A sample of galaxy pairs identified from the LAMOST spectral survey and the Sloan Digital Sky Survey

Abstract

A small fraction($<10\%$) of SDSS main sample galaxies(MGs) have not been targeted with spectroscopy due to the the fiber collision effect. These galaxies have been compiled into the input catalog of the LAMOST extra-galactic survey and named as the complementary galaxy sample. In this paper, we introduce the project and the status of the spectroscopies of the complementary galaxies in the first two years of the LAMOST spectral survey(till Sep. of 2014). Moreover, we present a sample of 1,102 galaxy pairs identified from the LAMOST complementary galaxies and SDSS MGs, which are defined as that the two members have a projected distance smaller than 100 kpc and the recessional velocity difference smaller than 500 $\mathrm{km}{\mathrm{s}}^{-1}$. Compared with the SDSS only selected galaxy pairs, the LAMOST-SDSS pairs take the advantages of not being biased toward large separations and therefor play as a useful supplement to the statistical studies of galaxy interaction and galaxy merging.

16 pages, 7 figures, RAA accepted. The on-line pair catalog is temporarily available at http://cluster.shao.ac.cn/~shen/LEGAS/LSpair/LSpair_pub.cat

References in corpus (8)

• The First Data Release (DR1) of the LAMOST general survey
• Galaxy Pairs in the Sloan Digital Sky Survey I: Star Formation, AGN Fraction, and the Luminosity/Mass-Metallicity Relation
• Galaxy Groups in the SDSS DR4: II. halo occupation statistics
• Star Formation in Close Pairs Selected from the Sloan Digital Sky Survey
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• The Luminosity Dependence of the Galaxy Merger Rate
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• A Search for Double-peaked narrow emission line Galaxies and AGNs in the LAMOST DR1

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• CatNorth: An Improved Gaia DR3 Quasar Candidate Catalog with Pan-STARRS1 and CatWISE
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• Compact Groups of Galaxies in Sloan Digital Sky Survey and LAMOST Spectral Survey. II. Dynamical Properties of Isolated and Embedded Groups
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• The Velocity Map Asymmetry of Ionized Gas in MaNGA. I. The Catalog and General Properties
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• Stellar populations of galaxies in the LAMOST spectral survey
• A Chandra X-ray Survey of Optically Selected Close Galaxy Pairs: Unexpectedly Low Occupation of Active Galactic Nuclei
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