A Limit on the Cosmological Mass Density and Power Spectrum from the Rotation Curves of Low Surface Brightness Galaxies

2003 ◽  
Vol 584 (2) ◽  
pp. 566-576 ◽  
Author(s):  
Stacy S. McGaugh ◽  
Michael K. Barker ◽  
W. J. G. de Blok
Keyword(s):  
Power Spectrum ◽  
Surface Brightness ◽  
Mass Density ◽  
Rotation Curves ◽  
Low Surface Brightness ◽  
Low Surface Brightness Galaxies

High-Resolution Rotation Curves of Low Surface Brightness Galaxies. I. Data

2001 ◽  
Vol 122 (5) ◽  
pp. 2381-2395 ◽  
Author(s):  
Stacy S. McGaugh ◽  
Vera C. Rubin ◽  
W. J. G. de Blok
Keyword(s):  
High Resolution ◽  
Surface Brightness ◽  
Rotation Curves ◽  
Low Surface Brightness ◽  
Low Surface Brightness Galaxies

scholarly journals Constraints on the Structure of Dark Matter Halos from the Rotation Curves of Low Surface Brightness Galaxies

2000 ◽  
Vol 119 (4) ◽  
pp. 1579-1591 ◽  
Author(s):  
Frank C. van den Bosch ◽  
Brant E. Robertson ◽  
Julianne J. Dalcanton ◽  
W. J. G. de Blok
Keyword(s):  
Dark Matter ◽  
Surface Brightness ◽  
Dark Matter Halos ◽  
Rotation Curves ◽  
Low Surface Brightness ◽  
Low Surface Brightness Galaxies

High-Resolution Rotation Curves of Low Surface Brightness Galaxies. II. Mass Models

2001 ◽  
Vol 122 (5) ◽  
pp. 2396-2427 ◽  
Author(s):  
W. J. G. de Blok ◽  
Stacy S. McGaugh ◽  
Vera C. Rubin
Keyword(s):  
High Resolution ◽  
Surface Brightness ◽  
Rotation Curves ◽  
Low Surface Brightness ◽  
Low Surface Brightness Galaxies

Mass Density Profiles of Low Surface Brightness Galaxies

2001 ◽  
Vol 552 (1) ◽  
pp. L23-L26 ◽  
Author(s):  
W. J. G. de Blok ◽  
Stacy S. McGaugh ◽  
Albert Bosma ◽  
Vera C. Rubin
Keyword(s):  
Surface Brightness ◽  
Mass Density ◽  
Density Profiles ◽  
Low Surface Brightness ◽  
Low Surface Brightness Galaxies

scholarly journals Chemical Constraints, Baryonic Mass and the Chemical Evolution of Low Surface Brightness Galaxies

1999 ◽  
Vol 171 ◽  
pp. 383-389
Author(s):  
M.G. Edmunds
Keyword(s):  
Chemical Evolution ◽  
Surface Brightness ◽  
Mass Density ◽  
Intergalactic Gas ◽  
Chemical Abundances ◽  
X Ray ◽  
Groups Of Galaxies ◽  
Low Surface Brightness ◽  
Low Surface Brightness Galaxies ◽  
Baryonic Mass

AbstractA brief review of primordial helium and deuterium abundances suggests a baryonic mass density of ΩB ≈ 0.04 – 0.045 (for Ho = 70). This mass may be dominated by intergalactic gas in clusters and groups of galaxies. The observed low chemical abundances in evolved dwarf galaxies might suggest that outflow was the origin for such gas, and we make general suggestions for the interpretation of the data from the next generation of X-ray spectroscopic satellites. The effects of both outflow and inflow on the chemical evolution of galaxies is discussed, particularly in the context of low surface brightness galaxies, and we comment on their dust content.

scholarly journals The prediction of rotation curves in gas-dominated dwarf galaxies with modified dynamics

