New H-band Stellar Spectral Libraries for the SDSS-III/APOGEE survey

Abstract

The Sloan Digital Sky Survey--III (SDSS--III) Apache Point Observatory Galactic Evolution Experiment (APOGEE) has obtained high resolution (R $\sim$ 22,500), high signal-to-noise ratio ($>$ 100) spectra in the H$-$band ($\sim$1.5$-$1.7 $\mu$m) for about 146,000 stars in the Milky Way galaxy. We have computed spectral libraries with effective temperature ($T{}_{\mathrm{eff}}$) ranging from 3500 to 8000 K for the automated chemical analy\-sis of the survey data. The libraries, used to derive stellar parameters and abundances from the APOGEE spectra in the SDSS--III data release 12 (DR12), are based on ATLAS9 model atmospheres and the ASS$\epsilon$T spectral synthesis code. We present a second set of libraries based on MARCS model atmospheres and the spectral synthesis code Turbospectrum. The ATLAS9/ASS$\epsilon$T ($T{}_{\mathrm{eff}}$ = 3500$-$8000 K) and MARCS/Turbospectrum ($T{}_{\mathrm{eff}}$ = 3500$-$5500 K) grids cover a wide range of metallicity ($-$2.5 $\le$ [M/H] $\le$ $+$0.5 dex), surface gravity (0 $\le$ log $g$ $\le$ 5 dex), microturbulence (0.5 $\le$ $\xi$ $\le$ 8 km~s${}^{-1}$), carbon ($-$1 $\le$ [C/M] $\le$ $+$1 dex), nitrogen ($-$1 $\le$ [N/M] $\le$ $+$1 dex), and $\alpha$-element ($-$1 $\le$ [$\alpha$/M] $\le$ $+$1 dex) variations, having thus seven dimensions. We compare the ATLAS9/ASS$\epsilon$T and MARCS/Turbospectrum libraries and apply both of them to the analysis of the observed H$-$band spectra of the Sun and the K2 giant Arcturus, as well as to a selected sample of well-known giant stars observed at very high-resolution. The new APOGEE libraries are publicly available and can be employed for chemical studies in the H$-$band using other high-resolution spectrographs.

45 pages, 11 figures; accepted for publication in the Astronomical Journal

References in corpus (7)

• A grid of MARCS model atmospheres for late-type stars I. Methods and general properties
• The 2.5 m Telescope of the Sloan Digital Sky Survey
• Astrophysics Source Code Library
• A new implementation of the infrared flux method using the 2MASS catalogue
• APOGEE: The Apache Point Observatory Galactic Evolution Experiment
• Center-to-Limb Variation of Solar 3-D Hydrodynamical Simulations
• Geometry of giant star model atmospheres: A consistency test

Cited by in corpus (62)

