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A Very Reduced Upper Limit on the Interstellar Abundance of Beryllium1

Published online by Cambridge University Press:  25 May 2016

Guillaume Hébrard ,
Martin Lemoine ,
Roger Ferlet  and
Alfred Vidal-Madjar
Guillaume Hébrard
Affiliation:
Institut d’Astrophysique de Paris, CNRS, 98 bis boulevard Arago, F-75014 Paris, France
Martin Lemoine
Affiliation:
DARC, Observatoire de Paris-Meudon, France
Roger Ferlet
Affiliation:
Institut d’Astrophysique de Paris, France
Alfred Vidal-Madjar
Affiliation:
Institut d’Astrophysique de Paris, France

Abstract

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We present the results of observations of the λ3130 interstellar absorption doublet of 9Be ii in the direction of ζ Per. The data were obtained at the Canada-France-Hawaii 3.6m telescope using the Gecko spectrograph at a resolving power ∼ 110000 and a signal-to-noise ratio ∼ 2000. The 9Be ii lines are not detected and we obtain an upper limit on the equivalent width W ≤ 30μÂ. This upper limit is 7 times below the lowest upper limit ever reported hitherto. The derived interstellar abundance is (9Be/H) ≤ 7 × 10—13; it corresponds to an upper limit δBe ≤ —1.5 dex on the depletion factor of 9Be.

Type
5. Abundance of Beryllium and Boron
Information
Symposium - International Astronomical Union , Volume 198: The Light Elements and their Evolution , 2000 , pp. 432 - 434
Copyright
Copyright © Astronomical Society of the Pacific 2000 

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