SIMBAD references

2010MNRAS.409.1002D - Mon. Not. R. Astron. Soc., 409, 1002-1012 (2010/December-2)

IC 2602: a lithium depletion boundary age and new candidate low-mass stellar members.


Abstract (from CDS):

We report the results from a photometric and spectroscopic survey of ∼1.4 deg2 of the young open cluster IC 2602. Fourteen objects have been identified as having magnitudes, spectral types and radial velocities consistent with being probable or possible low-mass stellar members of the cluster. We have used the observed location of the lithium depletion boundary in the sequence defined by these objects to place a new and improved constraint on the cluster age, τ= 46+6–5Myr. This new determination is larger by a factor ∼1.3–1.8 than the majority of age estimates which have been obtained using the main-sequence turn-off or pre-main-sequence isochrone techniques. It is thus consistent with the trend indicated by the results of similar studies on other young open clusters. Based on this new age, we set a lower limit on the cluster mass function over the range M = 0.054 - 0.24 M, dn/dM > 46 M–1. If the mass function of IC 2602 has a form similar to that of other young clusters and associations then future wide, deep surveys can expect to unearth at least a handful of brown dwarfs which could potentially serve as benchmark objects.

Based on observations made with Anglo-Australian Telescope at Siding Spring Observatory, Australia.

Abstract Copyright: 2010 The Authors. Journal compilation2010 RAS

Journal keyword(s): techniques: photometric - brown dwarfs - stars: low-mass - open clusters and associations: individual: IC 2602

CDS comments: In text 2MASS J10439236-6402132 is a misprint for ??

Simbad objects: 32

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