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Can Evolution in Close Binaries Account for the Blue Stragglers in M67?

Published online by Cambridge University Press:  07 August 2017

Alejandra A. E. Milone ,
David W. Latham ,
Robert D. Mathieu ,
Jon A. Morse  and
Robert J. Davis
Alejandra A. E. Milone
Affiliation:
Harvard-Smithsonian Center for Astrophysics and Córdoba Observatory, National University of Córdoba Laprida 854, 5000 Córdoba, Argentina
David W. Latham
Affiliation:
Harvard-Smithsonian Center for Astrophysics 60 Garden Street, Cambridge, Massachusetts 02138, U.S.A.
Robert D. Mathieu
Affiliation:
Department of Astronomy, University of Wisconsin 475 Charter Street, Madison, Wisconsin 53706, U.S.A.
Jon A. Morse
Affiliation:
Department of Physics and Astronomy, University of North Carolina CB #3255, Phillips Hall, Chapel Hill, NC 27599-3255, U.S.A.
Robert J. Davis
Affiliation:
Harvard-Smithsonian Center for Astrophysics 60 Garden Street, Cambridge, Massachusetts 02138, U.S.A.

Extract

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For the past 9 years we have been monitoring the radial velocities of 13 blue stragglers in the old open cluster M67. For the 9 blue stragglers with rotational velocities no larger than about 100 km s−1 we have used the CfA digital speedometers to measure more than 500 radial velocities. To get reliable velocity correlations we use synthetic rotating templates computed from a grid of Kurucz model atmospheres. Four of the blue stragglers rotate too rapidly to allow successful velocity correlations with the CfA instruments. For three of these we have used a CCD spectrograph at Kitt Peak and similar reduction procedures (Morse et al. 1991.

Type
Oral and Contributed Papers
Information
Symposium - International Astronomical Union , Volume 151: Evolutionary Processes in Interacting Binary Stars , 1992 , pp. 473 - 474
Copyright
Copyright © Kluwer 1992 

References

Collier, A. C., & Jenkins, C. R. 1984, MNRAS, 211, 391 Google Scholar
Fagerholm, E. 1906, Inaugural Dissertation, Uppsala Google Scholar
Girard, T. M., Grundy, W. M., Lopez, C. E., & van Altena, W. F. 1989, AJ, 98, 227 CrossRefGoogle Scholar
Leonard, P. J. T. 1989, AJ, 98, 217 Google Scholar
Leonard, P. J. T., & Fahlman, G. G. 1991, AJ, in press Google Scholar
McCrea, W. H. 1964, MNRAS, 128, 147 Google Scholar
Milone, A. A. E., & Latham, D. W. 1992, this volume Google Scholar
Morse, J. A., Mathieu, R. D., and Levine, S. E. 1991, AJ, 101, 1495 Google Scholar
Paczynski, B. 1971, ARA&A, 9, 183 Google Scholar
Sanders, W. L. 1977, A&AS, 27, 89 Google Scholar