Study of faint young open clusters as tracers of spiral features in our galaxy |
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| Authors: | G S D Babu |
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| Institution: | (1) Indian Institute of Astrophysics, 560034 Bangalore |
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| Abstract: | Continuing the study of faint young open clusters as tracers of spiral features in our Galaxy, photoelectric and photographic
photometry of 39 stars was done in the field of the faint open cluster NGC 2236 ≡ OCl 501 in the direction of Monoceros constellation.
Out of these stars, a total of 22 down tom
v ≃ 15.4 mag have been found to be probable members. There is apparently a variable extinction across the field of the cluster
with E(B - V) ranging between 0.84 mag and 0.68 mag. The median age of this cluster is estimated to be 7.6 × 107 years and the cluster is thereby considered as belonging to the marginally old category. Thus, it cannot be specifically
used as a spiral arm tracer in the study of our Galaxy. This cluster is located at a distance of 3.72 ± 0.13 kpc, which places
it at the inner edge of the outer Perseus spiral feature of the Milky Way. |
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| Keywords: | star clusters open spiral feature tracers stars photometry |
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