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A constant dark matter halo surface density in galaxies

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A constant dark matter halo surface density in galaxies. / Donato, F.; Gentile, G.; Salucci, Paolo et al.
In: Monthly Notices of the Royal Astronomical Society, Vol. 397, No. 3, 11.08.2009, p. 1169-1176.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Donato, F, Gentile, G, Salucci, P, Martins, CF, Wilkinson, MI, Gilmore, G, Grebel, EK, Koch, A & Wyse, R 2009, 'A constant dark matter halo surface density in galaxies', Monthly Notices of the Royal Astronomical Society, vol. 397, no. 3, pp. 1169-1176. https://doi.org/10.1111/j.1365-2966.2009.15004.x

APA

Donato, F., Gentile, G., Salucci, P., Martins, C. F., Wilkinson, M. I., Gilmore, G., Grebel, E. K., Koch, A., & Wyse, R. (2009). A constant dark matter halo surface density in galaxies. Monthly Notices of the Royal Astronomical Society, 397(3), 1169-1176. https://doi.org/10.1111/j.1365-2966.2009.15004.x

Vancouver

Donato F, Gentile G, Salucci P, Martins CF, Wilkinson MI, Gilmore G et al. A constant dark matter halo surface density in galaxies. Monthly Notices of the Royal Astronomical Society. 2009 Aug 11;397(3):1169-1176. doi: 10.1111/j.1365-2966.2009.15004.x

Author

Donato, F. ; Gentile, G. ; Salucci, Paolo et al. / A constant dark matter halo surface density in galaxies. In: Monthly Notices of the Royal Astronomical Society. 2009 ; Vol. 397, No. 3. pp. 1169-1176.

Bibtex

@article{27cbc3a4c2d442f28c11e6323cc6b7ba,
title = "A constant dark matter halo surface density in galaxies",
abstract = "We confirm and extend the recent finding that the central surface density μ0D≡r0ρ0 of galaxy dark matter haloes, where r0 and ρ0 are the halo core radius and central density, is nearly constant and independent of galaxy luminosity. Based on the co-added rotation curves (RCs) of ∼1000 spiral galaxies, the mass models of individual dwarf irregular and spiral galaxies of late and early types with high-quality RCs, and the galaxy–galaxy weak-lensing signals from a sample of spiral and elliptical galaxies, we find that log μ0D= 2.15 ± 0.2 in units of log(M⊙ pc−2). We also show that the observed kinematics of Local Group dwarf spheroidal galaxies are consistent with this value. Our results are obtained for galactic systems spanning over 14 mag, belonging to different Hubble types and whose mass profiles have been determined by several independent methods. In the same objects, the approximate constancy of μ0D is in sharp contrast to the systematical variations, by several orders of magnitude, of galaxy properties, including ρ0 and central stellar surface density.",
author = "F. Donato and G. Gentile and Paolo Salucci and Martins, {Christiane Frigerio} and Wilkinson, {M. I.} and G. Gilmore and E.K. Grebel and Andreas Koch and R. Wyse",
year = "2009",
month = aug,
day = "11",
doi = "10.1111/j.1365-2966.2009.15004.x",
language = "English",
volume = "397",
pages = "1169--1176",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "OXFORD UNIV PRESS",
number = "3",

}

RIS

TY - JOUR

T1 - A constant dark matter halo surface density in galaxies

AU - Donato, F.

AU - Gentile, G.

AU - Salucci, Paolo

AU - Martins, Christiane Frigerio

AU - Wilkinson, M. I.

AU - Gilmore, G.

AU - Grebel, E.K.

AU - Koch, Andreas

AU - Wyse, R.

PY - 2009/8/11

Y1 - 2009/8/11

N2 - We confirm and extend the recent finding that the central surface density μ0D≡r0ρ0 of galaxy dark matter haloes, where r0 and ρ0 are the halo core radius and central density, is nearly constant and independent of galaxy luminosity. Based on the co-added rotation curves (RCs) of ∼1000 spiral galaxies, the mass models of individual dwarf irregular and spiral galaxies of late and early types with high-quality RCs, and the galaxy–galaxy weak-lensing signals from a sample of spiral and elliptical galaxies, we find that log μ0D= 2.15 ± 0.2 in units of log(M⊙ pc−2). We also show that the observed kinematics of Local Group dwarf spheroidal galaxies are consistent with this value. Our results are obtained for galactic systems spanning over 14 mag, belonging to different Hubble types and whose mass profiles have been determined by several independent methods. In the same objects, the approximate constancy of μ0D is in sharp contrast to the systematical variations, by several orders of magnitude, of galaxy properties, including ρ0 and central stellar surface density.

AB - We confirm and extend the recent finding that the central surface density μ0D≡r0ρ0 of galaxy dark matter haloes, where r0 and ρ0 are the halo core radius and central density, is nearly constant and independent of galaxy luminosity. Based on the co-added rotation curves (RCs) of ∼1000 spiral galaxies, the mass models of individual dwarf irregular and spiral galaxies of late and early types with high-quality RCs, and the galaxy–galaxy weak-lensing signals from a sample of spiral and elliptical galaxies, we find that log μ0D= 2.15 ± 0.2 in units of log(M⊙ pc−2). We also show that the observed kinematics of Local Group dwarf spheroidal galaxies are consistent with this value. Our results are obtained for galactic systems spanning over 14 mag, belonging to different Hubble types and whose mass profiles have been determined by several independent methods. In the same objects, the approximate constancy of μ0D is in sharp contrast to the systematical variations, by several orders of magnitude, of galaxy properties, including ρ0 and central stellar surface density.

U2 - 10.1111/j.1365-2966.2009.15004.x

DO - 10.1111/j.1365-2966.2009.15004.x

M3 - Journal article

VL - 397

SP - 1169

EP - 1176

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 3

ER -