Coming Shell Phase of the Be-Star 4-HERCULIS

Details Coming Shell Phase of the Be-Star 4-HERCULIS Coming Shell Phase of the Be-Star 4-HERCULIS

Oct 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...277..521k&link_type=abstract

Astronomy and Astrophysics, Vol. 277, NO. 2/OCT(I), P. 521, 1993

Astronomy and Astrophysics

Astrophysics

2

Stars: Emission-Line, Be - Binaries: Spectroscopic

Scientific paper

After a relatively short period of quiescence (1989 - 1991), the B7V star 4 Her entered a new Be and shell phase. The most interesting feature which accompanies the beginning of the new shell episode is an apparent doubling of several different metallic shell lines seen consistently 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-component shell.

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