Photoelectric Observations of Extremely Young Open Clusters

Details Photoelectric Observations of Extremely Young Open Clusters Photoelectric Observations of Extremely Young Open Clusters

Jun 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jkas...16....7k&link_type=abstract

Journal of the Korean Astronomical Society, vol. 16, no. 1, p. 7-17

Astronomy and Astrophysics

Astronomy

13

Scientific paper

During the period between January and November in 1982, UBV photoelectric observations were made for 48 stars in NGC 2264, 66 stars in IC 1805 and 22 stars in IC 348. From these observations, various physical parameters such as distance, mean color excess, total-to-selective extinction ratio and mean age of the clusters were determined. Making use of these parameters, the star formation rates were examined for IC 348 and NGC 2264. The overall formation rate is found to be increase rapidly during the period of the active star formation. The age spread (ranging from 5x10**6 yrs to 10**7 yrs) of stars in a given cluster appears to be real which occurs in the extremely young open clusters.

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