Results 31 to 40 of about 417,027 (232)
Spiral morphology in an intensely star-forming disk galaxy more than 12 billion years ago [PDF]
Science, 2021 Spiral features in the early Universe The early assembly of galaxies is thought to have produced disturbed and asymmetric objects. Morphological features seen in nearby galaxies, such as stellar disks, bulges, and spiral arms, require time to form and ...
T. Tsukui, S. Iguchi
semanticscholar +1 more source
Radio AGN in spiral galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 Radio AGN in the nearby Universe are more likely to be found in galaxies with early-type morphology, the detection rate in spiral or late-type galaxies (LTGs) being around an order of magnitude lower. We combine the mJy Imaging VLBA Exploration at 20 cm (mJIVE-20) survey with the Sloan Digital Sky Survey, to study the relatively rare population of AGN ...
Kaviraj, Sugata +3 more
openaire +4 more sources
The profiles of bars in spiral galaxies
Monthly Notices of the Royal Astronomical Society, 2023 ABSTRACT We present an analysis of major-axis surface-brightness profiles of bars in a volume-limited sample of 182 barred spiral galaxies, using Spitzer 3.6 $\mu$m images. Unlike most previous studies, we use the entire bar profile, and we classify profiles into four categories.
Peter Erwin +2 more
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The Global Schmidt law in star forming galaxies [PDF]
, 1997 Measurements of Hα, H I, and CO distributions in 61 normal spiral galaxies are combined with published far-infrared and CO observations of 36 infrared-selected starburst galaxies, in order to study the form of the global star formation law over the full ...
J. Kennicutt, J. Kennicutt
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Kinematically lopsided spiral galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 1999 6 pages, accepted for ...
T. S. van Albada +3 more
openaire +5 more sources
CHARACTERISTICS OF SPIRAL ARMS IN LATE-TYPE GALAXIES [PDF]
, 2014 We have measured the positions of large numbers of H ii regions in four nearly face-on, late-type, spiral galaxies: NGC 628 (M74), NGC 1232, NGC 3184, and NGC 5194 (M51).
Z. N. Honig, M. Reid
semanticscholar +1 more source
Symposium - International Astronomical Union, 1970 We point out some properties of barred spiral galaxies which are important for the theory of their formation and spiral structure, and describe some theoretical work on the dynamics of these systems.
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The optical polarization of spiral galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2000 Scattering of starlight by dust, molecules and electrons in spiral galaxies will produce a modification of the direct intensity and a polarization in the observed light. We treat the case where the distribution of scatterers can be considered to be optically thin, and derive semi-analytic expressions for the resolved intensity and polarized intensity ...
Edouard Audit, John F. L. Simmons
openaire +4 more sources
SPIN ALIGNMENTS OF SPIRAL GALAXIES WITHIN THE LARGE-SCALE STRUCTURE FROM SDSS DR7 [PDF]
, 2014 Using a sample of spiral galaxies selected from the Sloan Digital Sky Survey Data Release 7 and Galaxy Zoo 2, we investigate the alignment of spin axes of spiral galaxies with their surrounding large-scale structure, which is characterized by the large ...
Youcai Zhang +8 more
semanticscholar +1 more source
THE BLACK HOLE MASS FUNCTION DERIVED FROM LOCAL SPIRAL GALAXIES [PDF]
, 2014 We present our determination of the nuclear supermassive black hole (SMBH) mass function for spiral galaxies in the local universe, established from a volume-limited sample consisting of a statistically complete collection of the brightest spiral ...
Benjamin Lee Davis +8 more
semanticscholar +1 more source