Results 111 to 120 of about 73,146 (266)

Magnetic-Field Vector Maps of Nearby Spiral Galaxies

Galaxies, 2019
We present a method for determining the directions of magnetic-field vectors in a spiral galaxy using two synchrotron polarization maps, an optical image, and a velocity field.
Hiroyuki Nakanishi, Kohei Kurahara, Kenta Anraku   +2 more
doaj   +1 more source

A Milky Way-like barred spiral galaxy at a redshift of 3. [PDF]

Nature, 2023
Costantin L, Pérez-González PG, Guo Y, Buttitta C, Jogee S, Bagley MB, Barro G, Kartaltepe JS, Koekemoer AM, Cabello C, Corsini EM, Méndez-Abreu J, de la Vega A, Iyer KG, Bisigello L, Cheng Y, Morelli L, Arrabal Haro P, Buitrago F, Cooper MC, Dekel A, Dickinson M, Finkelstein SL, Giavalisco M, Holwerda BW, Huertas-Company M, Lucas RA, Papovich C, Pirzkal N, Seillé LM, Vega-Ferrero J, Wuyts S, Yung LYA.   +32 more
europepmc   +1 more source

Surface Photometry of Spiral Galaxy NGC 5005 and Elliptical Galaxy NGC 4278

مجلة بغداد للعلوم, 2018
Two galaxies have been chosen, spiral galaxy NGC 5005 and elliptical galaxy NGC 4278 to study their photometric properties by using surface photometric techniques with griz-Filters. Observations are obtained from the Sloan Digital Sky Survey (SDSS).
Baghdad Science Journal
doaj   +1 more source

Study photometric properties of spiral galaxy NGC 4448 using CCD camera with multiband filters

Iraqi Journal of Physics, 2018
The goal of our study is to perform detailed multiband surface photometry of the spiral galaxy NGC 4448 and its brightest star-forming regions. The structure and composition of the stellar population in the surface brightness galaxy NGC 4448 was studied
Sinan H. Ali
doaj   +1 more source

Perspectives. [PDF]

AJNR Am J Neuroradiol, 2023
Ross JS.
europepmc   +3 more sources

Morphology and Kinematics of the Gas in M51: How Interaction with NGC 5195 Has Molded the Structure of Its Arms

The Astrophysical Journal
The Whirlpool Galaxy is a well-studied grand design galaxy with two major spiral arms, and a large satellite NGC 5195. The arms both show long uniform sections with perturbations (“kinks” or sharp turns) in specific regions.
Joan Font, John E. Beckman, Benoît Epinat, Clare L. Dobbs, Miguel Querejeta   +4 more
doaj   +1 more source

Dynamically Driven Evolution of the Interstellar Medium in M51 [PDF]

, 2009
Massive star formation occurs in giant molecular clouds (GMCs); an understanding of the evolution of GMCs is a prerequisite to develop theories of star formation and galaxy evolution. We report the highest-fidelity observations of the grand-design spiral
Bock, Douglas C.-J., Carpenter, John M., Corder, Stuartt A., Hawkins, David, Hodges, Mark, Kemball, Athol, Koda, Jin, La Vigne, Misty A., Lamb, James W., Patience, Jenny, Plambeck, Richard L., Potts, Ashley E., Pound, Marc W., Sargent, Anneila I., Sawada, Tsuyoshi, Scott, Stephen L., Scoville, Nick, Teuben, Peter, Voguel, Stuart N., White, Stephen M., Woody, David P., Wright, Melvyn C. H., Zauderer, B. Ashley   +22 more
core  

The Impacts of Bars, Spirals, and Bulge Size on Gas-phase Metallicity Gradients in MaNGA Galaxies

The Astrophysical Journal
As galaxies evolve over time, the orbits of their constituent stars are expected to change in size and shape, moving stars away from their birth radius. Radial gas flows are also expected. Spiral arms and bars in galaxies are predicted to help drive this
M. E. Wisz, Karen L. Masters, Kathryne J. Daniel, David V. Stark, Francesco Belfiore   +4 more
doaj   +1 more source

Galaxy Classification Using EWGC

Universe
The Enhanced Wide-field Galaxy Classification Network (EWGC) is a novel architecture designed to classify spiral and elliptical galaxies using Wide-field Infrared Survey Explorer (WISE) images.
Yunyan Nie, Zhiren Pan, Jianwei Zhou, Bo Qiu, A-Li Luo, Chong Luo, Xiaodong Luan   +6 more
doaj   +1 more source

A Simple Model for Explaining Galaxy Rotation Curves

Galaxies, 2018
A new simple expression for the circular velocity of spiral galaxies is proposed and tested against HI Nearby Galaxy Survey (THINGS) data set. Its accuracy is compared with the one coming from MOND.
Aneta Wojnar, Ciprian A. Sporea, Andrzej Borowiec   +2 more
doaj   +1 more source