A spectroscopic survey of EC4, an extended cluster in Andromeda's halo

Collins, M L M; Chapman, S. C.; Irwin, M. J.; Ibata, Rodrigo A; Martin, N F; Ferguson, A. M. N.; Huxor, A; Lewis, Geraint Francis; Mackey, Alasdair; McConnachie, Alan W; Tanvir, Nial R

A spectroscopic survey of EC4, an extended cluster in Andromeda's halo

Date

2009

Authors

Collins, M L M

Chapman, S. C.

Irwin, M. J.

Ibata, Rodrigo A

Martin, N F

Ferguson, A. M. N.

Huxor, A

Lewis, Geraint Francis

Mackey, Alasdair

McConnachie, Alan W

Publisher

Blackwell Publishing Ltd

Abstract

We present a spectroscopic survey of candidate red giant branch stars in the extended star cluster, EC4, discovered in the halo of M31 from our Canada - France - Hawaii Telescope/MegaCam survey, overlapping the tidal streams, Streams 'Cp' and 'Cr'. These