SHI, Zhi-Xin; LUO, A-Li; COMTE, Georges; CHEN, Xiao-Yan; WEI, Peng; ZHAO, Yong-Heng; WU, Fu-Chao; ZHANG, Yan-Xia; SHEN, Shi-Yin; YANG, Ming; WU, Hong; WU, Xue-Bing; ZHANG, Hao-Tong; LEI, Ya-Juan; ZHANG, Jian-Nan; WANG, Ting-Gui; JIN, Ge; ZHANG, Yong

doi:10.1088/1674-4527/14/10/003

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SHI, Zhi-Xin

LUO, A-Li

COMTE, Georges
Laboratoire d'Astrophysique de Marseille [LAM]

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Research in Astronomy and Astrophysics. 2014-10, vol. 14, n° 10, p. 1234--1250

IOP Publishing

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The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) has released more than two million spectra, which provide the opportunity to search for double-peaked narrow emission line (NEL) galaxies and active galactic nuclei (AGNs). The double-peaked narrow-line profiles can be well modeled by two velocity components, respectively blueshifted and redshifted with respect to the systemic recession velocity. This paper presents 20 double-peaked NEL galaxies and AGNs found from LAMOST DR1 using a search method based on a multi-Gaussian fit of the narrow emission lines. Among them, ten have already been published by other authors, either listed as genuine double-peaked NEL objects or as asymmetric NEL objects, and the remaining ten are original discoveries. We discuss some possible origins for the double-peaked narrow-line features, such as interaction between jet and narrow line regions, interaction with companion galaxies, and black hole binaries. Spatially resolved optical imaging and/ or follow-up observations in other spectral bands are needed to further discuss the physical mechanisms at work.< Leer menos

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A search for double-peaked narrow emission line galaxies and AGNs in the LAMOST DR1

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