Thin disk of co-rotating dwarfs: A fingerprint of dissipative (mirror) dark matter?

Recent observations indicate that about half of the dwarf satellite galaxies around M31 orbit in a thin plane approximately aligned with the Milky Way. It has been argued that this observation along with several other features can be explained if these dwarf satellite galaxies originated as tidal dwarf galaxies formed during an ancient merger event. However if dark matter is collisionless then tidal dwarf galaxies should be free of dark matter - a condition that is difficult to reconcile with observations indicating that dwarf satellite galaxies are dark matter dominated. We argue that dissipative dark matter candidates, such as mirror dark matter, offer a simple solution to this puzzle.

Note:

5 pages

Hidden sector
Dark matter
white dwarf
dark matter
galaxy
satellite

References(38)

Figures(0)

[1]

A Vast Thin Plane of Co-rotating Dwarf Galaxies Orbiting the Andromeda Galaxy

et al.

- Nature 493 (2013) 62-65
•
e-Print:
- 1301.0446
•
DOI:
- 10.1038/nature11717

[2]

The VPOS: a vast polar structure of satellite galaxies, globular clusters and streams around the Milky Way

- Mon.Not.Roy.Astron.Soc. 423 (2012) 1109
•
e-Print:
- 1204.5176
•
DOI:
- 10.1111/j.1365-2966.2012.20937.x

[3]

Andromeda's extended disk of dwarfs

R.B. Tully

- Nature 493 (2013) 31

[4]

Multiple Galaxies

F. Zwicky

- Ergeb.Exakt.Naturwiss. 29 (1956) 344

[5]

Making Counter-Orbiting Tidal Debris: The Origin of the Milky Way Disc of Satellites

- Astron.Astrophys. 532 (2011) A118
•
e-Print:
- 1106.2804
•
DOI:
- 10.1051/0004-6361/201015021

[6]

Does M31 result from an ancient major merger?

et al.

- Astrophys.J. 725 (2010) 542-555
•
e-Print:
- 1010.0679
•
DOI:
- 10.1088/0004-637X/725/1/542

[7]

Does the dwarf galaxy system of the Milky Way originate from Andromeda?

- Mon.Not.Roy.Astron.Soc. 427 (2012) 1769
•
e-Print:
- 1209.4077
•
DOI:
- 10.1111/j.1365-2966.2012.22067.x

[8]

The Three-Dimensional Structure of the M31 Satellite System: Strong Evidence for an Inhomogeneous Distribution of Satellites

et al.

- Astrophys.J. 766 (2013) 120
•
e-Print:
- 1301.7131
•
DOI:
- 10.1088/0004-637X/766/2/120

[9]

The vast thin plane of M31 co-rotating dwarfs: an additional fossil signature of the M31 merger and of its considerable impact in the whole Local Group

François Hammer
(
- Meudon Observ.
)
,
Yanbin Yang
(
- Beijing Observ. and
- Meudon Observ.
)
,
Sylvain Fouquet
(
- Meudon Observ.
)
,
Marcel S. Pawlowski
(
- Argelander Inst. Astron.
)
,
Pavel Kroupa
(
- Argelander Inst. Astron.
)

et al.

- Mon.Not.Roy.Astron.Soc. 431 (2013) 3543
•
e-Print:
- 1303.1817
•
DOI:
- 10.1093/mnras/stt435

[10]

Local-Group tests of dark-matter Concordance Cosmology: Towards a new paradigm for structure formation?

P. Kroupa
(
- Argelander Inst. Astron.
)
,
B. Famaey
(
- Argelander Inst. Astron. and
- Strasbourg Observ.
)
,
K.S. de Boer
(
- Argelander Inst. Astron.
)
,
J. Dabringhausen
(
- Argelander Inst. Astron.
)
,
M.S. Pawlowski
(
- Argelander Inst. Astron.
)

et al.

- Astron.Astrophys. 523 (2010) A32
•
e-Print:
- 1006.1647
•
DOI:
- 10.1051/0004-6361/201014892

[11]

Missing Mass in Collisional Debris from Galaxies

et al.

- Science 316 (2007) 1166
•
e-Print:
- 0705.1356
•
DOI:
- 10.1126/science.1142114

[12]

Dark Matter in the Milky Way's Dwarf Spheroidal Satellites

Matthew G. Walker
(
- Harvard-Smithsonian Ctr. Astrophys.
)

e-Print:
- 1205.0311
•
DOI:
- 10.1007/978-94-007-5612-0_20

[13]

Dwarf-spheroidal satellites: Are they of tidal origin?

- Mon.Not.Roy.Astron.Soc. 376 (2007) 387-392
•
e-Print:
- astro-ph/0701289
•
DOI:
- 10.1111/j.1365-2966.2007.11438.x

[14]

The Outer Limits of the M31 System: Kinematics of the Dwarf Galaxy Satellites And XXVIII and And XXIX

- Astrophys.J. 768 (2013) 50
•
e-Print:
- 1302.0848
•
DOI:
- 10.1088/0004-637X/768/1/50

[15]

Modified Newtonian Dynamics (MOND): Observational Phenomenology and Relativistic Extensions

Benoit Famaey
(
- Argelander Inst. Astron. and
- Strasbourg Observ.
)
,
Stacy McGaugh
(
- Case Western Reserve U. and
- Maryland U.
)

- Living Rev.Rel. 15 (2012) 10
•
e-Print:
- 1112.3960
•
DOI:
- 10.12942/lrr-2012-10

[16]

Do dwarf galaxies form in tidal tails?

Markus Wetzstein
(
- Munich U. Observ.
)
,
T. Naab
(
- Munich U. Observ.
)
,
A. Burkert
(
- Munich U. Observ.
)

- Mon.Not.Roy.Astron.Soc. 375 (2007) 805-820
•
e-Print:
- astro-ph/0510821
•
DOI:
- 10.1111/j.1365-2966.2006.11360.x

[17]

A Model with fundamental improper space-time symmetries

- Phys.Lett.B 272 (1991) 67-70
•
DOI:
- 10.1016/0370-2693(91)91013-L

[18]

Question of Parity Conservation in Weak Interactions

T.D. Lee
(
- Columbia U.
)
,
Chen-Ning Yang
(
- Brookhaven
)

- Phys.Rev. 104 (1956) 254-258,
- Erratum - ibid. 106 (1957) 1371,
- Also in *Yang, C.N.: Selected Papers 1945-1980*, 189-193
•
DOI:
- 10.1103/PhysRev.104.254