Infrared photometry of upper main sequence stars in M39

Manteiga, M.; Martinez-Roger, C.; Morales, C.; Sabau, L.
Bibliographical reference

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 87, no. 3, March 1991, p. 419-423.

Advertised on:
3
1991
Number of authors
4
IAC number of authors
2
Citations
4
Refereed citations
4
Description
Infrared photometry of 19 Main sequence stars in the open cluster M39 is presented. Infrared-infrared and optical-infrared color-color and color-magnitude diagrams are presented and compared with mean intrinsic color for Population I stars. An interstellar reddening of E(B - V) = 0.01 is obtained by analysis of the color-color diagrams. Comparison with a set of theoretical isochrones leads to an age estimate for the cluster between 240 and 480 million years.