2012ApJ...757L..28R

Query : 2012ApJ...757L..28R

2012ApJ...757L..28R - Astrophys. J., 757, L28 (2012/October-1)

Detecting triaxiality in the galactic dark matter halo through stellar kinematics.

ROJAS-NINO A., VALENZUELA O., PICHARDO B. and AGUILAR L.A.

Abstract (from CDS):

Assuming the dark matter halo of the Milky Way to be a non-spherical potential (i.e., triaxial, prolate, oblate), we show how the assembling process of the Milky Way halo may have left long-lasting stellar halo kinematic fossils due to the shape of the dark matter halo. In contrast with tidal streams, which are associated with recent satellite accretion events, these stellar kinematic groups will typically show inhomogeneous chemical and stellar population properties. However, they may be dominated by a single accretion event for certain mass assembling histories. If the detection of these peculiar kinematic stellar groups were confirmed, they would be the smoking gun for the predicted triaxiality of dark halos in cosmological galaxy formation scenarios.

Abstract Copyright: ∼

Journal keyword(s): Galaxy: halo - Galaxy: kinematics and dynamics - Galaxy: structure

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME Sagittarius Stream St* 02 22 +00.0           ~ 1001 0

Query : 2012ApJ...757L..28R

Basic data :
NAME Sagittarius Stream -- Stellar Stream
Other object types: otypes_help 		St* (), As* ()
ICRS coord. (ep=J2000) : 		02 22 00.0 +00 00 00 [ ] E ~
FK4 coord. (ep=B1950 eq=1950) : 		02 19 26.3 -00 13 39 [ ]
Gal coord. (ep=J2000) : 		165.3812 -55.2256 [ ]
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 1
: 265780 		: 44 Display criteria :

Identifiers (6) :
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NAME Sagittarius South Stream NAME Sgr Stream NAME Sgr Dwarf Tidal Stream
NAME Sagittarius Stream NAME SDG Tidal Stream NAME Sgr Tidal Stream

References (1001 between 1850 and 2026) (Total 1001)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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