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LAMOST has released more than two million spectra, which provide theopportunity to search for double-peaked narrow emission line (NEL) galaxies andAGNs. The double-peaked narrow-line profiles can be well modeled by twovelocity components, respectively blueshifted and redshifted with respect tothe systemic recession velocity. This paper presents 20 double-peaked NELgalaxies and AGNs found from LAMOST DR1 using a search method based onmulti-gaussian fit of the narrow emission lines. Among them, 10 have alreadybeen published by other authors, either listed as genuine double-peaked NELobjects or as asymmetric NEL objects, the remaining 10 being first discoveries.We discuss some possible origins for double-peaked narrow-line features, asinteraction between jet and narrow line regions, interaction with companiongalaxies and black hole binaries. Spatially resolved optical imaging and/orfollow-up observations in other spectral bands are needed to further discussthe physical mechanisms at work.

A Search for Double-peaked narrow emission line Galaxies and AGNs in the LAMOST DR1