We outline a full-scale search for galaxies exhibiting double-peaked profiles of promi- nent narrow emission lines, motivated by the prospect of finding objects related to merging galaxies, and even dual active galactic nuclei candidates as by-product, from the Large Sky Area Multi-object Fiber Spectroscopic Telescope (LAMOST) Data Re- lease 4. We assemble a large sample of 325 candidates with double-peaked or strong asymmetric narrow emission lines, with 33 objects therein appearing optically resolved dual-cored structures, close companions or signs of recent interaction on the Sloan Dig- ital Sky Survey images. A candidate from LAMOST (J074810.95+281349.2) is also stressed here based on the kinematic and spatial decompositions of the double-peaked narrow emission line target, with analysis from the cross-referenced Mapping Nearby Galaxies at the Apache Point Observatory (MaNGA) survey datacube. MaNGA en- ables us to constrain the origin of double peaks for these sources, and with the IFU data we infer that the most promising origin of double-peaked profiles for LAMOST J074810.95+281349.2 is the `Rotation Dominated + Disturbance' structure.
@article{arxiv.1810.07387,
title = {Double-peaked Narrow Emission-line Galaxies in LAMOST Survey},
author = {M. X. Wang and A. L. Luo and Y. H. Song and S. Y. Shen and S. Feng and L. L. Wang and Y. F. Wang and Y. -B. Li and B. Du and W. Hou and Y. X. Guo and X. Kong and J. N. Zhang},
journal= {arXiv preprint arXiv:1810.07387},
year = {2018}
}