Results 61 to 70 of about 61,724 (212)

The Identification of a Dusty Multiarm Spiral Galaxy at z = 3.06 with JWST and ALMA

The Astrophysical Journal Letters, 2022
Spiral arms serve crucial purposes in star formation and galaxy evolution. In this paper, we report the identification of “A2744-DSG- z 3,” a dusty, multiarm spiral galaxy at z = 3.059 using the James Webb Space Telescope (JWST) NIRISS imaging and grism ...
Yunjing Wu, Zheng Cai, Fengwu Sun, Fuyan Bian, Xiaojing Lin, Zihao Li, Mingyu Li, Franz E. Bauer, Eiichi Egami, Xiaohui Fan, Jorge González-López, Jianan Li, Feige Wang, Jinyi Yang, Shiwu Zhang, Siwei Zou   +15 more
doaj   +1 more source

Measurement of Galactic Logarithmic Spiral Arm Pitch Angle Using Two-Dimensional Fast Fourier Transform Decomposition

, 2012
A logarithmic spiral is a prominent feature appearing in a majority of observed galaxies. This feature has long been associated with the traditional Hubble classification scheme, but historical quotes of pitch angle of spiral galaxies have been almost ...
Barden, Barger, Benjamin L. Davis, Claud H. S. Lacy, Considere, Daniel Kennefick, Davis, de Vaucouleurs, Douglas W. Shields, Eskridge, Ferrarese, Gebhardt, Gebhardt, Graham, Grosbol, Herschel, Ho, Häring, Ivânio Puerari, Jedrzejewski, Joel C. Berrier, Julia Kennefick, Kormendy, Ma, Magorrian, Marc S. Seigar, Marconi, Martínez-García, Press, Puerari, Puerari, Saraiva Schroeder, Seiden, Seigar, Seigar, Sérsic, Thornley, Tody, Vestergaard   +38 more
core   +1 more source

Gravitational torques in spiral galaxies: gas accretion as a driving mechanism of galactic evolution [PDF]

, 2002
The distribution of gravitational torques and bar strengths in the local Universe is derived from a detailed study of 163 galaxies observed in the near-infrared. The results are compared with numerical models for spiral galaxy evolution. It is found that
Abraham, Block, Bournaud, Buta, Combes, D. L. Block, F. Bournaud, F. Combes, Gerin, I. Puerari, Pfenniger, Pfenniger, Quillen, R. Buta, Sancisi, Toth   +15 more
core   +3 more sources

Dark Matter in Spiral Galaxies [PDF]

Symposium - International Astronomical Union, 1995
In this review I will concentrate on three questions concerning the issue of dark matter in spiral galaxies. In the first place (and for the most part) I will discuss the analysis of rotation curves and the question whether the “maximum–disk hypothesis” is valid.
openaire   +2 more sources

Story2Board: A Training‐Free Approach for Expressive Visual Storytelling

Computer Graphics Forum, EarlyView.
Abstract We present Story2Board, a training‐free framework for expressive storyboard generation from natural language. Existing methods narrowly focus on subject identity, overlooking key aspects of visual storytelling such as spatial composition, background evolution, and narrative pacing.
D. Dinkevich, M. Levy, O. Avrahami, D. Samuel, D. Lischinski   +4 more
wiley   +1 more source

Dwarfs from the Dark (Energy Survey): a machine learning approach to classify dwarf galaxies from multi-band images

The Open Journal of Astrophysics, 2021
Countless low-surface brightness objects - including spiral galaxies, dwarf galaxies, and noise patterns - have been detected in recent large surveys.
Oliver Müller, Eva Schnider
doaj   +1 more source

Noble gases and nitrogen in material from asteroid Bennu

Meteoritics &Planetary Science, EarlyView.
Abstract We report the elemental and isotopic abundances of all stable noble gases (helium, neon, argon, krypton, and xenon) in eight particles from asteroid Bennu returned by NASA's OSIRIS‐REx mission. We also report nitrogen abundances and isotopic ratios that were analyzed alongside neon and argon in four additional Bennu particles.
B. Marty, L. Zimmermann, E. Füri, D. V. Bekaert, J. J. Barnes, A. N. Nguyen, H. C. Connolly, D. S. Lauretta   +7 more
wiley   +1 more source

Modelling Spiral Galaxies

, 2022
We develop a new technique to equip models of spiral galaxies with self-consistent dynamics that match observations. We apply our technique and construct a model for the Milky Way with a dynamical interstellar medium (ISM). In simulations a four-arm spiral structure emerges from this model that is similar to the one observed in the Milky Way's ISM ...
openaire   +2 more sources

Magnetic fields in spiral galaxies [PDF]

The Astronomy and Astrophysics Review, 1990
Published in A&ARev (2016) 24 ...
openaire   +5 more sources

Harnessing Bulk‐Segregant Mapping to Identify Trait‐Associated Genes in the Allopolyploid Model Plant Nicotiana benthamiana

Plant Biotechnology Journal, EarlyView.
ABSTRACT Forward genetics has been instrumental in identifying genes underlying desirable traits, yet its application to polyploid plants, many of which are key agricultural crops, remains challenging due to their genomic complexity. Therefore, we developed BenthMap, a bulk segregant analysis platform for high‐throughput trait mapping and gene ...
Zuba Ahmed, Jiyuan An, Satomi Hayashi, Julia Bally, Chris Winefield, Peter M. Waterhouse   +5 more
wiley   +1 more source