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Are There Jets in Spiral Galaxies?
1983The absence in spiral galaxies of large-scale collimated jets of radio emission is still little understood. Collimated emission in elliptical galaxies in some cases exceeds by far the optical extent of the galaxy (e.g. in NGC6251). Westerbork observations of NGC4258 (van der Kruit, Oort and Mathewson, 1972) and NGC3079 (de Bruyn, 1977) have provided ...
C. Kotanyi, E. Hummel, J. van Gorkom
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Comparison of the Galaxy with External Spiral Galaxies
1987In this chapter some areas of comparative exploration in our and external galaxies are reviewed and discussed. Photometric parameters for the Galaxy are derived. The radial scalelength is 5.0 ± 0.5 kpc, and this makes our Galaxy (and M31) unusually large unless Ho = 65 ± 10 km s−1 Mpc−1. Surface photometry of external edge-on galaxies, in particular of
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Theory of Gravitons in Spiral and Dwarf Galaxy Rotation Curves
Journal of High Energy Physics Gravitation and Cosmology, 2022Firmin Oliveira
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Galaxy And Mass Assembly: Galaxy Zoo spiral arms and star formation rates
Monthly Notices of the Royal Astronomical Society, 2022Brooke Simmons +2 more
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Galaxy zoo builder: Morphological dependence of spiral galaxy pitch angle
Monthly Notices of the Royal Astronomical Society, 2021Chris Lintott +2 more
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Open clusters as spiral structure tracers in our galaxy
Astronomical and Astrophysical Transactions, 1992A V Loktin
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On the spiral structure of the Milky Way Galaxy
Astronomy Reports, 2011Yu N Efremov, Efremov Yu N
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