Results 151 to 160 of about 3,251,679 (315)

Comparison of Bar Formation Mechanisms. I. Does a Tidally Induced Bar Rotate Slower than an Internally Induced Bar?

The Astrophysical Journal
Galactic bars can form via the internal bar instability or external tidal perturbations by other galaxies. We systematically compare the properties of the bars formed through the two mechanisms with a series of controlled N -body simulations that form ...
Yirui Zheng, Juntai Shen
doaj   +1 more source

The MAGPI Survey: the subtle role of environment and not-so-subtle impact of generations of stars on galaxy dynamics [PDF]

Caroline Foster, Sabine Bellstedt, Francesco D’Eugenio, Adriano Poci, Ryan Bagge, K. E. Harborne, Thomas Venville, J. Trevor Mendel, Claudia del P. Lagos, Emily Wisnioski, Tania M. Barone, Andrew Battisti, Stefania Barsanti, Sarah Brough, S. M. Croom, Caro Derkenne, Lucas C. Kimmig, Anilkumar Mailvaganam, Rhea–Silvia Remus, Gauri Sharma, Sarah M. Sweet, Sabine Thater, Lucas M. Valenzuela, Jesse van de Sande, Sam P Vaughan, B. Ziegler   +25 more
openalex   +1 more source

The Megamaser Cosmology Project. XII. VLBI Imaging of H$_{2}$O Maser Emission in Three Active Galaxies and the Effect of AGN Winds on Disk Dynamics [PDF]

, 2019
Cheng‐Yu Kuo, J. A. Braatz, C. M. Violette Impellizzeri, F. Gao, Dominic W. Pesce, M. J. Reid, J. J. Condon, F. Kamali, C. Henkel, Jenny E. Greene   +9 more
openalex   +1 more source

Biodiversity Genomics Research Practices Require Harmonising to Meet Stakeholder Needs in Conservation

Molecular Ecology, EarlyView.
ABSTRACT Biodiversity resilience relies on genetic diversity, which sustains the evolutionary potential of organisms in dynamic ecosystems. Genomics is a powerful tool for accurately estimating genetic diversity across genomes of species and populations.
Elena Buzan, Christian de Guttry, Chiara Bortoluzzi, Nathaniel R. Street, Kay Lucek, Anna Rosling, Lino Ometto, Alice Mouton, Luísa S. Marins, María José Ruiz‐López, José Melo‐Ferreira, Elisabet Ottosson, Camila J. Mazzoni, Robert M. Waterhouse   +13 more
wiley   +1 more source

Comparison of Bar Formation Mechanisms. II. Does a Tidally Induced Bar Grow Faster than an Internally Developed Bar?

The Astrophysical Journal
Bar structures can form internally due to the instability of their host galaxies or externally due to perturbations from other galaxies. We systematically quantify the growth timescales ( τ _bar ) of bars formed through these two mechanisms with a series
Yirui Zheng, Juntai Shen, Xufen Wu, Bin-Hui Chen   +3 more
doaj   +1 more source

The Dynamics of Interstellar Asteroids and Comets within the Galaxy: An Assessment of Local Candidate Source Regions for 1I/’Oumuamua and 2I/Borisov [PDF]

, 2020
Tim Hallatt, Paul Wiegert
openalex   +1 more source

Unravelling Hidden Trophic Interactions Among Sea Urchin Juveniles and Macroinvertebrates by DNA Amplification

Molecular Ecology, EarlyView.
ABSTRACT Rocky reefs may shift between two distinct stable states: productive algal forests, characterised by high abundance and biodiversity of macrofauna, and impoverished barrens, dominated by overgrazing sea urchins. Barren states may persist despite the recovery of adult sea urchin predators, suggesting additional stabilising mechanisms.
Alberto Sutera, Chiara Bonaviri, Francesco Di Trapani, Francesca La Bella, Vesna Macic, Olivera Marković, Bernat Hereu, Roberto De Michele   +7 more
wiley   +1 more source

The DiskMass Survey. XI. Disk Geometries and Star Formation Surface Densities from Ionized Gas Kinematics and Line Intensities for the Full Hα Sample

The Astrophysical Journal Supplement Series
We present H α -region integral-field spectroscopy for 137 low-inclination, intermediate to late-type galaxies. Spectroscopic data, obtained with SparsePak and the Bench Spectrograph on the WIYN 3.5 m telescope, span 6475–6880 Å with an instrumental ...
Robert A. Swaters, David R. Andersen, Matthew A. Bershady, Thomas P. K. Martinsson, Paul Scholz, Marc A.W. Verheijen, Kyle B. Westfall   +6 more
doaj   +1 more source

Accuracy and precision of a sphero‐cylindrical over‐refraction app for smartphones

Ophthalmic and Physiological Optics, EarlyView.
Abstract Purpose To evaluate the accuracy and precision of a web‐based smartphone app designed to measure sphero‐cylindrical over‐refraction. Methods A total of 307 healthy young subjects (22.5 ± 3.4 years) underwent clinical subjective refraction. In addition to each subject's refractive correction, spherical and cylindrical errors from −1.50 to 0.00 ...
Rosa Maria Salmeron‐Campillo, Gines Martinez‐Ros, Jose Angel Diaz‐Guirado, Carmen Travel‐Alarcon, Mateusz Jaskulski, Norberto Lopez‐Gil   +5 more
wiley   +1 more source

Is Less More? Field Evidence on the Impact of Anti‐Bribery Policies on Employee Knowledge and Corrupt Behavior

Regulation &Governance, EarlyView.
ABSTRACT Companies increasingly adopt internal norms to enhance compliance with legal rules. However, the rapid growth in volume and complexity of such internal rules may obstruct employee knowledge and understanding of such internal rules, and therefore also their compliance.
Nils Köbis, Sharon Oded, Anne Leonore de Bruijn, Shuyu Huang, Benjamin van Rooij   +4 more
wiley   +1 more source