A geometrical justification for spiral galaxies rotation curves
Sign Up to like & getrecommendations! Published in 2020 at "Astrophysics and Space Science"
DOI: 10.1007/s10509-020-03769-7
Abstract: In this paper, we construct dark halo models which are merely supported by geometry of space time. We concentrate on the inhomogeneous space time around some spiral galaxies whose have dark matter. After characterizing the… read more here.
Keywords: rotation curves; justification spiral; spiral galaxies; galaxies rotation ... See more keywords
Discovery and Study of Spiral Galaxies with Dark Matter in a Series of Clusters in the Northern Galactic Hemisphere
Sign Up to like & getrecommendations! Published in 2017 at "Astrophysics"
DOI: 10.1007/s10511-017-9484-7
Abstract: Data from the Merged Catalog of Galaxies (MERCG) are used to study the dynamic characteristics of spiral galaxies with absolute magnitudes M ≥ −20m.6 in the Perseus, A779, and Coma clusters and the Great Wall… read more here.
Keywords: study spiral; dark matter; spiral galaxies; discovery study ... See more keywords
Statistics on 24 spiral galaxies having different observed arm locations using different arm tracers
Sign Up to like & getrecommendations! Published in 2020 at "New Astronomy"
DOI: 10.1016/j.newast.2019.101337
Abstract: Abstract The density wave theory predicted some physical offsets among different tracers of star formation. To test this prediction, here we compiled data on 40 galaxies searched observationally for a physical offset between spiral arm… read more here.
Keywords: statistics spiral; arm tracers; spiral galaxies; spiral arm ... See more keywords
The impact of bars and interactions on optically selected AGNs in spiral galaxies
Sign Up to like & getrecommendations! Published in 2018 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/201832796
Abstract: Aims. With the aim of performing a suitable comparison of the internal process of galactic bars with respect to the external effect of interactions on driving gas toward the inner most region of the galaxies,… read more here.
Keywords: nuclear activity; spiral galaxies; bars interactions; pair systems ... See more keywords
SDSS-IV MaNGA: Excavating the fossil record of stellar populations in spiral galaxies
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa1303
Abstract: We perform a “fossil record” analysis for ≈800 low-redshift spiral galaxies, using STARLIGHT applied to integral field spectroscopic observations from the SDSS-IV MaNGA survey to obtain fully spatially-resolved high-resolution star formation histories (SFHs). From the… read more here.
Keywords: fossil record; sdss manga; stellar populations; spiral galaxies ... See more keywords
Bar rejuvenation in S0 galaxies?
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DOI: 10.1093/mnras/staa1387
Abstract: Based on the colour measurements from a multi-band, multi-component 2D decomposition's of S0 and spiral galaxies using SDSS images, we found that bars are bluer in S0 galaxies compared to the spiral galaxies. Most of… read more here.
Keywords: rejuvenation galaxies; environment; spiral galaxies; bar rejuvenation ... See more keywords
Determining the co-rotation radii of spiral galaxies using spiral arm pitch angle measurements at multiple wavelengths
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa1596
Abstract: The spiral arms spanning disc galaxies are believed to be created by density waves that propagate through galactic discs. We present a novel method of finding the co-rotation radius where the spiral arm pattern speed… read more here.
Keywords: rotation; pitch angle; rotation radii; spiral galaxies ... See more keywords
GASP XXIX – unwinding the arms of spiral galaxies via ram-pressure stripping
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa3298
Abstract: We present the first study of the effect of ram-pressure "unwinding" the spiral arms of cluster galaxies. We study 11 ram-pressure stripped galaxies from GASP (GAs Stripping Phenomena in galaxies) in which, in addition to… read more here.
Keywords: spiral galaxies; pressure stripping; ram pressure; stripped galaxies ... See more keywords
The inner mass distribution of late-type spiral galaxies from SAURON stellar kinematic maps
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DOI: 10.1093/mnras/stw2448
Abstract: We infer the central mass distributions within 0.4-1.2 disc scalelengths of 18 late-type spiral galaxies using two different dynamical modelling approaches - the asymmetric drift correction (ADC) and axisymmetric Jeans anisotropic multi-Gaussian expansion (JAM) model.… read more here.
Keywords: jam; spiral galaxies; inner mass; late type ... See more keywords
Estimating the baryonic masses of face-on spiral galaxies from stellar kinematics
Sign Up to like & getrecommendations! Published in 2017 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stx917
Abstract: The kinematic dispersions of disc stars can be used to measure the dynamic contributions of baryons to the rotation curves of spiral galaxies and hence to trace the amount and distribution of the remaining dark… read more here.
Keywords: dark matter; spiral galaxies; kinematics; estimating baryonic ... See more keywords
2MTF – VII. 2MASS Tully–Fisher survey final data release: distances for 2062 nearby spiral galaxies
Sign Up to like & getrecommendations! Published in 2019 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stz1413
Abstract: We present the final distance measurements for the 2MASS Tully-Fisher (2MTF) survey. The final 2MTF catalogue contains 2062 nearby spiral galaxies in the CMB frame velocity range of 600 < cz < 10 000 km… read more here.
Keywords: survey final; 2mass tully; 2062 nearby; spiral galaxies ... See more keywords