Infrared photometry of upper main sequence stars in M39

Details Infrared photometry of upper main sequence stars in M39 Infrared photometry of upper main sequence stars in M39

Mar 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26as...87..419m&link_type=abstract

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

Astronomy and Astrophysics

Astrophysics

3

Infrared Photometry, Main Sequence Stars, Open Clusters, Binary Stars, Color-Color Diagram, Color-Magnitude Diagram, Interstellar Extinction, Radial Velocity, Stellar Spectrophotometry

Scientific paper

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.

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