Shell lines in 48 Lib: The discovery of narrow optical absorption components (NOACs).

Details Shell lines in 48 Lib: The discovery of narrow optical absorption components (NOACs). Shell lines in 48 Lib: The discovery of narrow optical absorption components (NOACs).

Aug 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26a...312l..17h&link_type=abstract

Astronomy and Astrophysics, v.312, p.L17-L20

Astronomy and Astrophysics

Astrophysics

9

Line Profiles, Be Stars, Circumstellar Matter

Scientific paper

We report on the detection of extremely narrow satellite absorption features in Fe II shell lines of the Be-shell star 48 Lib. These features are variable in radial velocity and depth on a timescale of less than a day. We discuss the origin of these features and speculate that they either are caused by co-rotating clumps in the disk, or by higher-order distortions in the global density wave hosted by the disk.

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