Hostname: page-component-78c5997874-v9fdk Total loading time: 0 Render date: 2024-11-14T07:57:26.908Z Has data issue: false hasContentIssue false
  • English
  • Français

A Spectroscopic Study of Blue Stragglers in M67

Published online by Cambridge University Press:  01 April 2008

G. Q. Liu ,
L. Deng ,
M. Chávez  and
E. Bertone
G. Q. Liu
Affiliation:
National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, P. R. China email: lgq@bao.ac.cn, licai@bao.ac.cn Graduate University of ChineseAcademy of Sciences, Beijing 100049, P. R. China
L. Deng
Affiliation:
National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, P. R. China email: lgq@bao.ac.cn, licai@bao.ac.cn
M. Chávez
Affiliation:
INAOE - Instituto Nacional de Astrofísica, Óptica y Electrónica, Luis Enrique Erro 1 - 72840 Tonantzintla, Puebla, Mexico email: mchavez@inaoep.mx, ebertone@inaoep.mx
E. Bertone
Affiliation:
INAOE - Instituto Nacional de Astrofísica, Óptica y Electrónica, Luis Enrique Erro 1 - 72840 Tonantzintla, Puebla, Mexico email: mchavez@inaoep.mx, ebertone@inaoep.mx
Rights & Permissions [Opens in a new window]

Abstract

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.

Spectrophotometric observations of the complete sample of twenty four blue stragglers (BSs) in the old galactic open cluster M67 (NGC2682) have been collected, using the Guillermo Haro Observatory in Cananea, Mexico. All the calibrated spectra were re-calibrated by the Beijing Arizona Taipei Connecticut (BATC) photometric system which includes fluxes in 11 photometric bands covering ~3600–10000 Å. The goal of the current work is to provide observational constraints on spectral properties of BSs by determining the effective temperature (Teff) and surface gravity (log g). The overall results, obtained by applying the flux fitting method, indicate that Teff and surface gravities of BSs in M67 are fully compatible with those expected for main sequence stars.

Keywords

Stars: blue stragglers – Stars: Hertzsprung-Russell (HR) diagram – Galaxy: open clusters and associations: individual: M67
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S252: The Art of Modeling Stars in the 21st Century , April 2008 , pp. 391 - 397
Copyright
Copyright © International Astronomical Union 2008

References

Ahumada, J. A. 1999, RMxAC 8, 89Google Scholar
Bacon, D., Sigurdsson, S., & Davies, M. B. 1996, MNRAS 281, 830CrossRefGoogle Scholar
Benz, W. & Hills, J. G. 1987, ApJ 323, 614CrossRefGoogle Scholar
Benz, W. & Hills, J. G. 1992, ApJ 389, 546CrossRefGoogle Scholar
Bertone, E., Buzzoni, A., Chávez, M., & Rodríguez-Merino, L. H. 2004, AJ 128, 829CrossRefGoogle Scholar
Bertone, E., Buzzoni, A., Chávez, M., & Rodríguez-Merino, L. H. 2008, A&A acceptedGoogle Scholar
Bressan, A., Fagotto, F., Bertelli, G., & Chiosi, C. 1993, A&AS 100, 647Google Scholar
Bressan, A. & Tautvaisiene, G. 1996, Baltic Astron. 5, 239Google Scholar
Deng, L., Chen, R., Liu, X. S., & Chen, J. S. 1999, ApJ 524, 824CrossRefGoogle Scholar
Fan, X., Burstein, D., Chen, J. S., Zhu, J., Jiang, Z., Wu, H., Yan, H., Zheng, Z., Zhou, X., Fang, L.-Z. and 16 coauthors 1996, AJ 112, 628CrossRefGoogle Scholar
Ferraro, F. R., Paltrinieri, B., Fusi Pecci, F., Cacciari, C., Dorman, B., Rood, R. T., Buonanno, R., Corsi, C. E., Burgarella, D., & Laget, M. 1997, A&A 324, 915Google Scholar
Gilliland, R. L. & Brown, T. M. 1992, AJ 103, 1945CrossRefGoogle Scholar
Girard, T. M., Grundy, W. M., Lopez, C. E., & van Altena, W. F. 1989, AJ 98, 227CrossRefGoogle Scholar
Hobbs, L. M. & Thorburn, J. A. 1991, AJ 102, 1070CrossRefGoogle Scholar
Leonard, P. J. T. 1989, AJ 98, 217CrossRefGoogle Scholar
Lejeune, Th., Cuisinier, F., & Buser, R. 1997, A&AS 125, 229Google Scholar
Lejeune, Th., Cuisinier, F., & Buser, R. 1998, A&AS 130, 65Google Scholar
Liu, G. Q., Deng, L., Chávez, M., & Bertone, E. et al. 2008, MNRAS, submittedGoogle Scholar
Livio, M. 1993, ASPC 53, 3Google Scholar
Manteiga, M., Martinez, R. C., & Pickles, A. J. 1989, ApSS 156, 169Google Scholar
Ouellette, J. A., & Pritchet, C. J. 1998, AJ 115, 2539CrossRefGoogle Scholar
Pickles, A. J. 1998, PASP 110, 863CrossRefGoogle Scholar
Piotto, G., Zoccali, M., King, I. R., Djorgovski, S. G., Sosin, C., Dorman, B., Rich, R. M., & Meylan, G. 1999, AJ 117, 264CrossRefGoogle Scholar
Sandage, A. R. 1953, AJ 58, 61CrossRefGoogle Scholar
Sanders, W. L. 1977, A&AS 27, 89Google Scholar
Stryker, L. L. 1993, PASP 105, 1081CrossRefGoogle Scholar
Tian, B., Deng, L., Han, Z., & Zhang, X. B. 2006, A&A 455, 247Google Scholar
Xin, Y., Deng, L., & Han, Z. 2007, ApJ 660, 319CrossRefGoogle Scholar
Xin, Y., Deng, L., de Grijs, R., et al. 2008, MNRAS 384, 410CrossRefGoogle Scholar