Hostname: page-component-78c5997874-g7gxr Total loading time: 0 Render date: 2024-11-14T23:38:05.118Z Has data issue: false hasContentIssue false
  • English
  • Français

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

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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