Results 91 to 100 of about 3,519 (205)

Infall and outflow within 400 AU from a high-mass protostar

open access: yes, 2011
Observational signatures of infalling envelopes and outflowing material in early stages of protostellar evolution and at small radii from the protostar are essential to progress in the understanding of the mass-accretion process in star formation.
L. Moscadelli, A. Sanna, C. Goddi
core   +1 more source

LZ-STAR Survey: Low-metallicity Star Formation Survey of Sh2-284. I. Ordered Massive Star Formation in the Outer Galaxy

open access: yesThe Astrophysical Journal
Star formation is a fundamental, yet poorly understood, process of the Universe. It is important to study how star formation occurs in different galactic environments.
Yu Cheng   +7 more
doaj   +1 more source

Evidence for a bloated massive protostar in IRAS 20126+4104

open access: yesAstronomy & Astrophysics
Context. Variability is a well-known phenomenon in low-mass young stellar objects, but in recent years the monitoring of methanol masers and IR continuum emission has permitted the detection of both burst-like episodes and periodic variations in high ...
Cesaroni R.
doaj   +1 more source

Early Planet Formation in Embedded Disks (eDisk). XVII. A Compact but Structured Keplerian Disk and Large-scale Streamers Revealed in the Class I Protostellar System IRAS 04169+2702

open access: yesThe Astrophysical Journal
We present high-resolution (∼0 $\mathop{.}\limits^{^{\prime\prime} }$ 05; 8 au) dust continuum and molecular line observations toward the Class I protostellar system IRAS 04169+2702 in the Taurus B213 region, as part of the Atacama Large Millimeter ...
Ilseung Han   +24 more
doaj   +1 more source

Twisted Pseudodisk and Asymmetric Mass Accretion on the Circumstellar Disk

open access: yesThe Astrophysical Journal
We model gas inflow patterns onto circumstellar disks and the evolution of the pseudodisk using three-dimensional resistive MHD simulations. Starting from a prestellar core without turbulence and with a misalignment between the initial magnetic field and
Masahiro N. Machida   +2 more
doaj   +1 more source

Gamma-rays from massive protostars

open access: yes, 2009
Fil: Paredes, Josep Maria. Universidad de Barcelona.
Romero, Gustavo Esteban   +3 more
openaire   +5 more sources

First Detection of Circular Polarization in Radio Continuum Toward a Massive Protostar

open access: yesThe Astrophysical Journal Letters
Polarization 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

CORINOS. III. Outflow Shocked Regions of the Low-mass Protostellar Source IRAS 15398–3359 with JWST and ALMA

open access: yesThe Astrophysical Journal
While molecular outflows have been studied in detail with radio interferometry, observations of the hotter gas in protostellar outflows at a comparable physical scale are often challenging.
Yuki Okoda   +12 more
doaj   +1 more source

CH3OH and Its Deuterated Species in the Disk/Envelope System of the Low-mass Protostellar Source B335

open access: yesThe Astrophysical Journal
Deuterium fractionation in the closest vicinity of a protostar is important in understanding its potential heritage to a planetary system. Here, we have detected the spectral line emission of CH _3 OH and its three deuterated species, CH _2 DOH, CHD _2 ...
Yuki Okoda   +7 more
doaj   +1 more source

Outflows from the youngest stars are mostly molecular. [PDF]

open access: yesNature, 2023
Ray TP   +22 more
europepmc   +1 more source

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