Abstract:Shell stars, in particular the cooler ones, often do not show conspicuous Balmer-line emission and may consequently be missed in surveys that specifically search for emission signatures in the Hα line. The present work is aimed at identifying stars with shell-signatures via a search for strong Fe ii multiplet 42 lines at λλ4924, 5018, 5169 Å in archival LAMOST spectra. Candidates were selected by probing the Fe ii (42) lines in the spectra of a sample of colour-preselected early-type stars using a modified ver… Show more
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