Results 91 to 100 of about 4,978 (213)

Evolution of Class 0 protostars; model versus observations

, 2006
The catalogue of class 0 protostars from an earlier paper by Froebrich et al., was used to quantitatively review how well current evolutionary models of protostars match the observational evidence.
Klessen, R.S., Schmeja, S., Smith, Michael D., Froebrich, Dirk   +3 more
core  

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
doaj   +1 more source

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

A radiation driven implosion model for the enhanced luminosity of protostars near HII regions

, 2007
Context.Molecular clouds near $\ion{H}{ii}$ regions tend to harbor more luminous protostars. Aims.We investigate whether a radiation-driven implosion mechanism enhances the luminosity of protostars near regions of high ionizing fluxes.
K. Motoyama, T. Umemoto, H. Shang
core   +1 more source

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
doaj   +1 more source

H_2_O + CH_3_OH maser survey of Orion protostars

, 2015
VizieR online Data Catalogue associated with article published in journal Astronomical Journal (AAS) with title 'Water and methanol maser survey of protostars in the Orion molecular cloud complex.' (bibcode: 2013ApJS..209 ...
Choi, Yunhee, Park, Yong-Sun, Kim, Kee-Tae, Seoul National University, Korea Astronomy and Space Science Institute, University of Victoria, Di Francesco, James, Kyung Hee University, Choi, Minho, Kang, Miju, Lee, Jeong-Eun, Herzberg Institute of Astrophysics, Astronomy, SRON Netherlands Institute for Space Research   +13 more
core   +1 more source

Gaseous Planets, Protostars, and Young Brown Dwarfs: Birth and Fate

, 2007
Physikalisches ...
Alibert, Yann, Chabrier, Gilles, Baraffe, Isabelle, Barman, Travis, Hennebelle, Patrick, Selsis, Franck   +5 more
core  

Protostellar Disk Formation Regimes: Angular Momentum Conservation versus Magnetic Braking

The Astrophysical Journal Letters
Protostellar disks around young protostars exhibit diverse properties, with their radii ranging from less than ten to several hundred astronomical units.
Hsi-Wei Yen, Yueh-Ning Lee
doaj   +1 more source

The Outflow of The Protostar in B335. I.

The Astronomical Journal
Abstract The isolated globule B335 contains a single, low-luminosity Class 0 protostar associated with a bipolar nebula and outflow system seen nearly perpendicular to its axis. We observed the innermost regions of this outflow as part of JWST/NIRCam Guaranteed Time Observations program 1187, primarily intended for wide-field slitless ...
Klaus W. Hodapp, Laurie L. Chu, Thomas Greene, Michael R. Meyer, Doug Johnstone, Marcia J. Rieke, John Stansberry, Martha Boyer, Charles Beichman, Scott Horner, Tom Roellig, George Rieke, Eric T. Young   +12 more
openaire   +3 more sources

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
doaj   +1 more source