TY - JOUR
T1 - A new population of extended, luminous star clusters in the halo of M31
AU - Huxor, A. P.
AU - Tanvir, N. R.
AU - Irwin, M. J.
AU - Ibata, R.
AU - Collett, J. L.
AU - Ferguson, A. M.N.
AU - Bridges, T.
AU - Lewis, G. F.
PY - 2005/7/1
Y1 - 2005/7/1
N2 - We present three new clusters discovered in the halo of M31 which, although having globular-like colours and luminosities, have unusually large half-light radii, ∼30 pc. They lie at projected galactocentric distances of ≈ 15 to %35 kpc. These objects begin to fill the gap in parameter space between globular clusters and dwarf spheroidals, and are unlike any clusters found in the Milky Way, or elsewhere to date. Colour-magnitude diagrams, integrated photometric properties and derived King profile fit parameters are given, and we discuss possible origins of these clusters and their relationships to other populations.
AB - We present three new clusters discovered in the halo of M31 which, although having globular-like colours and luminosities, have unusually large half-light radii, ∼30 pc. They lie at projected galactocentric distances of ≈ 15 to %35 kpc. These objects begin to fill the gap in parameter space between globular clusters and dwarf spheroidals, and are unlike any clusters found in the Milky Way, or elsewhere to date. Colour-magnitude diagrams, integrated photometric properties and derived King profile fit parameters are given, and we discuss possible origins of these clusters and their relationships to other populations.
KW - Galaxies: individual: M31
KW - Galaxies: star clusters
UR - http://www.scopus.com/inward/record.url?scp=22144459802&partnerID=8YFLogxK
U2 - 10.1111/j.1365-2966.2005.09086.x
DO - 10.1111/j.1365-2966.2005.09086.x
M3 - Article (Academic Journal)
AN - SCOPUS:22144459802
SN - 0035-8711
VL - 360
SP - 1007
EP - 1012
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 3
ER -