Results 111 to 120 of about 30,254 (217)

The Role of the Magnetic Field Orientation on the Variability of the Martian Topside Ionosphere Using MARSIS‐Mars Express Data

Journal of Geophysical Research: Planets, Volume 130, Issue 5, May 2025.
Abstract Mars, without a global dipole magnetic field, has its atmosphere directly exposed to the impinging solar wind, producing a complex interaction due to the remnant crustal magnetic fields, which, especially in the southern hemisphere, have spatially varying strengths and inclinations. “Mini‐magnetospheres” generated over the strong crustal field
Dikshita Meggi, Beatriz Sánchez‐Cano, Mark Lester, Simon Joyce, Katerina Stergiopoulou, Catherine Regan, David Andrews, Shaosui Xu, Xiaohua Fang, Olivier Witasse, Christopher M. Fowler   +10 more
wiley   +1 more source

Barred Galaxies in the Abell 901/2 Supercluster with STAGES

, 2009
We present a study of bar and host disk evolution in a dense cluster environment, based on a sample of ~800 bright (MV
Abazajian, Amanda Heiderman, Andy Taylor, Asmus Böhm, Athanassoula, Athanassoula, Balogh, Barazza, Barden, Bell, Bell, Block, Boris Häußler, Buta, Catherine Heymans, Chien Y. Peng, Christian Wolf, Combes, Combes, Daniel H. McIntosh, David Bacon, de Vaucouleurs, Debattista, Debattista, Dubinski, Eelco van Kampen, Elmegreen, Elmegreen, Eric F. Bell, Eskridge, Eskridge, Fabio D. Barazza, Fisher, Gray, Heiderman, Heller, Irina Marinova, Jedrzejewski, Jogee, Jogee, Jogee, Jogee, Jogee, Jogee, John A. R. Caldwell, Kassin, Klaus Meisenheimer, Knapen, Knud Jahnke, Koopmann, Kormendy, Kyle Lane, Laine, Laine, Laurikainen, Laurikainen, Lutz Wisotzki, Marco Barden, Marinova, Martinez-Valpuesta, Meghan E. Gray, Menéndez-Delmestre, Michael Balogh, Mulchaey, Persic, Rachel Somerville, Ravindranath, Reese, Regan, Romano-Díaz, Schneider, Sebastian F. Sánchez, Sellwood, Shardha Jogee, Sheth, Sheth, Sheth, van den Bergh, Weinberg, Weinzirl, Xianzhong Zheng   +80 more
core   +1 more source

Ring Star Formation Rates in Barred and Nonbarred Galaxies

, 2010
Nonbarred ringed galaxies are relatively normal galaxies showing bright rings of star formation in spite of lacking a strong bar. This morphology is interesting because it is generally accepted that a typical ring forms when material collects near a ...
Athanassoula, Bournaud, Buta, Buta, Buta, Buta, Buta, Buta, Buta, Buta, Byrd, Combes, Contopoulos, Contopoulos, de Vaucouleurs, Donovan, E. Laurikainen, Finn, Friedli, Grouchy, Grouchy, H. Salo, Hameed, Hameed, Howarth, Kennicutt, Kohoutek, Koopmann, Madore, Mark, Martinet, McCall, R. D. Grouchy, R. J. Buta, Rautiainen, Regan, Salo, Sandage, Sandage, Schinnerer, Schwarz, Schwarz, Schwarz, Seaton, Sellwood, Shen, Sil'chenko, Tamburro, Tomita, Treuthardt, Wozniak, Wu, Wu, Yasuda, Zhang   +54 more
core   +1 more source

Supernovae and their host galaxies - II. The relative frequencies of supernovae types in spirals

, 2014
We present an analysis of the relative frequencies of different supernova (SN) types in spirals with various morphologies and in barred or unbarred galaxies.
Adibekyan, V. Zh., Aramyan, L. S., Bertin, E., de Lapparent, V., Gomes, J. M., Hakobyan, A. A., Kunth, D., Mamon, G. A., Nazaryan, T. A., Petrosian, A. R., Turatto, M.   +10 more
core   +2 more sources

The Tully-Fisher Relation of Barred Galaxies

, 2003
We present new data exploring the scaling relations, such as the Tully-Fisher relation (TFR), of bright barred and unbarred galaxies. A primary motivation for this study is to establish whether barredness correlates with, and is a consequence of, virial ...
Bottema R., Corsini E. M., David R. Andersen, Hans‐Walter Rix, Klypin A., Lauren A. MacArthur, Matthew A. Bershady, Stephane Courteau, Tully R. B., Zhao H.   +9 more
core   +1 more source

Inner Workings: Astronomers are redrawing our corner of the Milky Way. [PDF]

Proc Natl Acad Sci U S A, 2021
Croswell K.
europepmc   +1 more source

Inner Molecular Rings in Barred Galaxies: BIMA SONG CO Observations

, 2002
Although inner star-forming rings are common in optical images of barred spiral galaxies, observational evidence for the accompanying molecular gas has been scarce.
Buta R., Combes F., Kartik Sheth, Krause M., Michael W. Regan, Peter J, Schwarz M. P., Stuart N. Vogel, Teuben, , van der Kruit P.   +9 more
core   +1 more source

Bar Diagnostics in Edge-On Spiral Galaxies. II. Hydrodynamical Simulations

, 1999
We develop diagnostics based on gas kinematics to identify the presence of a bar in an edge-on spiral galaxy and determine its orientation. We use position-velocity diagrams (PVDs) obtained by projecting edge-on two-dimensional hydrodynamical simulations
Athanassoula E., Athanassoula E., Athanassoula E., Binney J., Binney J., Bureau M., Combes F., Combes F., Combes F., de Carvalho R. R., E. Athanassoula, Ferrers N. M., Gingold R. A., Hernquist L., Kuzmin G., Lindblad P. A. B., M. Bureau, Mulder W. A., Papayannopoulos T., Schwarz M. P., Teuben P., Teuben P. J., van Albada G. D., van Albada G. D.   +23 more
core   +1 more source

Astronomia ex machina: a history, primer and outlook on neural networks in astronomy. [PDF]

R Soc Open Sci, 2023
Smith MJ, Geach JE.
europepmc   +1 more source

Bars do drive spiral density waves

, 2010
Recently, Buta etal. (2009) examined the question "Do Bars Drive Spiral Density Waves?", an idea supported by theoretical studies and also from a preliminary observational analysis Block etal (2004).
Athanassoula, Bertin, Binney, Block, Bosma, Buta, Buta, Buta, Buta, Elmegreen, Eskridge, Knapen, Lindblad, Masset, Rautiainen, Salo, Salo, Sellwood, Sellwood, Sellwood, Sheth, Sheth, Skrutskie, Speltincx, Toomre   +24 more
core   +1 more source