Of-stars in young open clusters

Details Of-stars in young open clusters Of-stars in young open clusters

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...159..223f&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 159, no. 1-2, April 1986, p. 223-230. Research supported by the Comision de In

Astronomy and Astrophysics

Astrophysics

20

Early Stars, O Stars, Open Clusters, Stellar Evolution, Hertzsprung-Russell Diagram, Stellar Color, Stellar Luminosity, Wolf-Rayet Stars

Scientific paper

The authors obtained from the literature photometric and spectroscopic data for 54 Of-type stars that belong to 21 young open clusters. Their location in the HR diagram shows that all of them are high luminosity objects slightly evolved from the ZAMS. The Of objects are more common, but more difficult to detect than WR stars in open clusters. The open clusters that have several Of stars allowed the authors to check that their positions in the Mbol-logTeff diagram are in a quite good agreement with theoretical evolutionary tracks; accordingly, the Of stars might provide a quick way to derive the ages of very young open clusters.

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