Details

Autor(en) / Beteiligte

• Brandner, Wolfgang
• Tully, R. Brent
• N. Heasley, James

Titel

M31 Globular Clusters in the Near-Infrared

Ist Teil von

• Symposium - International Astronomical Union, 2002, Vol.207, p.152-153

Erscheinungsjahr

2002

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We have observed the M31 globular clusters with the University of Hawaii Adaptive Optics System Hokupa'a at the Gemini North 8m telescope on Mauna Kea. This is part of a project which aims at spatially resolving intermediate-age and old-age stellar populations in the Local Volume and beyond - possibly out to distances of the Virgo and Fornax clusters. The sparse M31 globular cluster G27 (Hubble 6) is for the first time resolved into individual stars. The tip of the red giant branch (TRGB) at K≈18.8mag yields a metallicity of Z around 0.001 solar for G27.