LAMOST staller parameters pipeline for medium resolution spectra

A-Li Luo; Jia-Jun Chen; Wen Hou; Fang Zuo; Bing Du; Yi-Han Song; Xiao Kong; Rui Wang; Yan Lu; Yong-Heng Zhao

doi:10.1117/12.2312433

6 July 2018 LAMOST staller parameters pipeline for medium resolution spectra

A-Li Luo, Jia-Jun Chen, Wen Hou, Fang Zuo, Bing Du, Yi-Han Song, Xiao Kong, Rui Wang, Yan Lu, Yong-Heng Zhao

Proceedings Volume 10707, Software and Cyberinfrastructure for Astronomy V; 107072B (2018) https://doi.org/10.1117/12.2312433
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

A new set of gratings with medium resolution (R ∼ 7500) has been mounted on the LAMOST spectrographs, and the wavelength windows range in 490 ∼ 540nm and 640 ∼ 690 nm respectively for blue and red spectrograph arm. Commissioning observation has been conducted to test the survey based on 16 spectrographs and 4000 fibers. Meanwhile, a spectral analysis pipeline has been developing to get more precise stellar parameters, radial velocities and abundance of chemical elements. Instrument profiles are calculated for each fiber at each exposure according to emission lines both from arc lamp. A template grid spectra with R ∼ 7500 for fundamental parameter (Teff, logg, and [Fe/H] ) are selected from Elodie. During the commissioning observation, each star have been visited for several times, and a fraction targets include APOGEE, Kepler and PASTEL objects which have high precisely measured parameters. With the commissioning spectra, we can understand instrument performance, intrinsic precision of repeat observations, and the accuracy of the pipeline.

Citation Download Citation

A-Li Luo, Jia-Jun Chen, Wen Hou, Fang Zuo, Bing Du, Yi-Han Song, Xiao Kong, Rui Wang, Yan Lu, and Yong-Heng Zhao "LAMOST staller parameters pipeline for medium resolution spectra", Proc. SPIE 10707, Software and Cyberinfrastructure for Astronomy V, 107072B (6 July 2018); https://doi.org/10.1117/12.2312433

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