Lunch talk on Apr. 15, 2020

Calibration of the J-PLUS survey to a few mmag precision and implications  

Speaker: Haibo Yuan (BNU)

Venue: Video conference

Time: 12:30 PM, Wednesday, April 15, 2020

Abstract: 

The Javalambre-Photometric Local Universe Survey, J-PLUS, is an on-going wide-field imaging survey, using a set of 12 filters. Seven intermediate and narrow band filters are dedicated to probe key stellar spectral features that allow to retrieve very accurate spectral energy distributions for more than 5 millions of stars in our Galaxy. In the first part of the talk, I will present our work on calibrating the J-PLUS DR1 data to a few mmag precision for all the filters, with the Stellar Color Regression method by combining datasets of the LAMOST and Gaia. In the seond part, I will focus on capabilities of the J-PLUS filters in deriving a number of stellar parameters, including effective temperature, surface gravity, [Fe/H], [a/Fe], [C/Fe], [N/Fe], [Mg/Fe] and [Ca/Fe] abundances.