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Spectroscopy of Be stars in NGC 330

Published online by Cambridge University Press:  26 May 2016

Paolo A. Mazzali ,
F. Pasian ,
D.J. Lennon ,
P. Bonifacio  and
V. Castellani
Paolo A. Mazzali
Affiliation:
Osservatorio Astronomico, Via G.B. Tiepolo, 11, Trieste, Italy
F. Pasian
Affiliation:
Osservatorio Astronomico, Via G.B. Tiepolo, 11, Trieste, Italy
D.J. Lennon
Affiliation:
Universitäts Sternwarte, München, Germany
P. Bonifacio
Affiliation:
SISSA, Trieste, Italy
V. Castellani
Affiliation:
Istituto di Astronomia, Università di Pisa, Italy

Extract

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Medium resolution (2Å/px) but high s/n spectra of approximately twenty of the brightest blue stars in the young open cluster NGC 330 in the SMC have been obtained with EFOSC1 on the ESO 3.6m telescope, and analyzed in order to determine the atmospheric parameters and the evolutionary status of the stars. LTE and NLTE model atmosphere calculations were used to determine the stellar parameters. The Teff values were derived from fits of the UV continua for all stars where these were available, using Robertson's (1974) B and V photometry to scale the Kurucz model fluxes for metallicity Z = 0.1Z⊙. Luminosities of the sample stars lie in the range 4.0 < log(L*/L⊙) < 5.0 and spectral types between B0 and late-B.

Type
5. Be Stars: Spectroscopy and Photometry
Information
Symposium - International Astronomical Union , Volume 162: Pulsation, Rotation and Mass Loss in Early-Type Stars , 1994 , pp. 269 - 270
Copyright
Copyright © Kluwer 1994 

References

Feast, M.W.: 1972, Monthly Notices of the RAS 159, 113 CrossRefGoogle Scholar
Grebel, E.K., Richtler, T., de Boer, K.S.: 1992, Astronomy and Astrophysics 254, L5 Google Scholar
Lennon, D.J., Mazzali, P.A., Pasian, F., Bonifacio, P., Castellani, V.: 1993 Space Science Reviews, in press Google Scholar
Robertson, J.W.: 1974, Astronomy and Astrophysics, Supplement Series 15, 261 Google Scholar