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Exploring Abundance and Isotope Anomalies in CP Stars with the HST/GHRS: High Resolution UV Spectroscopy of χ Lupi

Published online by Cambridge University Press:  12 April 2016

David S. Leckrone ,
Glenn M. Wahlgren ,
Sveneric G. Johansson  and
Saul J. Adelman
David S. Leckrone
Affiliation:
NASA, Goddard Space Flight Center, Code 681, Greenbelt, MD 20771, USA
Glenn M. Wahlgren
Affiliation:
Computer Sciences Corporation, Goddard Space Flight Center, Code 681, Greenbelt, MD 20771, USA
Sveneric G. Johansson
Affiliation:
University of Lund, Physics Department, Atomic Spectroscopy, Solvegatan 14, S-223 62 Lund, SWEDEN
Saul J. Adelman
Affiliation:
The Citadel, Department of Physics, Charleston, SC 29409, USA

Abstract

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We are using the HST/GHRS in a long-term program to obtain UV spectra of unprecedented resolution and precision for bright, ultra-sharp-lined Bp (HgMn) stars and comparable normal stars. To date we have doubled the number of heavy elements for which abundances may be estimated in χ Lupi, and have obtained the first observations of Hg III lines with which to test diffusion scenarios for its extreme Hg isotope anomaly.

Type
I. General Properties of CP Stars
Information
International Astronomical Union Colloquium , Volume 138: Peculiar versus Normal Phenomena in A-Type and Related Stars , 1993 , pp. 42 - 59
Copyright
Copyright © Astronomical Society of the Pacific 1993

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