J/ApJ/636/721 Galaxy rotation curves (Brownstein+, 2006)
Galaxy rotation curves without nonbaryonic dark matter.
Brownstein J.R., Moffat J.W.
<Astrophys. J., 636, 721-741 (2006)>
=2006ApJ...636..721B 2006ApJ...636..721B
ADC_Keywords: Galaxies, rotation ; Models
Keywords: dark matter - galaxies: fundamental parameters - galaxies: general -
galaxies: kinematics and dynamics
Abstract:
We apply the modified acceleration law obtained from Einstein gravity
coupled to a massive skew-symmetric field Fµνλ to the
problem of explaining galaxy rotation curves without exotic dark
matter. Our sample of galaxies includes low surface brightness (LSB)
and high surface brightness (HSB) galaxies and an elliptical galaxy.
In those cases for which photometric data are available, a best fit
via the single parameter (M/L)stars to the luminosity of the gaseous
(HI plus He) and luminous stellar disks is obtained. In addition, a
best fit to the rotation curves of galaxies is obtained in terms of a
parametric mass distribution (independent of luminosity observations)
- a two-parameter fit to the total galactic mass (or mass-to-light
ratio M/L) and a core radius associated with a model of the galaxy
cores - using a nonlinear least-squares fitting routine including
estimated errors. The fits are compared to those obtained using
Milgrom's phenomenological MOND model and to the predictions of the
Newtonian/Kepler acceleration law.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 73 101 Galaxy properties of the complete sample
table3.dat 104 101 Parametric rotation curve fit results
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See also:
VII/145 : Nearby Galaxies Catalogue (NBG) (Tully 1988)
J/ApJ/598/260 : Satellites orbiting isolated galaxies (Prada+, 2003)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name Galaxy name
11- 15 A5 --- MType Morphology type
17- 19 A3 --- SBType Surface brightness type (1)
21- 26 F6.3 10+10solLum BLum ? The B band luminosity (2)
28- 33 F6.3 10+10solLum KLum ? The K band luminosity (3)
35- 38 F4.1 kpc Rout Outermost observed radial position
40- 44 F5.1 km/s Vout Observed velocity at Rout
46- 49 F4.1 km/s e_Vout ? Uncertainty (or lower limit) in Vout
51- 54 F4.1 km/s E_Vout ? Upper uncertainty limit in Vout
56 A1 --- f_Vout [a] Flag on Vout (4)
58- 61 F4.1 Mpc Dist ? Distance (5)
63- 71 F9.6 --- z ? NED redshift
73 I1 --- Ref Primary original reference (6)
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Note (1): Surface brightness type:
LSB = central surface brightness is low (µ0≳23mag/arcsec2);
HSB = central surface brightness is otherwise high.
Note (2): Taken from the original references except for Sofue
(1996ApJ...458..120S 1996ApJ...458..120S) and Romanowsky et al. (2003Sci...301.1696R 2003Sci...301.1696R)
which are taken from Tully (1988, Cat. VII/145).
Note (3): Converted from the 2MASS K-band apparent magnitude except for the
Schombert F-type galaxies, which are taken from the original
reference.
Note (4): A "a" indicates error bars were not part of the available high
resolution rotation curve data for this galaxy.
Note (5): Adopted from the original references.
Note (6): References, defined as follows:
1 = Begeman, Broeils & Sanders (1991MNRAS.249..523B 1991MNRAS.249..523B);
2 = Sanders (1996ApJ...473..117S 1996ApJ...473..117S);
3 = de Blok & McGaugh (1998ApJ...469L..89D 1998ApJ...469L..89D);
4 = Verheijen & Sancisi (2001, Cat. J/A+A/370/765);
5 = Sofue (1996ApJ...458..120S 1996ApJ...458..120S);
6 = Romanowsky (2003Sci...301.1696R 2003Sci...301.1696R).
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 28 A28 --- Group Galaxy grouping
30- 38 A9 --- Name Galaxy name
40 A1 --- f_Name [a] Flag on Name (1)
42- 46 F5.2 10+10solMass M(MSTG) MSTG predicted total galactic mass (2)
48- 51 F4.2 10+10solMass e_M(MSTG) Uncertainty in M(MSTG)
53- 56 F4.2 kpc R(MSTG) MSTG predicted core radius (2)
58- 61 F4.2 kpc e_R(MSTG) Uncertainty in R(MSTG)
63- 67 F5.1 km/s V(MSTG) MSTG predicted flat rotation velocity (2)
69- 72 F4.1 km/s e_V(MSTG) Uncertainty in V(MSTG)
74- 78 F5.2 10+10solMass M(MOND) MOND predicted galactic mass (3)
80- 83 F4.2 10+10solMass e_M(MOND) Uncertainty in M(MOND)
85- 88 F4.2 kpc R(MOND) MOND predicted core radius (3)
90- 93 F4.2 kpc e_R(MOND) Uncertainty in R(MOND)
95- 99 F5.1 km/s V(MOND) MOND predicted asymptotic velocity (3)
101-104 F4.1 km/s e_V(MOND) Uncertainty in V(MOND)
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Note (1): A "a" indicates a MOND best fit was not possible due to
<M/L>stars<0. The MOND fit shown for DDO154 neglects Mdisk,
where as all the data was used for the MSTG result.
Note (2): The metric-skew-tensor gravity (MSTG) is a generalization of
Einstein's general relativity, based on a pseudo-Riemannian metric
tensor and a skew-symmetric rank three tensor field
Fµνλ.
Note (3): MOND stands for Milgrom's modified Newtonian dynamics model.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 11-Sep-2006