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.
Referencia bibliográfica

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

Fecha de publicación:
12
1989
Número de autores
7
Número de autores del IAC
1
Número de citas
35
Número de citas referidas
28
Descripción
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.
Tipo
Con árbitro
Nubes de Magallanes
Estrellas OB
Evolución estelar

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