COMING SHELL PHASE OF THE BE STAR 4-HERCULIS

Authors
KOUBSKY P HORN J HARMANEC P HUBERT AM HUBERT H FLOQUET M
Citation
P. Koubsky et al., COMING SHELL PHASE OF THE BE STAR 4-HERCULIS, Astronomy and astrophysics, 277(2), 1993, pp. 521-523
Citations number
14
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Astronomy and astrophysics → ACNP
ISSN journal
00046361
Volume
277
Issue
2
Year of publication
1993
Pages
521 - 523
Database
ISI
SICI code
0004-6361(1993)277:2<521:CSPOTB>2.0.ZU;2-V
Abstract
After a relatively short period of quiescence (1989 - 1991), the B7V s tar 4 Her entered a new Be and shell phase. The most interesting featu re which accompanies the beginning of the new shell episode is an appa rent doubling of several different metallic shell lines seen consisten tly in our high-S/N electronic spectra. We suggest that this doubling is a consequence of a central emission feature rather than of a two-co mponent shell.