LEMONY--a Library of Empirical Medium-resolution spectra by Observations with the NAOC Xinglong 2.16\,m and YNAO Gaomeigu 2.4\,m telescopes

Abstract

This study expands the coverage and improves the homogeneity of the distribution of MILES template stars in the parameter space, as well as extends the wavelength coverage of the template spectra to the far red beyond the Ca\,{\sc{ii}} triplet. To achieve this we have carried out a major observational campaign using the OMR long-slit spectrograph mounted on the NAOC 2.16\,m telescope and the YFOSC long-slit spectrograph mounted on the YNAO 2.4\,m telescope. The original sample is based on the MILES library, supplemented by 918 stars selected from PASTEL database. In total, 822 OMR and 1,324 YFOSC spectra, covering respectively the wavelength ranges $\lambda \lambda$3800--5180 and $\lambda \lambda$5150--9000, have been collected and reduced. The spectra have a mean resolution FWHM (full-width at half-maximum) of $\sim 3.3$\,Å and are wavelength- and flux-calibrated to an accuracy of $\sim 20$\,km\,s${}^{-1}$ and $\sim 5$\,per\,cent, respectively. The spectra are further corrected for systematic errors in the wavelength calibration to an accuracy of $\sim 4$\,km\,s${}^{-1}$ by cross-correlating with the theoretical spectra. Almost all the spectra have an average signal to noise ratio (SNR) better than 100 per pixel. Combined with the MILES spectra, there are now 1,731, 1,542, 1,324 and 1,273 stars with spectra covering respectively $\lambda \lambda$3800--5180, $\lambda \lambda$3800--7500, $\lambda \lambda$5150--9000 and $\lambda \lambda$3800--9000. This paper describes our template star selection, the observation and data reduction, and presents the reduced spectra collected hitherto.

arXiv comment17 pages, 20 figures, MNRAS, accepted

References in corpus (35)

• Stellar population synthesis at the resolution of 2003
• Correcting for the Effects of Interstellar Extinction
• MILES: A Medium resolution INT Library of Empirical Spectra
• The Sixth Data Release of the Sloan Digital Sky Survey
• SEGUE: A Spectroscopic Survey of 240,000 stars with g=14-20
• The Radial Velocity Experiment (RAVE): first data release
• The First Data Release (DR1) of the LAMOST general survey
• An updated MILES stellar library and stellar population models
• The Indo-U.S. Library of Coude Feed Stellar Spectra
• LAMOST Experiment for Galactic Understanding and Exploration (LEGUE) The survey science plan
• The SEGUE Stellar Parameter Pipeline. I. Description and Initial Validation Tests
• A database of high and medium-resolution stellar spectra
• STELIB: a library of stellar spectra at R~2000
• A library of high resolution synthetic stellar spectra from 300nm to 1.8 micron with solar and alpha-enhanced composition
• Empirical extinction coefficients for the GALEX, SDSS, 2MASS and WISE passbands
• An extensive library of 2500-10500 Ang synthetic spectra
• Empirical calibration of the near-IR Ca II triplet - I. The stellar library and index definition
• Pulkovo Compilation of Radial Velocities for 35495 Hipparcos Stars in a Common System
• A Library of Theoretical Ultraviolet Spectra of Massive, Hot Stars for Evolutionary Synthesis
• MIUSCAT: extended MILES spectral coverage. I. Stellar populations synthesis models
• The PASTEL catalogue of stellar parameters
• Automatic Determination of Stellar Atmospheric Parameters and Construction of Stellar Spectral Templates of the Guoshoujing Telescope (LAMOST)
• The LAMOST Stellar Parameter Pipeline at Peking University --- LSP3
• Gaia FGK benchmark stars: abundances of alpha and iron-peak elements
• A High-Resolution Stellar Library for Evolutionary Population Synthesis
• LAMOST Spectroscopic Survey of the Galactic Anti-centre (LSS-GAC): target selection and the first release of value-added catalogues
• The X-shooter Spectral Library (XSL): I. DR1. Near-ultraviolet through optical spectra from the first year of the survey
• The Extended IRTF Spectral Library: Expanded coverage in metallicity, temperature, and surface gravity
• Estimating stellar atmospheric parameters, absolute magnitudes and elemental abundances from the LAMOST spectra with Kernel-based Principal Component Analysis
• Empirical metallicity-dependent calibrations of effective temperature against colours for dwarfs and giants based on interferometric data
• The RAVE catalogue of stellar elemental abundances: first data release
• Testing the Accuracy of Synthetic Stellar Libraries
• MILES extended: Stellar population synthesis models from the optical to the infrared
• A library of high resolution Kurucz spectra in the wavelength range 3000 - 10000 AA
• BaSeL: a library of synthetic spectra and colours for GAIA

Cited by in corpus (2)

• A Catalog of RV Variable Star Candidates from LAMOST
• The X-shooter Spectral Library (XSL): Data Release 3