Near infrared imaging of NGC 2316

Author(s)

P. S. Teixeira, S. R. Fernandes, J. F. Alves, J. C. Correia, F. D. Santos, E. A. Lada, C. J. Lada

Abstract

In the present paper we present JHK photometric results of the young

embedded cluster NGC 2316. We construct the cluster radial profile from

which we determine a radius of 0.63 pc. We find 189 ± 29 cluster

members in an extinction limited sub-sample of the survey, 22± 19

of which are possibly substellar. An average extinction of 4.5 visual

magnitudes is derived using (H - K) colours of control fields. This

extinction is due to the presence of residual parental molecular cloud.

NGC 2316 presents 16% source fraction of excess emission which is

consistent with other results from clusters with an age of 2-3 Myr. This

age is consistent with the distribution of sources in the

colour-magnitude diagram when compared to theoretical isochrones, and

the overall shape of the cluster KLF. The substellar population of the

cluster is similar or smaller than that observed for other embedded

clusters and the stellar objects dominate the cluster membership.

Based on observations carried out at ESO, La Silla, Chile.

Organisation(s)

Department of Astrophysics

External organisation(s)

University of Florida, Gainesville, Universidade Técnica de Lisboa, Harvard-Smithsonian Center for Astrophysics

Journal

Astronomy & Astrophysics

Volume

413

DOI

https://doi.org/10.1051/0004-6361:20034621

Publication date

01-2004

Peer reviewed

Yes

Keywords

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