The population in the background of open clusters: Tracer of the Norma-Cygnus arm
نویسندگان
چکیده
We present colour-magnitude diagrams of open clusters, located in the range 112◦ < l < 252◦, manifesting stellar populations in the background of clusters. Some of the populations are found to be located beyond the Perseus arm and may be the part of Norma-Cygnus (outer) arm. The outer arm seems to be continued from l ∼ 120◦ to l ∼ 235◦. The background populations follow the downward warp of the Galactic plane around l ∼ 240◦.
منابع مشابه
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