2019 ◽  
Vol 485 (1) ◽  
pp. 513-521 ◽  
Author(s):  
R H Sanders
Keyword(s):  
Surface Density ◽  
Surface Brightness ◽  
Dark Halo ◽  
Baryonic Matter ◽  
Rotation Curves ◽  
Stellar Disc ◽  
Modified Newtonian Dynamics ◽  
Newtonian Dynamics ◽  
Low Surface Brightness ◽  
Low Surface Brightness Galaxies

ABSTRACT I consider the observed rotation curves of 12 gas-dominated low-surface-brightness galaxies – objects in which the mass of gas ranges between 2.2 and 27 times the mass of the stellar disc (mean = 9.4). This means that, in the usual decomposition of rotation curves into those resulting from various mass components, the mass-to-light ratio of the luminous stellar disc effectively vanishes as an additional adjustable parameter. It is seen that the observed rotation curves reflect the observed structure in gas surface density distribution often in detail. This fact is difficult to comprehend in the context of the dark matter paradigm where the dark halo completely dominates the gravitational potential in the low surface density systems; however it is an expected result in the context of modified Newtonian dynamics (MOND) in which the baryonic matter is the only component. With MOND the calculated rotation curves are effectively parameter-free predictions.

scholarly journals The universal rotation curve of low surface brightness galaxies – IV. The interrelation between dark and luminous matter

2019 ◽  
Vol 490 (4) ◽  
pp. 5451-5477 ◽  
Author(s):  
Chiara Di Paolo ◽  
Paolo Salucci ◽  
Adnan Erkurt
Keyword(s):  
Dark Matter ◽  
Surface Brightness ◽  
Rotation Curve ◽  
High Surface ◽  
Dark Matter Halo ◽  
Rotation Curves ◽  
Central Surface ◽  
Low Surface Brightness ◽  
Low Surface Brightness Galaxies ◽  
Lsb Galaxies

ABSTRACT We investigate the properties of the baryonic and the dark matter components in low surface brightness (LSB) disc galaxies, with central surface brightness in the B band $\mu _0 \ge 23 \, \mathrm{mag \, arcsec}^{-2}$. The sample is composed of 72 objects, whose rotation curves show an orderly trend reflecting the idea of a universal rotation curve (URC) similar to that found in the local high surface brightness (HSB) spirals in previous works. This curve relies on the mass modelling of the co-added rotation curves, involving the contribution from an exponential stellar disc and a Burkert cored dark matter halo. We find that the dark matter is dominant especially within the smallest and less luminous LSB galaxies. Dark matter haloes have a central surface density $\Sigma _0 \sim 100 \, \mathrm{M}_{\odot } \, \mathrm{pc}^{-2}$, similar to galaxies of different Hubble types and luminosities. We find various scaling relations among the LSBs structural properties which turn out to be similar but not identical to what has been found in HSB spirals. In addition, the investigation of these objects calls for the introduction of a new luminous parameter, the stellar compactness C* (analogously to a recent work by Karukes & Salucci), alongside the optical radius and the optical velocity in order to reproduce the URC. Furthermore, a mysterious entanglement between the properties of the luminous and the dark matter emerges.

scholarly journals The Central Dynamics of Blue Low Surface Brightness Galaxies

2004 ◽  
Vol 220 ◽  
pp. 335-336
Author(s):  
Erik Zackrisson ◽  
Nils Bergvall
Keyword(s):  
Dark Matter ◽  
Density Profile ◽  
Surface Brightness ◽  
Cold Dark Matter ◽  
Central Density ◽  
Disk Galaxies ◽  
Rotation Curves ◽  
Central Surface ◽  
Low Surface Brightness ◽  
Low Surface Brightness Galaxies

We use optical, long-slit rotation curves to derive the slope of the central density profile in three blue disk galaxies with very faint central surface brightness values. We find the result to be in conflict with current cold dark matter predictions and to lend further support for pseudo-isothermal spheres as superior models for the dark halos of galaxies.

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