Results 1 to 10 of about 11,786 (248)

The accretion process on protostars

Frontiers in Astronomy and Space Sciences
The process of mass accretion onto Young Stellar Objects (YSOs) plays a fundamental role in determining the final stellar mass and setting the initial conditions for planet formation.
Eleonora Fiorellino, Eleonora Fiorellino, Alice Somigliana   +2 more
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Detections of Compact Radio Continuum toward Methanol Maser Rings Using the VLA

The Astrophysical Journal
High-mass protostars are deeply embedded in dust inside their natal cores and are not easily detectable. However, maser emission at centimeter wavelengths, owing to its high brightness, enables us to study gas kinematics in protostars’ circumstellar ...
Anna Bartkiewicz, Olga Bayandina, Alberto Sanna, Marian Szymczak, Luca Moscadelli, Agnieszka Kobak, Huib Jan van Langevelde, Ashwin Varma   +7 more
doaj   +1 more source

Outflow interaction in Cep-E

Astronomy & Astrophysics
Context. There is clear observational evidence that the main Class 0/I stages of the star formation process are associated with powerful collimated outflows (jets), which sometimes propagate up to distances as large as 104−5 au in molecular clouds ...
Rodríguez-González A., Rivera-Ortiz P. R., Meliani Z., Alquicira-Peláez E., Durán A., Zapata Luis A.   +5 more
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Tracking Star-forming Cores as Mass Reservoirs in Clustered and Isolated Regions Using Numerical Passive Tracer Particles

The Astrophysical Journal
Understanding the physical properties of star-forming cores as mass reservoirs for protostars and the impact of turbulence is crucial in star formation studies.
Shingo Nozaki, Hajime Fukushima, Kazuki Tokuda, Masahiro N. Machida   +3 more
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Accelerating star formation of dense clumps

Astronomy & Astrophysics
We present a statistical framework that establishes an accelerating star formation scenario for dense clumps using ATLASGAL and ALMAGAL samples. By employing the cumulative distribution function of dust temperature as a monotonic evolutionary indicator ...
Liu Xunchuan
doaj   +1 more source

Disk Wind Feedback from High-mass Protostars. IV. Shock-ionized Jets

The Astrophysical Journal
Massive protostars launch accretion-powered, magnetically collimated outflows, which play crucial roles in the dynamics and diagnostics of the star formation process. Here we calculate the shock heating and resulting free–free radio emission in numerical
Emiko C. Gardiner, Jonathan C. Tan, Jan E. Staff, Jon P. Ramsey, Yichen Zhang, Kei E. I. Tanaka   +5 more
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Tracking Protostellar Variability in Massive Protoclusters with ALMA. I. Insights from QUARKS and MaMMOtH

The Astrophysical Journal
Millimeter/submillimeter variability is often attributed to dynamical disk-mediated accretion, yet detection is limited to low-mass protostars in nearby clouds.
Yuhan Yang, Tie Liu, Sheng-Yuan Liu, Doug Johnstone, Gregory Herczeg, Wenyu Jiao, Yu-Nung Su, Xiaofeng Mai, Fengwei Xu, D. M.-A. Meyer, Siju Zhang, Eduard Vorobyov, Suinan Zhang, Qiuyi Luo, Guido Garay, Xi Chen, Yunfan Jiao, Qilao Gu, Yankun Zhang, Ken’ichi Tatematsu, Kee-Tae Kim, Andrey M. Sobolev, Sergey Parfenov, Dmitry A. Ladeyschikov, Leonardo Bronfman   +24 more
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ngVLA Synthetic Observations of Ionized Gas in Massive Protostars

The Astrophysical Journal
Massive-star formation involves significant ionization in the innermost regions near the central object, such as gravitationally trapped H ii regions, jets, ionized disks, or winds. Resolved observations of the associated continuum and recombination line
Jesús M. Jáquez-Domínguez, Roberto Galván-Madrid, Alfonso Trejo-Cruz, Carlos Carrasco-González, Jacopo Fritz, Susana Lizano, Aina Palau, Andrés F. Izquierdo, Luis F. Rodríguez, Alice Pasetto, Stanley Kurtz, Thomas Peters, Eric F. Jiménez-Andrade, Luis A. Zapata   +13 more
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Editorial: The Role of Magnetic Fields in the Formation of Stars

Frontiers in Astronomy and Space Sciences, 2020
Derek Ward-Thompson, Christopher F. McKee, Ray Furuya, Yusuke Tsukamoto   +3 more
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The Protostars in Orion: Characterizing the Properties of Their Magnetized Envelopes

The Astrophysical Journal
We present a study connecting the physical properties of protostellar envelopes to the morphology of the envelope-scale magnetic field. We used the Atacama Large Millimeter/submillimeter Array (ALMA) polarization observations of 61 young protostars at 0 ...
Bo Huang, Josep M. Girart, Ian W. Stephens, Manuel Fernández López, Philip C. Myers, Qizhou Zhang, John J. Tobin, Paulo Cortes, Nadia M. Murillo, Sarah Sadavoy, Hector G. Arce, John M. Carpenter, Woojin Kwon, Valentin J. M. Le Gouellec, Zhi-Yun Li, Leslie W. Looney, Tom Megeath, Erin G. Cox, Nicole Karnath, Dominique Segura-Cox   +19 more
doaj   +1 more source