IAUC 3977 available at Central Bureau for Astronomical Telegrams. IAUC 3977 available at Central Bureau for Astronomical Telegrams.

It is shown that, given suitable radial velocity values for the stars and the local interstellar medium (LISM) interstellar absorption can be distinguished from chromospheric self absorption within the MgII emissions from late type stars. Beta Hyi (G2IV) offers a clear example. Zeta Tuc (G2V) and delta Pav (G8V) which are very close to beta Hyi

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An IUE archive spectrum of HD 140283 has been analyzed in the region of the 3131 Å 9Be II resonance doublet. Close comparison of the observed and synthetic spectra yields no measurable Be, and a conservative upper limit of 3×10-12 for 9Be, which is one fourth solar, can be set. With this star, and with a previous population II star HD 76932

A calibrated numerical simulation of seasons for which there are observations of the passage of active regions across the visible disk of the sun, generating a velocity signal that can be compared with the Claverie et al. (1982) observations, has yielded values of this signal for a complete solar cycle. The results obtained indicate that the

If such external influences as the impact of a comet on the solar surface could destroy or mask the coherence of observed solar oscillations, the scope and effectiveness of extended study in this field would be considerably limited. It is therefore important to investigate any possible effects due to the recently reported comet impacts on the sun