Feb 7 – 9, 2017
Radisson Hotel Lansing
US/Eastern timezone

Probing Galactic Chemical Evolution with J-PLUS Photometry using Artificial Neural Networks

Feb 7, 2017, 4:45 PM
1h 15m
Radisson Hotel Lansing

Radisson Hotel Lansing

111 N Grand Ave, Lansing, MI 48933
Poster [Main Conference] Poster session

Speaker

Mr Devin Whitten (University of Notre Dame)

Description

We present results for surface temperature, metallicity ([Fe/H]), carbonicity ([C/Fe]) and surface gravity (log g) determinations with preliminary data from the Javalambre Photometric Local Universe Survey (J-PLUS). Spectra with stellar parameters obtained from the SEGUE Stellar Parameter Pipeline (SSPP) were used in conjunction with synthetic magnitudes transformed to the J-PLUS system to train an Artificial Neural Network (ANN). ANNs were then tested using the first J-PLUS science verification set. We discuss the implications of these photometric determinations on the identification of Carbon-Enhanced Metal-Poor stars, Blue Horizontal-Branch stars, and the Metallicity Distribution Function (MDF) of the Galactic Halo in the context of cosmic chemical enrichment and Galaxy formation. We also describe the potential use of this approach for targeting stars of particular interest in future large-scale spectroscopic surveys such as WEAVE and 4MOST.

Primary author

Mr Devin Whitten (University of Notre Dame)

Presentation materials

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