Results 81 to 90 of about 13,657 (239)
The importance of episodic accretion for low-mass star formation
, 2011 A star acquires much of its mass by accreting material from a disc. Accretion is probably not continuous but episodic. We have developed a method to include the effects of episodic accretion in simulations of star formation. Episodic accretion results in
André +26 more
core +1 more source
Supersonic Gas Streams Enhance the Formation of Massive Black Holes in the Early Universe [PDF]
, 2017 The origin of super-massive black holes in the early universe remains poorly understood.Gravitational collapse of a massive primordial gas cloud is a promising initial process,but theoretical studies have difficulty growing the black hole fast enough.We ...
Hirano, Shingo +3 more
core +2 more sources
EVOLUTION OF MASS OUTFLOW IN PROTOSTARS [PDF]
The Astrophysical Journal, 2016 ABSTRACT We have surveyed 84 Class 0, Class I, and flat-spectrum protostars in mid-infrared [Si ii], [Fe ii], and [S i] line emission, and 11 of these in far-infrared [O i] emission. We use the results to derive their mass outflow rates, .
Dan M. Watson +11 more
openaire +2 more sources
The Astrophysical Journal, 2023 There is growing evidence that high-mass star formation and hub-filament systems (HFS) are intricately linked. The gas kinematics along the filaments and the forming high-mass star(s) in the central hub are in excellent agreement with the new generation ...
Dongting Yang +30 more
doaj +1 more source
Precessing Jet and Large Dust Grains in the V380 Ori NE Star-forming Region [PDF]
, 2017 The V380 Ori NE bipolar outflow was imaged in the SiO and CO J = 1 - 0 lines, and dense cores in L1641 were observed in the 2.0-0.89 mm continuum. The highly collimated SiO jet shows point-symmetric oscillation patterns in both position and velocity ...
Cho, Jungyeon +12 more
core +2 more sources
M17 MIR: A Massive Star Is Forming via Episodic Mass Accretion
The Astrophysical Journal LettersWe analyzed the Atacama Large Millimeter/submillimeter Array (ALMA) band 6 data for the outbursting massive protostar M17 MIR. The ALMA CO J = 2–1 data reveal a collimated and bipolar north–south outflow from M17 MIR.
Wei Zhou +4 more
doaj +1 more source
Protostellar Jets Enclosed by Low-velocity Outflows
, 2014 A protostellar jet and outflow are calculated for \sim 270 yr following the protostar formation using a three dimensional magnetohydrodynamics simulation, in which both the protostar and its parent cloud are spatially resolved. A high-velocity (\sim100km/
Machida, Masahiro N.
core +1 more source
The Astrophysical JournalWe have observed the low-mass molecular cloud core G204.4-11.3A2-NE (G204NE) in the direction of Orion B giant molecular cloud with the Atacama Large Millimeter/submillimeter Array in Band 6.
Hsuan-I (Ethan) Chou +2 more
doaj +1 more source
The Astrophysical Journal, 2023 We have observed the low-mass protostellar source IRAS 15398−3359 at a resolution of 0.″2–0.″3, as part of the Atacama Large Millimeter/Submillimeter Array Large Program FAUST, to examine the presence of a hot corino in the vicinity of the protostar.
Yuki Okoda +18 more
doaj +1 more source
Protostellar Feedback Halts the Growth of the First Stars in the Universe
, 2011 The first stars fundamentally transformed the early universe by emitting the first light and by producing the first heavy elements. These effects were predetermined by the mass distribution of the first stars, which is thought to have been fixed by a ...
Hosokawa, Takashi +3 more
core +1 more source