Results 31 to 40 of about 206 (176)

A Comprehensive Analysis of Rovibrational CO in the Era of JWST

The Astronomical Journal
We present an analysis of CO rovibrational emission lines in the 183 infrared spectra of nearby Class II objects obtained with the NIRSPEC instrument on the Keck II telescope over the past two decades.
D. Annie Dickson-Vandervelde, Colette Salyk, Geoffrey A. Blake, Clara Ross, Adwin Boogert, Klaus Pontoppidan   +5 more
doaj   +1 more source

Spectacle and Spy Stories: The 1954 Royal Commission on Espionage

Australian Journal of Politics &History, EarlyView.
ABSTRACT The Menzies government's 1954 royal commission, established to investigate Soviet espionage in Australia, is well known as the backdrop to the Labor Party split. It saw opposition leader H.V. Evatt's demise and ushered in an almost 20‐year period of Liberal Party governance.
Ebony Nilsson
wiley   +1 more source

A Predicted Great Dimming of T Tauri: Has it Begun?

The Astronomical Journal
The optical star in the T Tauri triple system is the prototype of young Sun-like stars in our galaxy. This complex and dynamic system has evidence for misaligned disks and outflows, and molecular material in a circumbinary ring that obscures the southern
Tracy L. Beck
doaj   +1 more source

Twenty-five Years of Accretion onto the Classical T Tauri Star TW Hya

The Astrophysical Journal, 2023
Accretion plays a central role in the physics that governs the evolution and dispersal of protoplanetary disks. The primary goal of this paper is to analyze the stability over time of the mass accretion rate onto TW Hya, the nearest accreting solar-mass ...
Gregory J. Herczeg, Yuguang Chen, Jean-Francois Donati, Andrea K. Dupree, Frederick M. Walter, Lynne A. Hillenbrand, Christopher M. Johns-Krull, Carlo F. Manara, Hans Moritz Günther, Min Fang, P. Christian Schneider, Jeff A. Valenti, Silvia H. P. Alencar, Laura Venuti, Juan Manuel Alcalá, Antonio Frasca, Nicole Arulanantham, Jeffrey L. Linsky, Jerome Bouvier, Nancy S. Brickhouse, Nuria Calvet, Catherine C. Espaillat, Justyn Campbell-White, John M. Carpenter, Seok-Jun Chang, Kelle L. Cruz, S. E. Dahm, Jochen Eislöffel, Suzan Edwards, William J. Fischer, Zhen Guo, Thomas Henning, Tao Ji, Jessy Jose, Joel H. Kastner, Ralf Launhardt, David A. Principe, Connor E. Robinson, Javier Serna, Michal Siwak, Michael F. Sterzik, Shinsuke Takasao   +41 more
doaj   +1 more source

Genome‐scale insights into metabolic streamlining and photosynthetic energy balance in the extremophile green alga Picocystis salinarum (Picocystophyceae, Chlorophyta)

Journal of Phycology, EarlyView.
Abstract Picocystis salinarum is an early‐diverging chlorophyte and the sole described member of the Picocystophyceae, frequently dominating hypersaline and alkaline lakes despite extreme physicochemical constraints. To elucidate the genomic foundations of its ecological success, we generated a fully annotated, chromosome‐scale nuclear genome assembly ...
Claude Lemieux, Christian Otis, Monique Turmel   +2 more
wiley   +1 more source

Magnetospheric Accretion in Classical T Tauri Stars

, 2006
The inner 0.1 AU around accreting T Tauri stars hold clues to many physical processes that characterize the early evolution of solar-type stars. The accretion-ejection connection takes place at least in part in this compact magnetized region around the central star, with the inner disk edge interacting with the star's magnetosphere thus leading ...
Bouvier, J., Alencar, S. H. P., Harries, T. J., Johns-Krull, C. M., Romanova, M. M.   +4 more
openaire   +2 more sources

The Comprehensive Archive of Substellar and Planetary Accretion Rates

The Astronomical Journal, 2023
Accretion rates ( $\dot{M}$ ) of young stars show a strong correlation with object mass ( M ); however, extension of the $\dot{M}\mbox{--}M$ relation into the substellar regime is less certain. Here, we present the Comprehensive Archive of Substellar and
S. K. Betti, K. B. Follette, K. Ward-Duong, A. E. Peck, Y. Aoyama, J. Bary, B. Dacus, S. Edwards, G.-D. Marleau, K. Mohamed, J. Palmo, C. Plunkett, C. Robinson, H. Wang   +13 more
doaj   +1 more source

Osmomixotrophy in Phytoplankton: Analysis of 46 Strains From Marine and Freshwater Habitats Indicates Prevalent Use of Organic Compounds

Environmental Microbiology Reports, Volume 18, Issue 5, October 2026.
Analysing thousands of data points across 46 marine and freshwater strains, this study underscores that osmomixotrophy is a common, rather than exceptional, metabolic strategy in phytoplankton. These findings challenge the autotrophic paradigm, demonstrating that organic matter acquisition is a default state with significant implications for our ...
Nele Martens, Luisa Listmann, Jette Ludewigs, C.‐Elisa Schaum   +3 more
wiley   +1 more source

Mass Accretion, Spectral, and Photometric Properties of T Tauri Stars in Taurus Based on TESS and LAMOST

The Astronomical Journal, 2023
We present the analysis of 16 classical T Tauri stars (CTTSs) using LAMOST and TESS data, investigating spectral properties, photometric variations, and mass accretion rates.
Chia-Lung Lin, Wing-Huen Ip, Yao Hsiao, Tzu-Heng Chang, Yi-han Song, A-Li Luo   +5 more
doaj   +1 more source

Rethinking Political Islam in Iran: Contestation, Authority, and Reform

Middle East Policy, Volume 33, Issue 3, Autumn (Fall) 2026.
Abstract Political Islam in Iran is frequently portrayed in Western scholarship and policy discourse as a unified and rigid ideological system rooted in the 1979 Islamic Revolution. However, this article contends that it operates as a plural and internally contested field in which state‐directed, reformist‐clerical, and civic interpretations compete ...
Nagapushpa Devendra
wiley   +1 more source