%0 Journal Article %T Age Dating Stellar Populations in the Near Infrared: An absolute age indicator from the presence/absence of red supergiants %+ Institute for Astronomy [Honolulu] %+ Excellence Cluster Universe %+ Astrophysics Research Institute [Liverpool] (ARI) %+ Max Planck Institute for Astrophysics %+ Institute of Astronomical and Physical Geodesy [Munich] %+ Max Planck Institute for Astronomy (MPIA) %+ Institute of Astronomy [Cambridge] %+ School of Physics and Astronomy [Leeds] %+ Laboratoire Univers et Particules de Montpellier (LUPM) %A Gazak, J. Zachary %A Bastian, N. %A Kudritzki, R. P. %A Adamo, A. %A Davies, B. %A Plez, Bertrand %A Urbaneja, M. A. %Z 5 pages, 5 figures. %< avec comité de lecture %Z LUPM:12-064 %@ 1745-3933 %J Monthly Notices of the Royal Astronomical Society: Letters %I Oxford Journals %V 430 %N 1 %P L35 %8 2013-03-01 %D 2013 %Z 1211.6841 %Z 2013MNRAS.430L..35G %R 10.1093/mnrasl/sls043 %K Galaxies %K Clusters %K Stars: supergiants %Z Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] %Z Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR]Journal articles %X The determination of age is a critical component in the study of a population of stellar clusters. In this letter we present a new absolute age indicator for young massive star clusters based on J-H colour. This novel method identifies clusters as older or younger than 5.7 +/- 0.8 Myr based on the appearance of the first population of red supergiant stars. We test the technique on the stellar cluster population of the nearby spiral galaxy, M83, finding good agreement with the theoretical predictions. The localisation of this technique to the near-IR promises that it may be used well into the future with space-- and ground--based missions optimised for near-IR observations. %G English %2 https://hal.science/hal-00785788/document %2 https://hal.science/hal-00785788/file/1211.6841.pdf %L hal-00785788 %U https://hal.science/hal-00785788 %~ IN2P3 %~ CNRS %~ UNIV-MONTP2 %~ LUPM %~ MIPS %~ UNIV-MONTPELLIER %~ LUPM_AS %~ UM1-UM2