Results 71 to 80 of about 3,519 (205)
The Astrophysical Journal Letters, 2023 Outflows and winds launched from young stars play a crucial role in the evolution of protostars and the early stages of planet formation. However, the specific details of the mechanism behind these phenomena, including how they affect the protoplanetary ...
D. Harsono +8 more
doaj +1 more source
Coevolution of phyllosilicate, carbon, sulfide, and apatite in Ryugu's parent body
Meteoritics &Planetary Science, Volume 59, Issue 8, Page 2073-2096, August 2024.Abstract We analyzed an asteroid Ryugu sample returned to Earth by JAXA's Hayabusa2 mission using nanoIR, SEM, and TEM microscopy. We identified multiple distinct carbon reservoirs within the phyllosilicate matrix and demonstrate infrared spectral affinities for some of the carbon to insoluble organic matter (IOM).
Zack Gainsforth +31 more
wiley +1 more source
Limitations of the modified blackbody fit method for determining molecular cloud properties
Astronomische Nachrichten, Volume 345, Issue 4, May 2024.Abstract Achieving a comprehensive understanding of the star and planet formation process is one of the fundamental tasks of astrophysics, requiring detailed knowledge of the physical conditions during the different phases of this process. During the earliest stages, that is, concerning physical processes in molecular clouds and filaments, the column ...
Niko Zielinski, Sebastian Wolf
wiley +1 more source
The Astrophysical JournalWe have observed the late Class I protostellar source Elias 29 at a spatial resolution of 70 au with the Atacama Large Millimeter/submillimeter Array as part of the FAUST Large Program.
Yoko Oya +68 more
doaj +1 more source
Merger Conditions of Population III Protostar Binaries
The Astrophysical Journal, 2023 Massive close binary stars with extremely small separations have been observed, and they are possible progenitors of gravitational-wave sources. The evolution of massive binaries in the protostellar accretion stage is key to understanding their formation
Takanobu Kirihara +3 more
doaj +1 more source
Molecules in Dense Clouds and Protostars [PDF]
Highlights of Astronomy, 1971 AbstractThis paper deals with the interpretation of molecular line emission from class I OH/H2O emission centers associated with compact HII regions and with the OH 18 cm emission from dark clouds in T-Tauri star associations. Observational evidence is presented, that class IOH/H2O emission centers represent a particular stage in the evolution of a ...
openaire +1 more source
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
An Explicit M1 Radiation-hydrodynamics Scheme for 3D Protostellar Evolution
The Astrophysical JournalWe present a radiation-hydrodynamics (RHD) scheme that enables 3D simulations resolving both protostellar interiors and their surrounding accretion flows within a single framework, to clarify how a protostar evolves while interacting with the accretion ...
Kazutaka Kimura +4 more
doaj +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
Dust-seeding Molecules in a Massive Protostar—Detection of TiO in Orion Source I
The Astrophysical Journal LettersWe report the first detection of TiO in star-forming regions based on Atacama Large Millimeter/submillimeter Array observations of Orion Source I, a well-characterized massive protostar.
Ziwei E. Zhang +18 more
doaj +1 more source