APOGEE Data Releases 13 and 14: Stellar Parameter and Abundance Comparisons 
with Independent Analyses

Jönsson, Henrik; Allende Prieto, Carlos; Holtzman, Jon A.; Feuillet, Diane K.; Hawkins, Keith; Cunha, Katia; Mészáros, Szabolcs; Hasselquist, Sten; Fernández-Trincado, J. G.; García-Hernández, D. A.; Bizyaev, Dmitry; Carrera, Ricardo; Majewski, Steven R.; Pinsonneault, Marc H.; Shetrone, Matthew; Smith, Verne; Sobeck, Jennifer; Souto, Diogo; Stringfellow, Guy S.; Teske, Johanna; Zamora, Olga

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Journal Article

APOGEE Data Releases 13 and 14: Stellar Parameter and Abundance Comparisons with Independent Analyses

MPS-Authors

Jönsson, Henrik
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Allende Prieto, Carlos
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Holtzman, Jon A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Feuillet, Diane K.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Hawkins, Keith
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Cunha, Katia
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Mészáros, Szabolcs
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Hasselquist, Sten
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Fernández-Trincado, J. G.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

García-Hernández, D. A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Bizyaev, Dmitry
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Carrera, Ricardo
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Majewski, Steven R.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Pinsonneault, Marc H.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Shetrone, Matthew
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Smith, Verne
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Sobeck, Jennifer
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Souto, Diogo
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Stringfellow, Guy S.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Teske, Johanna
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Zamora, Olga
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

External Resource

https://ui.adsabs.harvard.edu/abs/2018AJ....156..126J
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Citation

Jönsson, H., Allende Prieto, C., Holtzman, J. A., Feuillet, D. K., Hawkins, K., Cunha, K., et al. (2018). APOGEE Data Releases 13 and 14: Stellar Parameter and Abundance Comparisons with Independent Analyses. The Astronomical Journal, 156.

Cite as: https://hdl.handle.net/21.11116/0000-0005-CCFE-8

Abstract

Data from the SDSS-IV/Apache Point Observatory Galactic Evolution Experiment (APOGEE-2) have been released as part of SDSS Data Releases 13 (DR13) and 14 (DR14). These include high-resolution H-band spectra, radial velocities, and derived stellar parameters and abundances. DR13, released in 2016 August, contained APOGEE data for roughly 150,000 stars, and DR14, released in 2017 August, added about 110,000 more. Stellar parameters and abundances have been derived with an automated pipeline, the APOGEE Stellar Parameter and Chemical Abundance Pipeline (ASPCAP). We evaluate the performance of this pipeline by comparing the derived stellar parameters and abundances to those inferred from optical spectra and analysis for several hundred stars. For most elements—C, Na, Mg, Al, Si, S, Ca, Cr, Mn, Ni—the DR14 ASPCAP analyses have systematic differences with the comparisons samples of less than 0.05 dex (median), and random differences of less than 0.15 dex (standard deviation). These differences are a combination of the uncertainties in both the comparison samples as well as the ASPCAP analysis. Compared to the references, magnesium is the most accurate alpha-element derived by ASPCAP, and shows a very clear thin/thick disk separation, while nickel is the most accurate iron-peak element (besides iron itself).