1 more source
First Detection of Circular Polarization in Radio Continuum Toward a Massive Protostar
The Astrophysical Journal LettersPolarization measurements provide strong constraints on magnetic fields in star-forming systems. While magnetic field estimates of a few kG have been obtained near the surfaces of low-mass protostars, there are no analogous measurements in the immediate ...
A. G. Cheriyan +6 more
doaj +1 more source
Identification of Hot Gas around Low-mass Protostars
The Astrophysical JournalThe low carbon content of Earth and primitive meteorites compared to the Sun and interstellar grains suggests that carbon-rich grains were destroyed in the inner few astronomical units of the young solar system.
Merel L. R. van ’t Hoff +5 more
doaj +1 more source
ALMASOP: Inner-envelope Structures of Protostars Driving Nascent Jets
The Astrophysical JournalProtostellar jets provide valuable insight into the evolutionary stage and formation history of star-forming cores in their earliest phases. We investigated the inner envelope structures of three extremely young protostars, selected for having the ...
Somnath Dutta +17 more
doaj +1 more source