Results 121 to 130 of about 144,718 (240)

Perspectives. [PDF]

AJNR Am J Neuroradiol, 2023
Ross JS.
europepmc   +2 more sources

Identification of Intermediate-mass Black Hole Candidates among a Sample of Sd Galaxies

The Astrophysical Journal
We analyzed images of every northern hemisphere Sd galaxy listed in the Third Reference Catalogue of Bright Galaxies with a relatively face-on inclination ( θ ≤ 30°). Specifically, we measured the spiral arms’ winding angle, ϕ , in 85 galaxies.
Benjamin L. Davis, Alister W. Graham, Roberto Soria, Zehao Jin, Igor D. Karachentsev, Valentina E. Karachentseva, Elena D’Onghia   +6 more
doaj   +1 more source

A summary and assessment of current 21-cm results concerning spiral and disk structures in our galaxy [PDF]

, 1959
J. H. Oort
openalex   +1 more source

Formation of Spiral Galaxies [PDF]

International Astronomical Union Colloquium, 1977
Conventionally, two major components of spiral galaxies are distinguished: (1) a “spheroidal component”, which includes the central bulge and the surrounding halo, and (2) a “disc component”, which is basically flat and circular but is often warped at the edges. Other structures, such as bars or rings, may also be present, but they are probably of less
openaire   +2 more sources

The Role of Spiral Arms in Galaxies

The Astrophysical Journal
We test the influence of spiral arms on the star formation activity of disk galaxies by constructing and fitting multiwavelength spectral energy distributions for the two nearby spiral galaxies NGC 628 and NGC 4321, at a spatial scale of 1–1.5 kpc ...
Bingqing Sun, Daniela Calzetti, Andrew J. Battisti   +2 more
doaj   +1 more source

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

A Model of a Spiral Galaxy [PDF]

, 1951
G. C. Mevittie, C. Payne-Gaposchkin
openalex   +1 more source

Outskirts of spiral galaxies [PDF]

Proceedings of the International Astronomical Union, 2016
AbstractI present an overview of the recent star formation activity in the outer disks of spiral galaxies, from the observational standpoint, with emphasis on the gas content, the star formation law, the metallicity and the stellar populations.
openaire   +2 more sources

Spiral structure and the rotation of galaxies [PDF]

, 1958
B. A. Vorontsov-Vel'Yaminov
openalex   +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