The MUSICOS Network

Multi-Site Continuous Spectroscopy

MUSICOS is a French-led consortium formed to obtain high-resolution spectra of a single target for several days continuously. To do this, identical spectrographs are placed on several 2m-class telescopes around the world, and supporting observations are arranged at many others.

My spectral imaging programs carried out with space-based observatories demonstrated the requirement that such observations be conducted continuously for several days, which is not possible from a single ground-based site (except the poles). I was a Principal Investigator in the first two MUSICOS campaigns (December 1989 and December 1992) and have participated in most of the subsequent campaigns.

A comprehensive MUSICOS page can be found at A overview of the MUSICOS project, as well as details about and papers resulting from the 1989, 1992, 1994, and 1996 campaigns papers can be found at


  1. MUSICOS (MUlti-SIte COntinuous Spectroscopy): Objectives and Prospects for Asteroseismology, B.H. Foing, C. Catala, P. Felenbock, in Seismology of the Sun and Sun-Like Stars, ESA, p. 665, 1988.
  2. Surface Structures and Flares on RS CVn-type Stars, J.E. Neff, in Proc. 2nd Musicos Workshop, eds. C. Catala and B. Foing, (Meudon Observatory), p. 35, 1990.
  3. MUSICOS - A Fiber-Fed Spectrograph for Multi-Site Observations, J. Baurand and T. Bohm, Astron. Astrophys., 259, 711, 1992.
  4. Multi-Site Continuous Spectroscopy. I. Overview of the MUSICOS 1989 Campaign Organization, C. Catala et al., Astron. Astrophys., 275, 245, 1993.
  5. Multi-Site Continuous Spectrophotometry. II. Spectrophotometry and Energy Budget of Exceptional White-Light Flares on HR 1099 From the MUSICOS 89 Campaign, B.H Foing et al., Astron. Astrophys., 292, 543, 1994.
  6. Multisite Continuous Spectroscopy. III. Photometric Analysis and Spot Modelling of the Light Curves of HR 1099 Before and After the 1989 Optical Flares, D.S. Zhai, B.H. Foing, G. Cutispoto, R.X. Zhang, C. Catala, S. Char, X.B. Zhang, S. Jankov, Astron. Astrophys., 282, 168, 1994.
  7. Multi-Site Continuous Spectroscopy: The MUSICOS Network, B.H. Foing et al., in Cool Stars, Stellar Systems, and the Sun, ed. J.-P. Caillault, (ASP Conf. Series), p. 699, 1994.
  8. Continuous Coverage of HR 1099 with IUE During the MUSICOS 1992 Campaign, J.E. Neff, I. Pagano, M. Rodonò, (invited review), in Proc. Fourth MUSICOS Workshop, ed. L. Huang et al. (Beijing Astronomical Observatory), p. 157, 1995.
  9. Multi-Site Continuous Spectroscopy. IV. The Oscillation Modes of Theta-2 Tauri, E.J. Kennelly, G.A.H. Walker, C. Catala, B.H. Foing, L. Huang, S. Jiang, J. Hao, D. Zhai, F. Zhao, J.E. Neff, E. Houdebine, K.K. Ghosh, P. Charbonneau, Astron. Astrophys., 313, 571, 1996.
  10. Azimuthal Structures in the Wind and Chromosphere of the Herbig Ae Star AB Aur. Results from the MUSICOS 1992 Campaign, T. Bohm, C. Catala, J.-F. Donati, A. Welty, J. Baudrand, C.J. Butler, B. Carter, A. Collier-Cameron, J. Czarny, B. Foing, K. Ghosh, J. Hao, E. Houdebine, L. Huang, S. Jiang, J.E. Neff, D. Rees, M. Semel, T. Simon, A. Talavera, D. Zhai, F. Zhao, Astron. Astrophys. Suppl., 120, 431 1996.
  11. Multi-Site Continuous Spectroscopy. V. Rapid Photospheric Variability in the Be Star 48 Per from the MUSICOS 1989 Campaign, A.-M. Hubert, M. Floquet, J.X. Hao, S. Caillet, C. Catala, B.H. Foing, J.E. Neff, L. Huang, H. Hubert, P. Avellar, C. Barban, J. Baudraund, H. Cao, S., Char, H. Chatzichristou, J.G. Cuby, J. Czarny, M. Dreux, P. Felenbock, J. Guerin, J. Hron, J. Huovelin, S. Jankov, S. Jiang, J.M. Le Contel, H.M, Maitzen, P. Petrov, I. Savanov, A. Shcherbakov, T. Simon, P. Stee, I. Tuominen, D. Zhai, Astron. Astrophys., 324, 929, 1997.
  12. Nonradial Pulsations, Rotation, and Outbursts in the Be Star Omega Orionis from the MUSICOS 1998 Campaign, C. Neiner et~al., Astron. Astrophys., 388, 899, 2002.
  13. Simultaneous Optical and X-ray Observations of Flares and Rotational Modulation on the RS CVn Binary HR 1099 (V711 Tau) from the MUSICOS 1998 Campaign, D. Garcia-Alvarez et~al., Astron. Astrophys., submitted.

James E. Neff, (