Universality of galactic surface densities within one dark halo scale-length - INSPIRE

DataBETA

Universality of galactic surface densities within one dark halo scale-length

Sep, 2009

22 pages

Published in:

Nature 461 (2009) 627

e-Print:

0909.5203 [astro-ph.CO]

DOI:

10.1038/nature08437

View in:

ADS Abstract Service

reference search133 citations

Citations per year

Abstract: (arXiv)

It was recently discovered that the mean dark matter surface density within one dark halo scale length - the radius within which the volume density profile of dark matter remains approximately flat - is constant across a wide range of galaxies. This scaling relation holds for galaxies spanning a luminosity range of 14 magnitudes and the whole Hubble sequence. Here we report that the luminous matter surface density is also constant within one scale length of the dark halo. This means that the gravitational acceleration generated by the luminous component in galaxies is always the same at this radius. Although the total luminous-to-dark matter ratio is not constant, within one halo scale length it is constant. Our finding can be interpreted as a close correlation between the enclosed surface densities of luminous and dark matter in galaxies.

Note:

Accepted as a Letter to Nature

References(16)

Figures(0)

[1]

A constant dark matter halo surface density in galaxies

F. Donato
(
- Turin U. and
- INFN, Turin
)
,
G. Gentile
(
- Brussels U., IAA and
- Gent U. Observ.
)
,
P. Salucci
(
- SISSA, Trieste
)
,
C.Frigerio Martins
(
- ABC Federal U.
)
,
M.I. Wilkinson
(
- Leicester U.
)

et al.

- Mon.Not.Roy.Astron.Soc. 397 (2009) 1169-1176
•
e-Print:
- 0904.4054
•
DOI:
- 10.1111/j.1365-2966.2009.15004.x

[2]

Scaling laws for dark matter halos in late-type and dwarf spheroidal galaxies. IAU Symp. Astron. Soc. Pacif. : 220 (2004) 377

J. Kormendy
,
K.C. Freeman

[3]

GHASP: An H-alpha kinematic survey of spiral and irregular galaxies. 5. Dark matter distribution in 36 nearby spiral galaxies

M. Spano
(
- Marseille, Lab. Astrophys.
)
,
M. Marcelin
(
- Marseille, Lab. Astrophys.
)
,
P. Amram
(
- Marseille, Lab. Astrophys.
)
,
C. Carignan
(
- Montreal U.
)
,
B. Epinat
(
- Marseille, Lab. Astrophys.
)

et al.

- Mon.Not.Roy.Astron.Soc. 383 (2008) 297-316
•
e-Print:
- 0710.1345
•
DOI:
- 10.1111/j.1365-2966.2007.12545.x

[4]

The Mass discrepancy - acceleration relation: Disk mass and the dark matter distribution

Stacy S. McGaugh
(
- Maryland U.
)

- Astrophys.J. 609 (2004) 652-666
•
e-Print:
- astro-ph/0403610
•
DOI:
- 10.1086/421338

[5]

The Structure of dark matter halos in dwarf galaxies

A. Burkert
(
- Heidelberg, Max Planck Inst.
)

- IAU Symp. 171 (1996) 175,
- Astrophys.J.Lett. 447 (1995) L25
•
e-Print:
- astro-ph/9504041
•
DOI:
- 10.1086/309560

[6]

The balance of dark and luminous mass in rotating galaxies

Stacy McGaugh
(
- Maryland U.
)

- Phys.Rev.Lett. 95 (2005) 171302
•
e-Print:
- astro-ph/0509305
•
DOI:
- 10.1103/PhysRevLett.95.171302

[7]

A Modification of the Newtonian dynamics as a possible alternative to the hidden mass hypothesis

M. Milgrom
(
- Weizmann Inst.
)

- Astrophys.J. 270 (1983) 365-370
•
DOI:
- 10.1086/161130

[8]

Universality of galactic surface densities within one dark halo scale-length

- Nature 461 (2009) 627
•
e-Print:
- 0909.5203
•
DOI:
- 10.1038/nature08437

[9]

The Universal rotation curve of spiral galaxies: 1. The Dark matter connection

Massimo Persic
(
- Trieste Observ. and
- SISSA, Trieste
)
,
Paolo Salucci
(
- SISSA, Trieste
)
,
Fulvio Stel
(
- Trieste U., Astron. Dept.
)

- Mon.Not.Roy.Astron.Soc. 281 (1996) 27
•
e-Print:
- astro-ph/9506004
•
DOI:
- 10.1093/mnras/278.1.27

[10]

MOND and the Universal Rotation Curve: similar phenomenologies

Gianfranco Gentile

- Astrophys.J. 684 (2008) 1018
•
e-Print:
- 0805.1731
•
DOI:
- 10.1086/590048

[11]

The Radial Tully-Fisher relation for spiral galaxies. 1.

Irina A. Yegorova
(
- SISSA, Trieste
)
,
Paolo Salucci
(
- SISSA, Trieste
)

- Mon.Not.Roy.Astron.Soc. 377 (2007) 507-515
•
e-Print:
- astro-ph/0612434
•
DOI:
- 10.1111/j.1365-2966.2007.11637.x

[12]

The Tully-Fisher relation for low surface brightness galaxies - Implications for galaxy evolution

- Mon.Not.Roy.Astron.Soc. 273 (1995) L35
•
e-Print:
- astro-ph/9501102
•
DOI:
- 10.1093/mnras/273.1.L35

[13]

MOND predictions of halo phenomenology in disc galaxies

- Mon.Not.Roy.Astron.Soc. 357 (2005) 45-48
•
e-Print:
- astro-ph/0406487
•
DOI:
- 10.1111/j.1365-2966.2004.08578.x

[14]

NGC 3741: Dark halo profile from the most extended rotation curve

Gianfranco Gentile
(
- New Mexico U.
)
,
Paolo Salucci
(
- SISSA, Trieste
)
,
Uli Klein
(
- Argelander Inst. Astron.
)
,
Gian Luigi Granato
(
- Padua Observ.
)

- Mon.Not.Roy.Astron.Soc. 375 (2007) 199-212
•
e-Print:
- astro-ph/0611355
•
DOI:
- 10.1111/j.1365-2966.2006.11283.x

[15]

The dwarf galaxy DDO 47 as a dark matter laboratory: testing cusps hiding in triaxial halos

Gianfranco Gentile
(
- SISSA, Trieste
)
,
A. Burkert
(
- Munich U.
)
,
P. Salucci
(
- SISSA, Trieste
)
,
U. Klein
(
- Argelander Inst. Astron.
)
,
F. Walter
(
- Heidelberg, Max Planck Inst. Astron.
)

- Astrophys.J.Lett. 634 (2005) L145-L148
•
e-Print:
- astro-ph/0506538
•
DOI:
- 10.1086/498939

[16]

High-Resolution Rotation Curves and Galaxy Mass Models from THINGS

et al.

- Astron.J. 136 (2008) 2648-2719
•
e-Print:
- 0810.2100
•
DOI:
- 10.1088/0004-6256/136/6/2648