Results 61 to 70 of about 22,763 (197)

On the Magnetic Field Properties of Protostellar Envelopes in Orion

The Astrophysical Journal Letters
We present 870 μ m polarimetric observations toward 61 protostars in the Orion molecular clouds with ∼400 au (1″) resolution using the Atacama Large Millimeter/submillimeter Array.
Bo Huang, Josep M. Girart, Ian W. Stephens, Manuel Fernández López, Hector G. Arce, John M. Carpenter, Paulo Cortes, Erin G. Cox, Rachel Friesen, Valentin J. M. Le Gouellec, Charles L. H. Hull, Nicole Karnath, Woojin Kwon, Zhi-Yun Li, Leslie W. Looney, S. Thomas Megeath, Philip C. Myers, Nadia M. Murillo, Jaime E. Pineda, Sarah Sadavoy, Álvaro Sánchez-Monge, Patricio Sanhueza, John J. Tobin, Qizhou Zhang, James M. Jackson, Dominique Segura-Cox   +25 more
doaj   +1 more source

Formation of Massive and Wide First-star Binaries in Radiation Hydrodynamic Simulations

The Astrophysical Journal, 2023
We study the formation of Population III stars by performing radiation hydrodynamic simulations for three different initial clouds extracted from cosmological hydrodynamic simulations.
Kazuyuki Sugimura, Tomoaki Matsumoto, Takashi Hosokawa, Shingo Hirano, Kazuyuki Omukai   +4 more
doaj   +1 more source

Physical structure of the envelopes of intermediate-mass protostars

, 2010
Context: Intermediate mass protostars provide a bridge between low- and high-mass protostars. Furthermore, they are an important component of the UV interstellar radiation field.
A. Fuente, Andre, Ayala, B. Lefloch, Bechis, Beltrán, Beltrán, Boogert, C. Ceccarelli, C. Kahane, Casali, Caux, Ceccarelli, Ceccarelli, Cesaroni, Chandler, Chini, Codella, Codella, Crimier, D. Johnstone, de Gregorio-Monsalvo, Di Francesco, Doty, Draine, E. van Dishoeck, Eiroa, Eiroa, Eislöffel, Evans, F. Wyrowski, Faure, Faure, Felli, Flower, Frerking, Froebrich, Fuente, Fuente, Fuente, Fuente, Fukui, Giovannetti, Gomez, Gondhalekar, Greve, Guesten, Habing, Hartigan, Harvey, Hatchell, Hennebelle, Herbst, Hillenbrand, Hodapp, Hogerheijde, Huard, Hurt, Ivezic, J. R. Rizzo, Jørgensen, Jørgensen, Jørgensen, Kaas, Krumholz, Ladd, Larsson, Larsson, Launhardt, Launhardt, Lefloch, Li, Lizano, M. Tafalla, Mannings, Mannings, Matthews, McKee, McLaughlin, McLaughlin, Miranda, Moro-Martín, Motte, Mueller, N. Crimier, Neri, Nisini, Noriega-Crespo, Osorio, Ossenkopf, Osterbrock, P. Caselli, Palla, Parise, Patel, R. Plume, Rodriguez, Rodriguez, S. Maret, Sandell, Saraceno, Schreyer, Schöier, Sellgren, Serabyn, Shevchenko, Shirley, Shu, Smith, Stahler, Strom, Strom, Sugitani, Sugitani, T. Alonso-Albi, Testi, Testi, Tofani, Troscompt, van der Tak, Van der Tak, Vastel, Visser, Wang, Weikard, White, Wilking, Williams, Williams, Wolf-Chase, Young, Yun, Yun   +132 more
core   +3 more sources

The VLA/ALMA Nascent Disk and Multiplicity (VANDAM) Survey of Orion Protostars. II. A Statistical Characterization of Class 0 and Class I Protostellar Disks [PDF]

