Results 21 to 30 of about 7,580 (161)
, 2023 We explore the environment of 351 grand-design and 541 flocculent spiral galaxies recently identified employing convolutional neural networks from the $17^{th}$ data release of Sloan Digital Sky Survey. We introduce a novel estimator called the Local Geometric Index to quantify the morphology of the local environment of these 892 spirals.
Suman Sarkar +2 more
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A panchromatic spatially resolved analysis of nearby galaxies – II. The main sequence – gas relation at sub-kpc scale in grand-design spirals [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT In this work, we analyse the connection between gas availability and the position of a region with respect to the spatially resolved main-sequence (MS) relation. Following the procedure presented in Enia et al. (2020), for a sample of five face-on, grand design spiral galaxies located on the MS we obtain estimates of stellar ...
L. Morselli +15 more
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A grand-design spiral galaxy with an ordered magnetic field at redshift 2.6 as resolved with ALMA and gravitational lensing [PDF]
Monthly Notices of the Royal Astronomical Society: LettersABSTRACT Magnetic fields play an important role in the evolution of galaxies and in shaping the dynamics of their interstellar medium. However, the formation history of magnetic fields from initial seed-fields to well-ordered systems is not clear.
W. de Roo +5 more
+5 more sources
, 2000 Two dimensional Fourier spectra of near-infrared images of galaxies provide a powerful diagnostic tool for the detection of spiral arm modulation in stellar disks. Spiral arm modulation may be understood in terms of interference patterns of outgoing and incoming density wave packets or modes.
I. Puerari +4 more
+6 more sources
Spatially resolved properties of the grand-design spiral galaxy UGC 9837: a case for high-redshift 2-D observations [PDF]
Astronomy & Astrophysics, 2011 12 pages, 9 figures, accepted for publication in A& ...
K. Viironen +10 more
openalex +7 more sources
Gas and stellar spiral arms and their offsets in the grand-design spiral galaxy M51 [PDF]
Monthly Notices of the Royal Astronomical Society, 2016 Theoretical studies on the response of interstellar gas to a gravitational potential disc with a quasi-stationary spiral arm pattern suggest that the gas experiences a sudden compression due to standing shock waves at spiral arms. This mechanism, called a galactic shock wave, predicts that gas spiral arms move from downstream to upstream of stellar ...
Fumi Egusa +3 more
openalex +4 more sources
High-resolution, 3D radiative transfer modeling : I. The grand-design spiral galaxy M51 [PDF]
Astronomy & Astrophysics, 2014 Accepted for publication in Astronomy & Astrophysics, 23 pages, 15 ...
Ilse De Looze +22 more
+11 more sources
The Astrophysical Journal, 1983 Spiral arm classifications were made for 261 low-inclination galaxies in groups listed by Huchra and Geller. The fractional occurrence of grand design spiral structure in nonbarred galaxies was found to increase from approx.0.1 to approx.0.6 and then level off as the group crossing rate or galaxy collision rate in a group increases.
Bruce G. Elmegreen, D. M. Elmegreen
openalex +3 more sources
A panchromatic spatially resolved analysis of nearby galaxies – I. Sub-kpc-scale main sequence in grand-design spirals [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT We analyse the spatially resolved relation between stellar mass (M⋆) and star formation rate (SFR) in disc galaxies (i.e. the main sequence, MS). The studied sample includes eight nearby face-on grand-design spirals, e.g. the descendant of high-redshift, rotationally supported star-forming galaxies.
A Enia +11 more
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Molecules in galaxies. V - CO observations of flocculent and grand-design spirals
The Astrophysical Journal, 1987 New carbon monoxide (1-0) observations of 29 spiral galaxies are presented and combined with previously existing data for 74 galaxies in order to study the dependence of the average CO surface brightness on the spiral-arm class. The total sample shows no significant correlation between the CO surface brightness and the presence or absence of grand ...
A. A. Stark +2 more
openalex +3 more sources