TY - JOUR
T1 - A dearth of dark matter in ordinary elliptical galaxies
AU - Romanowsky, Aaron J.
AU - Douglas, Nigel G.
AU - Arnaboldi, Magda
AU - Kuijken, Konrad
AU - Merrifield, Michael R.
AU - Napolitano, Nicola R.
AU - Capaccioli, Massimo
AU - Freeman, Kenneth C.
PY - 2003/9/19
Y1 - 2003/9/19
N2 - The kinematics of the outer parts of three intermediate-luminosity elliptical galaxies were studied with the Planetary Nebula Spectrograph. The galaxies' velocity-dispersion profiles were found to decline with the radius, and dynamical modeling of the data indicates the presence of little if any dark matter in these galaxies' halos. This unexpected result conflicts with findings in other galaxy types and poses a challenge to current galaxy formation theories.
AB - The kinematics of the outer parts of three intermediate-luminosity elliptical galaxies were studied with the Planetary Nebula Spectrograph. The galaxies' velocity-dispersion profiles were found to decline with the radius, and dynamical modeling of the data indicates the presence of little if any dark matter in these galaxies' halos. This unexpected result conflicts with findings in other galaxy types and poses a challenge to current galaxy formation theories.
UR - http://www.scopus.com/inward/record.url?scp=0141655019&partnerID=8YFLogxK
U2 - 10.1126/science.1087441
DO - 10.1126/science.1087441
M3 - Article
SN - 0036-8075
VL - 301
SP - 1696
EP - 1698
JO - Science
JF - Science
IS - 5640
ER -