, 2020
We have conducted a survey of 328 protostars in the Orion molecular clouds with the Atacama Large Millimeter/submillimeter Array at 0.87 mm at a resolution of ~0.”1 (40 au), including observations with the Very Large Array at 9 mm toward 148 protostars ...
Furlan, Elise, Tobin, John J.
core  

Gas dynamics in Massive Dense Cores in Cygnus-X [PDF]

, 2010
We study the kinematic properties of dense gas surrounding massive protostars recognized by Bontemps et a. (2010) in a sample of five Massive Dense Cores in Cygnus-X.
Bontemps, S., Csengeri, T., Dib, S., Motte, F., Schneider, N.   +4 more
core   +3 more sources

Formation of Methanol via Fischer‐Tropsch Catalysis by Cosmic Iron Sulphide

ChemPhysChem, Volume 25, Issue 17, September 2, 2024.
Periodic quantum mechanical simulations evidence the potentiality to synthesise methanol through a Fischer‐Tropsch mechanism in different astrophysical environments facilitated by the catalytic properties of cosmic FeS grains, which are enhanced by the presence of naturally‐occurring point surface defects.
Berta Martinez‐Bachs, Alexia Anguera‐Gonzalez, Gerard Pareras, Albert Rimola   +3 more
wiley   +1 more source

Star formation in Perseus. IV. Mass dependent evolution of dense cores [PDF]

, 2008
In our SCUBA survey of Perseus, we find that the fraction of protostellar cores increases towards higher masses and the most massive cores are all protostellar.
Fuller, Gary, Hatchell, Jennifer
core   +3 more sources

Sulforaphane and ophthalmic diseases

Food Science &Nutrition, Volume 12, Issue 8, Page 5296-5311, August 2024.
Sulforaphane (SFN) is an organosulfur compound categorized as an isothiocyanate (ITC), primarily extracted from cruciferous vegetables like broccoli and cabbage. This review comprehensively outlines recent research on SFN, elucidates its mechanisms of action, and discusses potential therapeutic benefits for eye disorders such as age‐related macular ...
Yichi Zhang, Xiaojing Zhao, Yang Liu, Xiuxia Yang   +3 more
wiley   +1 more source

A VLA search for young protostars embedded in dense cores [PDF]

, 2006
Four dense cores, L1582A, L1689A, B133 and B68, classified as prestellar in terms of the absence of detectable NIR emission, are observed at radio wavelengths to investigate whether they nurture very young protostars.
A. P. Whitworth, André, André, André, André, André, Anglada, Beltrán, Bontemps, Bontemps, Bourke, Bourke, Cassen, Condon, Condon, Curiel, Curiel, Curiel, D. Stamatellos, D. Ward-Thompson, Dame, Douglas, Eiroa, Feigelson, Goodwin, Griffith, Harvey, Huard, Kirk, Leous, Martin, Myers, Neufeld, Neufeld, Nutter, Raga, Rodríguez, Rodríguez, Rodríguez, S. Bontemps, Stamatellos, Stamatellos, Ward-Thompson, Ward-Thompson, Ward-Thompson, Winkler, Young   +46 more
core   +6 more sources

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, Gerardo Dominguez, Kana Amano, Megumi Matsumoto, Yuri Fujioka, Eiichi Kagawa, Tomoki Nakamura, Shogo Tachibana, Tomoyo Morita, Mizuha Kikuiri, Hisayoshi Yurimoto, Takaaki Noguchi, Ryuji Okazaki, Hikaru Yabuta, Hiroshi Naraoka, Kanako Sakamoto, Toru Yada, Masahiro Nishimura, Aiko Nakato, Akiko Miyazaki, Kasumi Yogata, Masano Abe, Tatsuaki Okada, Tomohiro Usui, Makoto Yoshikawa, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Satoru Nakazawa, Sei‐ichiro Watanabe, Yuichi Tsuda, Hayabusa2 Initial Analysis Stone Team   +31 more
wiley   +1 more source