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New Homogeneous v sin i Determinations for B Stars in Galactic Open Clusters

Published online by Cambridge University Press:  26 May 2016

P. North ,
F. Royer ,
C. Melo ,
J. R. de Medeiros ,
J. D. do Nascimento Jr. ,
J.-C. Mermilliod ,
E. K. Grebel ,
A. Maeder  and
R. Mathieu
P. North
Affiliation:
Institut d'Astronomie de l'Université de Lausanne, CH-1290 Chavannes-des-Bois, Switzerland
F. Royer
Affiliation:
Observatoire de Genève, CH-1290 Sauverny, Switzerland
C. Melo
Affiliation:
European Southern Observatory, Santiago 19, Chile
J. R. de Medeiros
Affiliation:
Universidade Federal do Rio Grande do Norte, Natal, Brazil
J. D. do Nascimento Jr.
Affiliation:
Universidade Federal do Rio Grande do Norte, Natal, Brazil
J.-C. Mermilliod
Affiliation:
Institut d'Astronomie de l'Université de Lausanne, CH-1290 Chavannes-des-Bois, Switzerland
E. K. Grebel
Affiliation:
Max Planck Institut für Astronomie, D-69117 Heidelberg, Germany
A. Maeder
Affiliation:
Observatoire de Genève, CH-1290 Sauverny, Switzerland
R. Mathieu
Affiliation:
Wisconsin University, Madison WI 53706 1582, USA

Abstract

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We present new observations of projected rotational velocities of main sequence B stars in the galactic clusters NGC 2439, NGC 3293, NGC 3766, NGC 4755, NGC 7160 and h & χ Persei. 257 stars have been observed with three instruments, 207 of which are presented here. Projected rotational velocities have been determined by least-squares fit to synthetic spectra. Our v sin i scale is compared with that of Slettebak et al. (1975).

Type
Session 1 Observations of Rotating Stars
Information
Symposium - International Astronomical Union , Volume 215: Stellar Rotation , 2004 , pp. 69 - 70
Copyright
Copyright © Astronomical Society of the Pacific 2004 

References

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