APOGEE Data Releases 13 and 14: Data and Analysis

By J. Holtzman, S. Hasselquist, M. Shetrone, K. Cunha, C. A. Prieto, B. Anguiano, D. Bizyaev, Jo Bovy, A. Casey, B. Edvardsson and 16 more. Astronomical Journal, 2018

215 citations recorded by the source corpus.

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.

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/c68296fee72bb60dc9a9bc6d383fd469076a9140

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

1. D. Schneider
2. C. Conroy
3. Hans-Walter Rix
4. P. Hopkins
5. L. Hernquist
6. M. Cappellari
7. Simon D. M. White
8. M. Blanton

In Instrumentation

1. C. Conroy
2. M. Cappellari
3. Hans-Walter Rix
4. D. Schneider
5. M. Blanton
6. P. Hopkins
7. I. Minchev
8. Jo Bovy

Citations in the corpus

• The Fifteenth Data Release of the Sloan Digital Sky Surveys: First Release of MaNGA-derived Quantities, Data Visualization Tools, and Stellar Library (2018, methodology): “Holtzman et al. (2018) also discusses how results from The Cannon (Ness et al. 2015) are included in DR14 and compares those with the values from ASPCAP.”
• Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18 (2019, methodology): “For the comparison to the (calibrated) ASPCAP metallicity scale, which is both much more precise and accurate than ours (∼0.05 dex; Holtzman et al. 2018), we see that StarHorse tends to determine solar metallicities for the bulk of the APOGEE stars.”