Rotation curves of luminous spiral galaxies

Yegorova, I.; Babić, Ana; Salucci, Paolo; Spekkens, Kristine; Pizzella, A.

doi:10.1002/asna.201111582

Cited by 13 publications

(16 citation statements)

References 19 publications

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“…The overall fits are reasonably good, albeit for some high-luminosity bins the shape of the outer RCs is not very well constrained and this causes large uncertainties on the estimatedR c . In these respects, the sample by Yegorova et al (2011) provides the best constraints for high-luminosity disks, suggesting rather flat shapes beyond R opt . This is also confirmed from recent, highresolution radio observations of a few RCs out to 3 R opt by Martinsson et al (2016).…”

Section: Modeling Of Stacked Rotation Curvesmentioning

confidence: 94%

“…As a consequence, the theoretical interpretation of the R d − V opt relationship appears to be robust against variation in the DM halo profile; this is very encouraging in view of the future exploitation of the relationship for cosmological studies. Persic et al (1996;squares), Catinella et al (2006;circles) and Yegorova et al (2011;stars). In both panels the solid line is the analytical rendition (with the shaded area illustrating the associated 1σ uncertainty) in terms of Eq.…”

Section: Dm Halo Profilesmentioning

confidence: 99%

“…-Same as previous figure for the stacked RCs fromCatinella et al (2006) in 10 I−band magnitude bins (average value M I as labeled) and for the high-luminosity disks fromYegorova et al (2011). Linestyles as in previousFigure.…”

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confidence: 98%

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Precision Scaling Relations for Disk Galaxies in the Local Universe

Lapi

Salucci

Danese

2018

ApJ

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124

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We build templates of rotation curves as a function of the I−band luminosity via the mass modeling (by the sum of a thin exponential disk and a cored halo profile) of suitably normalized, stacked data from wide samples of local spiral galaxies. We then exploit such templates to determine fundamental stellar and halo properties for a sample of about 550 local disk-dominated galaxies with high-quality measurements of the optical radius R opt and of the corresponding rotation velocity V opt . Specifically, we determine the stellar M ⋆ and halo M H masses, the halo size R H and velocity scale V H , and the specific angular momenta of the stellar j ⋆ and dark matter j H components. We derive global scaling relationships involving such stellar and halo properties both for the individual galaxies in our sample and for their mean within bins; the latter are found to be in pleasing agreement with previous determinations by independent methods (e.g., abundance matching techniques, weak lensing observations, and individual rotation curve modeling). Remarkably, the size of our sample and the robustness of our statistical approach allow us to attain an unprecedented level of precision over an extended range of mass and velocity scales, with 1σ dispersion around the mean relationships of less than 0.1 dex. We thus set new standard local relationships that must be reproduced by detailed physical models, that offer a basis for improving the sub-grid recipes in numerical simulations, that provide a benchmark to gauge independent observations and check for systematics, and that constitute a basic step toward the future exploitation of the spiral galaxy population as a cosmological probe.

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Section: Modeling Of Stacked Rotation Curvesmentioning

confidence: 94%

Section: Dm Halo Profilesmentioning

confidence: 99%

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Precision Scaling Relations for Disk Galaxies in the Local Universe

Lapi

Salucci

Danese

2018

ApJ

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124

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“…This kind of approach in RC studies has been used for decades, pioneered by ref. 329 and later developed in several works [330][331][332][333][334][335][336]. In Figure 16 the results of co-added and binned RCs, in comparison with local RCs are shown.…”

Section: Dark Halos and The Rcs At High Zmentioning

confidence: 99%

Einstein, Planck and Vera Rubin: Relevant Encounters Between the Cosmological and the Quantum Worlds

et al. 2021

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In Cosmology and in Fundamental Physics there is a crucial question like: where the elusive substance that we call Dark Matter is hidden in the Universe and what is it made of? that, even after 40 years from the Vera Rubin seminal discovery [1] does not have a proper answer. Actually, the more we have investigated, the more this issue has become strongly entangled with aspects that go beyond the established Quantum Physics, the Standard Model of Elementary particles and the General Relativity and related to processes like the Inflation, the accelerated expansion of the Universe and High Energy Phenomena around compact objects. Even Quantum Gravity and very exotic Dark Matter particle candidates may play a role in framing the Dark Matter mystery that seems to be accomplice of new unknown Physics. Observations and experiments have clearly indicated that the above phenomenon cannot be considered as already theoretically framed, as hoped for decades. The Special Topic to which this review belongs wants to penetrate this newly realized mystery from different angles, including that of a contamination of different fields of Physics apparently unrelated. We show with the works of this ST that this contamination is able to guide us into the required new Physics. This review wants to provide a good number of these “paths or contamination” beyond/among the three worlds above; in most of the cases, the results presented here open a direct link with the multi-scale dark matter phenomenon, enlightening some of its important aspects. Also in the remaining cases, possible interesting contacts emerges. Finally, a very complete and accurate bibliography is provided to help the reader in navigating all these issues.

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“…The former is plotted in Fig. 2 as black filled circles, with error bars that include also the variance detected object by object in the 56 RCs of [52] and the 30 of [56], i.e. of the available samples of high luminosity spiral RCs.…”

Section: The Phenomenology Of Rcs Of Spiralsmentioning

confidence: 99%

Constraints on interacting Dark Energy models from galaxy rotation curves

Baldi

Salucci

2012

J. Cosmol. Astropart. Phys.

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Abstract. Interacting Dark Energy models have been introduced as a possible alternative to the standard ΛCDM concordance cosmological scenario in order to ease the fine-tuning problems of the cosmological constant. However, the interaction of the Dark Energy field with other massive particles in the universe induces also an effective modification of structure formation processes, leading to a different dynamical behavior of density perturbations with respect to the standard scenario. In particular, high-resolution N-body simulations have recently shown that also the structural properties of highly nonlinear objects, as e.g. their average concentration at a given mass, could be significantly modified in the presence of an interaction between Dark Energy and Dark Matter. While a constant interaction strength leads to less concentrated density profiles, a steep growth in time of the coupling function has been shown to determine a large increase of halo concentrations over a wide range of masses, including the typical halos hosting luminous spiral galaxies. This determines a substantial worsening of the "cusp-core" tension arising in the standard ΛCDM model and provides a direct way to constrain the form of the Dark Energy interaction. In the present paper we make use of the outcomes of some high-resolution N-body simulations of a specific class of interacting Dark Energy models to compare the predicted rotation curves of luminous spiral galaxies forming in these cosmologies against real observational data. Our results show how some specific interacting Dark Energy scenarios featuring a steep growth in time of the coupling function -which are virtually indistinguishable from ΛCDM in the background -cannot fit the observed rotation curves of luminous spiral galaxies and can therefore be ruled out only on the basis of dynamical properties of small-scale structures. Our study is a pilot investigation of the effects of a Dark Energy interaction at small scales, and demonstrates how the dynamical properties of visible galaxies can in some cases provide direct constraints on the nature of Dark Energy.

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Rotation curves of luminous spiral galaxies

Cited by 13 publications

References 19 publications

Precision Scaling Relations for Disk Galaxies in the Local Universe

Precision Scaling Relations for Disk Galaxies in the Local Universe

Einstein, Planck and Vera Rubin: Relevant Encounters Between the Cosmological and the Quantum Worlds

Constraints on interacting Dark Energy models from galaxy rotation curves

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