| Issue |
A&A
Volume 430, Number 2, February I 2005
|
|
|---|---|---|
| Page(s) | 747 - 749 | |
| Section | Astronomical instrumentation | |
| DOI | https://doi.org/10.1051/0004-6361:20042069 | |
| Published online | 20 January 2005 | |
Research Note
On the purity of Be II measurements
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
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