• APOGEE Data and Spectral Analysis from SDSS Data Release 16: Seven Years of Observations Including First Results from APOGEE-South
• Target Selection for the SDSS-IV APOGEE-2 Survey
• The age-metallicity structure of the Milky Way disk
• APOGEE Chemical Abundance Patterns of the Massive Milky Way Satellites
• Disentangling the Galactic Halo with APOGEE: I. Chemical and Kinematical Investigation of Distinct Metal-Poor Populations
• The First APOKASC Catalog of Kepler Dwarf and Subgiant Stars
• Weighing the stellar constituents of the Galactic halo with APOGEE red giant stars
• The Chemical Compositions of Accreted and {\it in situ} Galactic Globular Clusters According to SDSS/APOGEE
• APOGEE Chemical Abundances of Globular Cluster Giants in the Inner Galaxy
• APOGEE Chemical Abundances of the Sagittarius Dwarf Galaxy
• Chemical Abundances of Main-Sequence, Turnoff, Subgiant and red giant Stars from APOGEE spectra II: Atomic Diffusion in M67 Stars
• Metallicity and $\alpha$-element Abundance Gradients along the Sagittarius Stream as Seen by APOGEE
• Constraining Metallicity-dependent Mixing and Extra Mixing using [C/N] in Alpha-Rich Field Giants
• Rapid Rotation of Low-Mass Red Giants Using APOKASC: A Measure of Interaction Rates on the Post-main-sequence
• A Tale of Two Disks: Mapping the Milky Way with the Final Data Release of APOGEE
• Chemodynamics of newly identified giants with globular cluster like abundance patterns in the bulge, disk, and halo of the Milky Way
• BACCHUS Analysis of Weak Lines in APOGEE Spectra (BAWLAS)
• Two Groups of Red Giants with Distinct Chemical Abundances in the Bulge Globular Cluster NGC 6553 Through the Eyes of APOGEE
• Exploring the Galactic Warp Through Asymmetries in the Kinematics of the Galactic Disk
• Chemical Cartography with APOGEE: Mapping Disk Populations with a Two-Process Model and Residual Abundances
• The Bulge Metallicity Distribution from the APOGEE Survey
• Origin of $\alpha$-rich young stars: clues from C, N and O
• Detailed Chemical Abundances for a Benchmark Sample of M Dwarfs from the APOGEE Survey
• Identifying Sagittarius Stream Stars By Their APOGEE Chemical Abundance Signatures
• The stellar velocity distribution function in the Milky Way galaxy
• Baade's window with APOGEE: Metallicities, ages and chemical abundances
• CAPOS: The bulge Cluster APOgee Survey I. Overview and initial ASPCAP results
• APOGEE [C/N] Abundances Across the Galaxy: Migration and Infall from Red Giant Ages
• Chemical Abundances in a Sample of Red Giants in the Open Cluster NGC 2420 from APOGEE
• Galactic ArchaeoLogIcaL ExcavatiOns (GALILEO) I. An updated census of APOGEE N-rich giants across the Milky Way
• Know thy star, know thy planet: Chemo-kinematically characterizing TESS targets
• sMILES: A Library of Semi-Empirical MILES Stellar Spectra with Variable [$\alpha$/Fe] Abundances
• The Open Cluster Chemical Abundances and Mapping Survey: VII. APOGEE DR17 [C/N]-Age Calibration
• 12C/13C isotopic ratios in red-giant stars of the open cluster NGC 6791
• An eccentric Brown Dwarf eclipsing an M dwarf
• CAPOS: the bulge Cluster APOgee Survey II. The Intriguing "Sequoia" Globular Cluster FSR 1758
• Is Thermohaline Mixing the Full Story? Evidence for Separate Mixing Events near the Red Giant Branch Bump
• The Influence of 10 Unique Chemical Elements in Shaping the Distribution of Kepler Planets
• CAPOS: The bulge Cluster APOgee Survey III. Spectroscopic Tomography of Tonantzintla 2
• Stellar atmospheric parameters of FGK-type stars from high-resolution optical and near-infrared CARMENES spectra
• APOGEE-2S Discovery of Light- and Heavy-Element Abundance Correlations in the Bulge Globular Cluster NGC 6380
• An enquiry on the origins of N-rich stars in the inner Galaxy basedon APOGEE chemical compositions
• Spinning up the Surface: Evidence for Planetary Engulfment or Unexpected Angular Momentum Transport?
• APOGEE-2S view of the globular cluster Patchick 125 (Gran 3). New metallicity and elemental abundances from high-resolution spectroscopy
• Characterizing Observed Extra Mixing Trends in Red Giants using the Reduced Density Ratio from Thermohaline Models
• Galactic ArchaeoLogIcaL ExcavatiOns (GALILEO) II. t-SNE Portrait of Local Fossil Relics and Structures
• The K2 M67 Study: Precise Mass for a Turnoff Star in the Old Open Cluster M67
• Chemical Cartography with APOGEE: Two-process Parameters and Residual Abundances for 288,789 Stars from Data Release 17
• APOGEE-2 Discovery of a Large Population of Relatively High-Metallicity Globular Cluster Debris
• Near-infrared chemical abundances of stars in the Sculptor dwarf galaxy
• On the Hunt for the Origins of the Orphan--Chenab Stream: Detailed Element Abundances with APOGEE and Gaia
• Evidence of Deep Mixing in IRS 7, a Cool Massive Supergiant Member of the Galactic Nuclear Star Cluster
• Unveiling the chemical fingerprint of phosphorus-rich stars I. In the infrared region of APOGEE-2
• Carbon-enhanced metal-poor stars in the SDSS-APOGEE database
• CAPOS: The bulge Cluster APOgee Survey V. Elemental abundances of the bulge globular cluster HP 1
• A Galactic Self-Portrait: Density Structure and Integrated Properties of the Milky Way Disk
• Chemo-Dynamical Tagging in the Outskirts: The Origins of Stellar Substructures in the Magellanic Clouds
• APOGEE-2S Mg-Al anti-correlation of the Metal-Poor Globular Cluster NGC 2298
• CAPOS: The bulge Cluster APOGEE Survey VI. Characterizing multiple stellar populations and chemical abundances in the bulge globular cluster NGC 6569
• Characterization of low-mass companions to $\text{Kepler}$ objects of interest observed with APOGEE-N
• Young alpha-enriched giant stars in the solar neighbourhood
• APOGEE chemical abundances of stars in the MW satellites Fornax, Sextans, Draco and Carina