Results 61 to 70 of about 1,342 (185)

FORMATION AND MAINTENANCE OF SPIRAL STRUCTURE IN GALAXIES [PDF]

Symposium - International Astronomical Union, 1985
The formation and maintenance of spiral structure in galaxies is discussed in terms of spiral modes with a general perception consistent with the hypothesis of quasi-stationary spiral structure. The latter is explained in some detail to give it the original proper perspective and to contrast it with recent studies of non-stationary spiral structures ...
C. C. Lin, G. Bertin
openaire   +1 more source

Spin Parity of Spiral Galaxies. I. Corroborative Evidence for Trailing Spirals

The Astrophysical Journal, 2019
Whether the spiral structure of galaxies is trailing or leading has been a subject of debate. We present a new spin parity catalog of 146 spiral galaxies that lists the following three pieces of information: whether the spiral structure observed on the ...
Masanori Iye, Ken-ichi Tadaki, Hideya Fukumoto   +2 more
doaj   +1 more source

Mass extinction and the structure of the milky way [PDF]

Serbian Astronomical Journal, 2013
We use the most up-to-date Milky Way model and solar orbit data in order to test the hypothesis that the Sun's galactic spiral arm crossings cause mass extinction events on Earth. To do this, we created a new model of the Milky Way's spiral arms
Filipović M.D., Horner J., Crawford E.J., Tothill N.F.H., White G.L.   +4 more
doaj   +1 more source

Immuno‐Informatics Design of Multi‐Epitope Vaccine Candidate Against Anaplasma phagocytophilum Using Major Surface Protein 4 (MSP‐4) Antigen

Health Science Reports, Volume 9, Issue 8, August 2026.
ABSTRACT Background and Aims Bovine anaplasmosis is an intracellular tick‐borne, non‐contagious disease caused by gram‐negative bacteria of the family Anaplasmataceae and order Rickettsia. Anaplasma phagocytophilum is the etiological agent for human granulocytic anaplasmosis associated with severe health implications in parts of Europe and the USA and ...
Samson Anjikwi Malgwi, Sinalo Mani, Iliya Dauda Kwoji, Victoria T. Adeleke, Matthew A. Adeleke, Moses Okpeku   +5 more
wiley   +1 more source

Rotation Curves of 967 Spiral Galaxies [PDF]

The Astrophysical Journal Supplement Series, 1995
We present the rotation curves (RCs) of 967 spiral galaxies, obtained by folding and deprojecting the raw optical data by Mathewson et al. (1992). Out of these, we have identified 80 excellent RCs and 820 fair RCs. The 80 excellent RCs are smooth, symmetric, have negligible rms internal error, extend to at least the optical radius, and have high and ...
Persic, M., Salucci, P.
openaire   +3 more sources

Insights into the structure and kinematics of a Milky Way-like galaxy

Astronomy & Astrophysics
Context. Understanding how the large-scale kinematics of the Milky Way (MW) shape the formation and evolution of the interstellar medium remains challenging from an observational perspective, and numerical models that can reproduce the observed structure
Durán-Camacho E., Duarte-Cabral A.
doaj   +1 more source

Statistical Survey of Cosmic Noise Absorption in Conjunction With Plasma Wave Measurements

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract Using a decade of observations from the Canadian Geospace Observatory Riometer Network (GO‐RIO), we selected an east‐west subset of stations near L∼7 $L\sim 7$ to classify cosmic noise absorption (CNA) (a proxy for enhanced D‐region ionization) into two morphologies, simultaneous and drifting, based on the relative timing of signals across the
R. Ghaffari, C. M. Cully, E. Spanswick, R. A. D. Fiori   +3 more
wiley   +1 more source

Gaseous spiral structure and mass drift in spiral galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2014
We use hydrodynamic simulations to investigate nonlinear gas responses to an imposed stellar spiral potential in disk galaxies. The gaseous medium is assumed to be infinitesimally thin, isothermal, and unmagnetized. We consider various spiral-arm models with differing strength and pattern speed.
Kim, Yonghwi, Kim, Woong-Tae
openaire   +2 more sources

Stellar and dust emission profiles of IMEGIN galaxies [PDF]

EPJ Web of Conferences
We present a morphological analysis of a set of spiral galaxies from the NIKA2 Guaranteed Time Large Program, IMEGIN. We have fitted a single Sérsic model on a set of broadband images, from ultra-violet (UV) to millimeter (mm) wavelengths, using the ...
Nersesian A., Adam R., Ade P., Ajeddig H., André P., Artis E., Aussel H., Baes M., Beelen A., Benoît A., Berta S., Bing L., Bourrion O., Calvo M., Catalano A., De Petris M., Désert F.-X., Doyle S., Driessen E.F.C., Ejlali G., Gomez A., Goupy J., Hanser C., Katsioli S., Kéruzoré F., Kramer C., Ladjelate B., Lagache G., Leclercq S., Lestrade J.-F., Macías-Pérez J. F., Madden S.C., Maury A., Mauskopf P., Mayet F., Monfardini A., Moyer-Anin A., Muñoz-Echeverría M., Pantoni L., Perotto L., Pisano G., Ponthieu N., Revéret V., Rigby A.J., Ritacco A., Romero C., Roussel H., Ruppin F., Schuster K., Sievers A., Tucker C., Xilouris E.M., Zylka R.   +52 more
doaj   +1 more source

Year‐round spawning increases throughput of genetic modification of common carp (Cyprinus carpio)

Journal of the World Aquaculture Society, Volume 57, Issue 4, August 2026.
Abstract The common carp (Cyprinus carpio) is an economically and ecologically significant species. It is both one of the most highly produced fish in aquaculture globally and a persistent, widespread invasive species. Research efforts focused on understanding its biology, improving traits for aquaculture, and generating next‐generation carp control ...
Julie Badger, Nicholas K. Jacob, Colby Johnson, Leland Feist, Samuel E. Erickson, Isabel Ameli, Dimitri Perusse, Alex W. Bajcz, Kieran Smith, Kaitlin Machina, Siba R. Das, Przemyslaw G. Bajer, Michael J. Smanski   +12 more
wiley   +1 more source