Results 31 to 40 of about 4,978 (213)

ON THE DISTRIBUTION OF PROTOSTAR MASSES [PDF]

The Astrophysical Journal, 2009
The distribution of protostar masses is studied for core-environment systems whose duration of infall follows a waiting-time distribution. Each core-environment system has a continuous density profile with no barrier to mass flow. The core is an isothermal sphere and the environment is a filament, a layer, or a uniform medium.
openaire   +2 more sources

MASERS AS TRACERS OF ANGULAR MOMENTUM IN MOLECULAR OUTFLOWS

Tecnociencia, 2023
The dissipation of angular momentum of collapsing molecular cores is a key component in the formation of stars. Previous observations have reported that highly collimated protostellar jets can remove angular momentum from low-mass protostars.
Diana V. López, Esteban D. Araya
doaj   +2 more sources

ALMA ACA study of the H$_2$S/OCS ratio in low-mass protostars [PDF]

, 2023
The identification of the main sulfur reservoir on its way from the diffuse interstellar medium to the cold dense star-forming cores and eventually to protostars is a long-standing problem.
Benoît Tabone, Tychoniec, Łukasz, Drozdovskaya, Maria N., Kushwahaa, Tanya, Maria N. Drozdovskaya, Łukasz Tychoniec, Tabone, Benoît, Tanya Kushwahaa   +7 more
core   +2 more sources

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, Hajime Susa, Takashi Hosokawa, Tomoya Kinugawa   +3 more
doaj   +1 more source

Magnetospheric accretion on the fully-convective classical T Tauri star DN Tau [PDF]

, 2013
The MaPP project is supported by the funding agencies of CFHT and TBL (through the allocation of telescope time) and by INSU/CNRS in particular, as well as by the French ‘Agence Nationale pour la Recherche’ (ANR).
Menard, F, G. Hussain, M. M. Romanova, Gregory, S. G.; id_orcid, Dougados, C., S. H. P. Alencar, Ménard, F., Gregory, S. G., Hussain, G., C. Dougados, The Mapp, Donati, J. -F., Alencar, S. H. P., Romanova, M. M., Alencar, SHP, J. Bouvier, Bouvier, J, Gregory, Scott, Dougados, C, Bouvier, J., Jardine, Moira Mary, Hussain, G. A. J., Jardine, M. M., M. M. Jardine, Romanova, MM, Donati, JF, S. G. Gregory, J. -f. Donati   +27 more
core   +1 more source

The Herschel first look at protostars in the Aquila rift [PDF]

, 2010
International audienceAs part of the science demonstration phase of the Herschel mission of the Gould Belt Key Program, the Aquila Rift molecular complex has been observed.
L. Cambrésy, Olofsson, G., White, G., G. Olofsson, Maury A, Bontemps, Sylvain, Ward-Thompson, D., P. Didelon, Motte F, Testi L, Spinoglio L, Konyves, V., Di Giorgo, A. M., n B, Pezzuto, S., B. Merín, S. Molinari, Men', Di Francesco, J., Abergel, A., Martin P, G. White, Cambr#233, L. Testi, P. Hargrave, N. Schneider, Saraceno, P., Bontemps, S., Attard M, Hargrave, P., sy L, A. M. Di Giorgo, Pezzuto S, M. Sauvage, Vavrek R, Molinari S, Attard, M., Men'Shchikov, A., J.-Ph. Bernard, Konyves V, P. Cox, J. Li, J.-P. Baluteau, Li, J., Andre P, D. Ward-Thompson, Sibthorpe, B., Spinoglio, L., Mer#237, Merin, B., Andr#233, Zavagno, Annie, J. Kirk, Roussel, Hervé, Bernard, J.-Ph., White G, A. Abergel, A. Woodcraft, R. Vavrek, Ward-Thompson D, Arzoumanian, D., Peretto, N., D. Russeil, Minier V, P, Woodcraft, Adam, Kirk J, Bernard, J. -Ph., Baluteau J-, Motte, F., Didelon P, Andre, Ph., Didelon, P., Men'shchikov A, Schneider N, White, G. J., H. Roussel, S. Bontemps, Cambresy L, Schneider, N., Cambresy, L., Zavagno A, Koenyves V, Wilson C, Russeil D, V. Minier, Cox P, A. Men'shchikov, Minier, V., Russeil, D., Bernard J, L. Spinoglio, Martin, P., Vavrek, R., Saraceno P, Huang M, T. Prusti, Arzoumanian D, P. Martin, Baluteau, J. -P., Prusti, T., Woodcraft, A., Olofsson G, F. Motte, C. Wilson, Griffin M, Di Francesco J, Woodcraft A, Molinari, S., Sibthorpe, Bruce, Li J, Sauvage M, J. Di Francesco, Kirk, Jason M., Kirk, J., Wilson, C., Sauvage, M., Roussel H, Maury, A., Bernard J-, Baluteau J, Sibthorpe B, Ph. André, Ward-Thompson, Derek, Prusti T, P. Saraceno, D. Arzoumanian, Hargrave P, shchikov A, Roussel, H., Peretto, Nicolas, Testi, L., Abergel A, M. Huang, Merin B, Di Giorgo AM, Huang, M., Griffin, Matthew Joseph, V. Könyves, A. Zavagno, Baluteau, J.-P., Hargrave, Peter Charles, Cox, P., A. Maury, B. Sibthorpe, Peretto N, M. Attard, M. Griffin, Zavagno, A., S. Pezzuto, Bontemps S, di Giorgo A, Griffin, M., N. Peretto   +153 more
core   +1 more source

Observations of phosphorus-bearing molecules in the interstellar medium

Frontiers in Astronomy and Space Sciences
The chemistry of phosphorus (31P) in space is particularly significant due to the key role it plays in biochemistry on Earth. Utilising radio and infrared spectroscopic observations, several key phosphorus-containing molecules have been detected in ...
Francesco Fontani, Francesco Fontani, Francesco Fontani   +2 more
doaj   +1 more source

Opacity Limit for Supermassive Protostars [PDF]

The Astrophysical Journal, 2018
Abstract We present a model for the evolution of supermassive protostars from their formation at until their growth to .
Fernando Becerra, Federico Marinacci, Kohei Inayoshi, Volker Bromm, Lars E. Hernquist   +4 more
openaire   +3 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, Nuria P. Calvet, William J. Fischer, W. J. Forrest, P. Manoj, S. Thomas Megeath, Gary J. Melnick, Joan Najita, David A. Neufeld, Patrick D. Sheehan, Amelia M. Stutz, John J. Tobin   +11 more
openaire   +2 more sources

Observational signatures of outbursting protostars – II. Exploring a wide range of eruptive protostars [PDF]

Monthly Notices of the Royal Astronomical Society, 2019
MNRAS accepted, 8 pages, 9 ...
MacFarlane, Benjamin, Stamatellos, Dimitris, Johnstone, Doug, Herczeg, Gregory, Baek, Giseon, Vivien Chen, Huei-Ru, Kang, Sung-Ju, Lee, Jeong-Eun   +7 more
openaire   +2 more sources