EDP Sciences
Free access
Volume 430, Number 2, February I 2005
Page(s) 747 - 749
Section Instruments, observational techniques, and data processing
DOI http://dx.doi.org/10.1051/0004-6361:20042069

A&A 430, 747-749 (2005)
DOI: 10.1051/0004-6361:20042069

Research Note

On the purity of Be II measurements

R. E. Griffin

Department of Earth & Space Sciences and Engineering, York University, Toronto, Canada
    e-mail: Elizabeth.Griffin@nrc.gc.ca

(Received 24 September 2004 / Accepted 5 November 2004 )

The presence of broad absorption features of telluric ozone close to the Be II doublet seems to have been ignored in the literature. Actually, for objects with small or negative velocities the Be II lines are not affected by ozone absorption; however, for objects with high positive velocities (as are found in some globular cluster members and Population II objects) the stellar Be II lines will be red-shifted onto the flanks of a nearby ozone feature to an extent that could have a significant impact on accurate calculations of stellar Be abundances.

Key words: atmospheric effects -- methods: observational -- techniques: miscellaneous

© ESO 2005