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RESEARCH PRODUCT
APOGEE Data Releases 13 and 14: Data and Analysis
Anibal Garcia HernandezAnibal Garcia HernandezVerne V. SmithKatia CunhaMatthew ShetroneMarc H. PinsonneaultOlga ZamoraOlga ZamoraGuy S. StringfellowSten HasselquistSten HasselquistHenrik JönssonJon A. HoltzmanNicholas W. TroupJamie TayarAndrew R. CaseySteven R. MajewskiJennifer A. JohnsonBengt EdvardssonDiogo SoutoJo BovyGail ZasowskiDmitry BizyaevDmitry BizyaevBorja AnguianoBorja AnguianoS. Drew ChojnowskiCarlos Allende PrietoCarlos Allende PrietoSzabolcs MészárosJosé G. Fernández-trincadoJosé G. Fernández-trincadoJennifer Sobecksubject
010308 nuclear & particles physicsLibrary scienceFOS: Physical sciencesAstronomy and Astrophysics01 natural sciencesAstrophysics - Astrophysics of GalaxiesAstrophysics - Solar and Stellar AstrophysicsSpace and Planetary ScienceAstrophysics of Galaxies (astro-ph.GA)0103 physical sciencesNational laboratoryAstrophysics - Instrumentation and Methods for Astrophysics[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]010303 astronomy & astrophysicsInstrumentation and Methods for Astrophysics (astro-ph.IM)ComputingMilieux_MISCELLANEOUSSolar and Stellar Astrophysics (astro-ph.SR)Mathematicsdescription
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 (2015). 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 (Casey 2016), are included in DR14, and compare those with results from the APOGEE Stellar Parameters and Chemical Abundances Pipeline (ASPCAP). 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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-09-01 |