APOGEE Data Releases 13 and 14: Data and Analysis

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Abstract

The data and analysis methodology used for the SDSS/APOGEE Data Releases 13 and 14 are described, highlighting differences from the DR12 analysis presented in Holtzman et al. Some improvement in the handling of telluric absorption and persistence is demonstrated. The derivation and calibration of stellar parameters, chemical abundances, and respective uncertainties are described, along with the ranges over which calibration was performed. Some known issues with the public data related to the calibration of the effective temperatures (DR13), surface gravity (DR13 and DR14), and C and N abundances for dwarfs (DR13 and DR14) are highlighted. We discuss how results from a data-driven technique, The Cannon, are included in DR14 and compare those with results from the APOGEE Stellar Parameters and Chemical Abundances Pipeline. We describe how using The Cannon in a mode that restricts the abundance analysis of each element to regions of the spectrum with known features from that element leads to Cannon abundances can lead to significantly different results for some elements than when all regions of the spectrum are used to derive abundances.

Detaljer

Författare
  • Jon A. Holtzman
  • Sten Hasselquist
  • Matthew Shetrone
  • Katia Cunha
  • Carlos Allende Prieto
  • Borja Anguiano
  • Dmitry Bizyaev
  • Jo Bovy
  • Andrew Casey
  • Bengt Edvardsson
  • Jennifer A. Johnson
  • Szabolcs Meszaros
  • Verne V. Smith
  • Jennifer Sobeck
  • Olga Zamora
  • S. Drew Chojnowski
  • Jose Fernandez-Trincado
  • Anibal Garcia Hernandez
  • Steven R. Majewski
  • Marc Pinsonneault
  • Diogo Souto
  • Guy S. Stringfellow
  • Jamie Tayar
  • Nicholas Troup
  • Gail Zasowski
Enheter & grupper
Externa organisationer
  • New Mexico State University
  • University of Utah
  • University of Texas at Austin
  • National Observatory Brazil
  • University of Arizona
  • Instituto de Astrofísica de Canarias
  • University of La Laguna (ULL)
  • University of Virginia
  • Macquarie University, Sydney
  • Lomonosov Moscow State University
  • University of Toronto
  • Monash University
  • Ohio State University
  • Eötvös Loránd University
  • University of Washington
  • University of Burgundy - Franche-Comté
  • University of Concepción
  • University of Colorado
  • Salisbury University
  • Uppsala universitet
  • National Optical Astronomy Observatory
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Astronomi, astrofysik och kosmologi

Nyckelord

Originalspråkengelska
Artikelnummer125
TidskriftAstronomical Journal
Volym156
Utgåva nummer3
StatusPublished - 2018
PublikationskategoriForskning
Peer review utfördJa