Multisite Continuous Spectroscopy - Part One - Overview of the MUSICOS 1989 Campaign Organization

Details Multisite Continuous Spectroscopy - Part One - Overview of the MUSICOS 1989 Campaign Organization Multisite Continuous Spectroscopy - Part One - Overview of the MUSICOS 1989 Campaign Organization

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...275..245c&link_type=abstract

Astronomy and Astrophysics, Vol.275, NO. 1/AUG(I), P. 245, 1993

Astronomy and Astrophysics

Astrophysics

23

Methods: Observational, Techniques: Spectroscopic, Stars: Activity, Stars: Emission Line, Be, Stars: Pre-Main Sequence

Scientific paper

We describe the organization of the multi-site spectroscopic MUSICOS 1989 campaign. This international campaign involved a large number of telescopes distributed around the world. In order to yield a complete time coverage, we had to transport two fiber-fed spectrographs, built at Paris-Meudon Observatory, to remote sites. Three scientific programs were followed during this campaign: 1) search for nonradial pulsations in the Be star 48 Per; 2) search for the signature of "co-rotating interaction regions" in the wind of the pre-main sequence Herbig Ae star AB Aur; 3) Doppler imaging and flare patrol for the RS CVn system HR 1099. The goal of the campaign was to provide a continuous coverage of these three targets in selected spectral lines.
Programs 1 and 3 were successful, in the sense that the resulting duty cycle was over 80% for 48 Per and HR 1099. On the other hand, program 2 was unsuccessful, due to bad weather at most of the sites during the nights devoted to AB Aur.
Although the initial goal of program 2 was not achieved, the observed spectra indicate an unusual activity level for AB Aur, and these results are presented here, while detailed analysis of the results of programs 1 and 3 will be published separately.

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