Results 131 to 140 of about 144,949 (239)

Formation of Spiral Galaxies [PDF]

open access: yesInternational 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

Grand Design versus Multiarmed Spiral Galaxies: Dependence on Galaxy Structure

open access: yesThe Astronomical Journal
We developed an algorithm to use Galaxy Zoo 3D spiral arm masks produced by citizen scientist volunteers to semiautomatically classify spiral galaxies as either multiarmed or grand design spirals. Our final sample consists of 299 multiarmed and 245 grand
Beverly J. Smith   +3 more
doaj   +1 more source

Forces Attributed to Dark Matter May Originate from Entangled Particles as Seen in the Shape Of Galaxies Formed by Grbs

open access: yesInternational Journal of Engineering and Management Sciences, 2018
Recently, it has been suggested that entangled particles may be connected by a wormhole. If that is right, what is the distance between them we have to take into account when applying Newton's law of universal gravitation to these particles?
Sándor Buglyó
doaj   +1 more source

A Model of a Spiral Galaxy [PDF]

open access: bronze, 1951
G. C. Mevittie, C. Payne-Gaposchkin
openalex   +1 more source

Outskirts of spiral galaxies [PDF]

open access: yesProceedings 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

Radio Jet Feedback on the Inner Disk of Virgo Spiral Galaxy Messier 58

open access: yesThe Astrophysical Journal
Spitzer spectral maps reveal a disk of highly luminous, warm (>150 K) H _2 in the center of the massive spiral galaxy Messier 58, which hosts a radio-loud active galactic nucleus (AGN). The inner 2.6 kpc of the galaxy appears to be overrun by shocks from
Patrick M. Ogle   +11 more
doaj   +1 more source

Modeling the Radial Color Profile of M31

open access: yesOpen Astronomy, 2003
We present a preliminary study of a fragment of the radial color profile of the spiral galaxy M 31 in terms of 2-D model accounting for internal extinction in the disk. The two stellar population disk model was assumed.
Semionov D.   +2 more
doaj   +1 more source

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