Using the Coudé Echelle Spectrograph fed by the 1.4 m Coudé Auxiliary Telescope at ESO, La Silla, the authors have obtained a sequence of fourteen high resolution (λ/Δλ = 105) spectra at high signal to noise ratio, of main sequence and near main sequence objects in the wavelength range containing the 6708 Å resonance doublet of lithium. Using

Studying a sample of late-B fast rotators, the authors have detected narrow absorptions of C IV and Si IV in the direction of six stars within 200 pc of the sun. The features are faint and narrow and in a few cases superimposed on broader and more complex profiles. It is not yet clear if they originate in the surroundings of the star or in the

Study of a sample of late-B fast rotators revealed narrow absorptions of C IV and Si IV in the direction of 6 stars within 200 pc of the Sun. The features are faint and narrow and in a few cases superimposed on broader and more complex profiles. It is not clear if they originate in the surroundings of the star or in the diffuse interstellar medium

IAUC 4252 available at Central Bureau for Astronomical Telegrams. IAUC 4252 available at Central Bureau for Astronomical Telegrams.

The Mg II chromospheric emissions in cool stars were analyzed using high resolution IUE archive spectra. The ways in which interstellar (IS) absorptions can affect the shapes of the chromospheric profiles are discussed. It is possible to indicate regions of the sky where the Mg II IS absorption can be neglected, up to distances of a few tens of

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