Quantitative spectroscopy of O-stars in the Magellanic Clouds. I - The young open cluster NGC 346 in the SMC

Bibcode
1989A&A...226..235K
Kudritzki, R. P.; Cabanne, M. L.; Husfeld, D.; Niemela, V. S.; Groth, H. G.; Puls, J.; Herrero, A.
Bibliographical reference

Astronomy and Astrophysics (ISSN 0004-6361), vol. 226, no. 1, Dec. 1989, p. 235-248.

Advertised on:
12
1989
Number of authors
7
IAC number of authors
1
Citations
35
Refereed citations
28
Description
Results are presented on a non-LTE analysis of high-resolution Cassegrain echelle CCD spectra of the four most luminous stars in the NGC 346 cluster in the SMC, obtained with the ESO 3.6-m telescope, making it possible to estimate the age of the NGC 346 cluster and to trace its evolution. The results yield the effective temperatures, gravities, helium abundances, luminosities, and an estimate of ZAMS and present masses. It is shown that the observed stellar parameters are consistent with a cluster age of 2.6 + or - 0.5 Myr.
Type
Refereed
Magellanic Clouds
O stars
Stellar evolution

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