Results 61 to 70 of about 25,326 (243)

Characterizing Magnetic Properties of Young Protostars in Orion

The Astrophysical Journal
The B -field Orion Protostellar Survey (BOPS) recently obtained polarimetric observations at 870 μ m toward 61 protostars in the Orion molecular clouds with ∼1″ spatial resolution using the Atacama Large Millimeter/submillimeter Array.
Bo Huang, Josep M. Girart, Ian W. Stephens, Philip C. Myers, Qizhou Zhang, Paulo Cortes, Álvaro Sánchez-Monge, Manuel Fernández López, Valentin J. M. Le Gouellec, Tom Megeath, Nadia M. Murillo, John M. Carpenter, Zhi-Yun Li, Junhao Liu, Leslie W. Looney, Sarah Sadavoy, Nicole Karnath, Woojin Kwon   +17 more
doaj   +1 more source

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

Anomalous Microwave Emission from Star Forming Regions

Advances in Astronomy, Volume 2013, Issue 1, 2013., 2013
The evidence for microwave emission from spinning dust grains has been strengthened considerably by its detection in a number of discrete astrophysical objects associated with star formation. These detections, in combination with statistical constraints on its presence on large angular scales in the diffuse ISM, have provided strong observational ...
Anna M. M. Scaife, Laurent Verstraete
wiley   +1 more source

Properties of the Youngest Protostars in Perseus, Serpens, and Ophiuchus [PDF]

, 2008
We present an unbiased census of deeply embedded protostars in Perseus, Serpens, and Ophiuchus, assembled by combining large-scale 1.1 mm Bolocam continuum and Spitzer Legacy surveys.
André, Anneila I. Sargent, Aspin, Cieza, Di Francesco, Dunham, Ebert, Enoch, Enoch, Enoch, Evans, Evans, Habets, Harvey, Harvey, Harvey, Indebetouw, Jason Glenn, Jayawardhana, Jeans, Jørgensen, Jørgensen, Jørgensen, Jørgensen, Kirk, Lada, Looney, Melissa L. Enoch, Merín, Myers, Natta, Neal J. Evans, Ossenkopf, Pringle, Rebull, Robitaille, Sandell, Shirley, Spezzi, Tassis, Vieira, Visser, Vorobyov, Walawender, Ward-Thompson, Whitney, Wu, Young, Young, Young   +49 more
core   +2 more sources

Miller and Urey in the Universe: detecting prebiotic molecules in star-forming regions

Revista Brasileira de Ensino de Física
Astronomical observations have revealed that the simple molecules used in the Miller and Urey experiments (H2O, CH4, NH3, and H2), along with methanol, carbon monoxide, and carbon dioxide, among many others, are abundant in solid form in molecular clouds
Caroline Antunes Rosa, Alexandre Bergantini, Marcelo Emilio, Enio Frota da Silveira, Laerte Andrade, Eduardo Janot Pacheco, Claudia Lage   +6 more
doaj   +1 more source

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

Episodic accretion, protostellar radiative feedback, and their role in low-mass star formation

, 2012
Protostars grow in mass by accreting material through their discs, and this accretion is initially their main source of luminosity. The resulting radiative feedback heats the environments of young protostars, and may thereby suppress further ...
Hubber, David A., Stamatellos, Dimitris, Whitworth, Anthony P.   +2 more
core   +1 more source

A Mid-Infrared Study of the Class 0 Cluster in LDN 1448 [PDF]

, 2005
We present ground-based mid-infrared observations of Class 0 protostars in LDN 1448. Of the five known protostars in this cloud, we detected two, L1448N:A and L1448C, at 12.5, 17.9, 20.8, and 24.5 microns, and a third, L1448 IRS 2, at 24.5 microns.
Bachiller R., Bachiller R., Bachiller R., Bachiller R., Bachiller R., Bontemps S., David M. Cole, Eisloffel J., Grace Wolf-Chase, Guilloteau S., Hildebrand R., JoAnn C. O'Linger, Michael E. Ressler, Neckel T., Saraceno P., Volgnau N.   +15 more
core   +2 more sources

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

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