Showing 1 - 14 results of 14 for search '"spiral galaxy"', query time: 0.06s Refine Results
  1. 1

    The Study of Nebular Emission on Nearby Spiral Galaxies in the IFU Era by Fernando Fabián Rosales-Ortega

    Published 2013-01-01
    “…Here I review some highlights of our current studies employing this technique: (1) the case study of NGC 628, the largest galaxy ever sampled with an IFU; (2) a statistical approach to the abundance gradients of spiral galaxies, which indicates a universal radial gradient for oxygen abundance; and (3) the discovery of a new scaling relation of HII regions in spiral galaxies, the local mass-metallicity relation of star-forming galaxies. …”
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  2. 2

    Analysis of the Internal Radial Gradient of Chemical Abundances in Spiral Galaxies from CALIFA by A. F. S. Cardoso, O. Cavichia, M. Mollá, L. Sánchez-Menguiano

    Published 2025-01-01
    “…This study analyzes oxygen abundance gradients in spiral galaxies based on observations from the Calar Alto Legacy Integral Field Area survey. …”
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    Analysis of ∼106 Spiral Galaxies from Four Telescopes Shows Large-Scale Patterns of Asymmetry in Galaxy Spin Directions by Lior Shamir

    Published 2022-01-01
    “…This study uses large datasets collected by four different robotic telescopes to profile the large-scale distribution of the spin directions of spiral galaxies. These datasets cover the Northern and Southern hemispheres, in addition to data acquired from space by the Hubble Space Telescope. …”
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    Overview of the Near-IR S0 Galaxy Survey (NIRS0S) by E. Laurikainen, H. Salo, R. Buta, J. H. Knapen

    Published 2011-01-01
    “…As a comparison sample, a similar sized spiral galaxy sample with similar image quality was used. …”
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  11. 11

    Modified Newtonian Dynamics: A Falsification of Cold Dark Matter by R. H. Sanders

    Published 2009-01-01
    “…This hypothesis, suggested by Milgrom, has been successful in explaining systematic properties of spiral and elliptical galaxies and predicting in detail the observed rotation curves of spiral galaxies with only one additional parameter—a critical acceleration which is on the order of the cosmologically interesting value of 𝑐𝐻𝑜. …”
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  12. 12

    Astronomical Signatures of Dark Matter by Paul Gorenstein, Wallace Tucker

    Published 2014-01-01
    “…They are very high velocities of individual galaxies within clusters of galaxies, higher than expected rotation rates of stars in the outer regions of galaxies, 21 cm line studies indicative of increasing mass to light ratios with radius in the halos of spiral galaxies, hot gaseous X-ray emitting halos around many elliptical galaxies, and clusters of galaxies requiring a much larger component of unseen mass for the hot gas to be bound. …”
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  13. 13

    Are Nuclear Star Clusters the Precursors of Massive Black Holes? by Nadine Neumayer, C. Jakob Walcher

    Published 2012-01-01
    “…We present new upper limits for black hole masses in extremely late type spiral galaxies. We confirm that this class of galaxies has black holes with masses less than 106M⊙, if any. …”
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  14. 14

    HCG 57: Evidence for Shock-heated Intergalactic Gas from X-Rays and Optical Emission Line Spectroscopy by Ewan O’Sullivan, P. N. Appleton, B. A. Joshi, Lauranne Lanz, Katherine Alatalo, Jan M. Vrtilek, Andreas Zezas, Laurence P. David

    Published 2025-01-01
    “…We present Chandra and XMM-Newton X-ray observations of the compact group HCG 57, and optical integral field spectroscopy of the interacting galaxy pair HCG 57A/D. These two spiral galaxies recently suffered an off-axis collision with HCG 57D passing through the disk of A. …”
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