XI La Plata International School (LAPIS) on Astronomy and Geophysics

07-10/Apr/2025
https://congresos.unlp.edu.ar/xilapis


Hands-on activities - Day 1

*This material was adapted from the S-PLUS workshop held in SAB 2024, and presented in XI LAPIS 2025. Prepared in collaboration with Eduardo Lacerda (IAG/USP), Gustavo Schwarz (Poli/USP) and Lilianne Nakazono (IF/USP)
The proposed exercise here will guide you through two simple examples using the S-PLUS DR4. For the execution of this hands-on, you will follow some of the documentation and code examples given during the previous lectures. In particular, we will use LSDB, splusdata and some common Python libraries like NumPy (for calculations) and Matplotlib (for plots). In addition to the mentioned technical tools, the exercise require data from the the S-PLUS DR4, associated VACs and the GAIA DR3 catalog.

Proposed science cases:

  1. Create a HR Diagram for a globular cluster identified in S-PLUS DR4/PSF catalog, crossmatching with GAIA DR3

  2. Create an observational CMD (e.g., g-r vs r) diagram for galaxies, and visualize some early and late type galaxies

  3. Measure radial profiles of galaxies from astronomical images obtained through splusdata




Lectures

Lecture
08/Apr/2025 - Lecture 1 - Application for stellar astronomy
08/Apr/2025 - Lecture 2 - Application for extragalactic astronomy




Hands-on Activities


Suggestion: clone the whole SAB24 S-PLUS workshop from github:
https://github.com/felipefer42/XLVII_SAB_workshop


Activities
Colab jupyter notebook - Hands-on 1.1: Globular Cluster
Colab jupyter notebook - Hands-on 2.1: Galaxies CMD
Colab jupyter notebook - Hands-on 2.2: Galaxy radial profile




References

Mendes de Oliveira et al. (2019) | MNRAS, v.489, p.241
The Southern Photometric Local Universe Survey (S-PLUS): improved SEDs, morphologies, and redshifts with 12 optical filters

Herpich et al. (2024) | A&A, v.689, id.A249
The Fourth S-PLUS Data Release: 12-filter photometry covering ∼3000 square degrees in the southern hemisphere

Gaia Collaboration et al. (2023) | A&A, v.674, id.A1
Gaia Data Release 3. Summary of the content and survey properties

Bailer-Jones et al. (2021) | AJ, v.161, id.147
Estimating Distances from Parallaxes. V. Geometric and Photogeometric Distances to 1.47 Billion Stars in Gaia Early Data Release 3

Hartmann et al. (2022) | MNRAS, v.515, p.4191
S-PLUS: exploring wide field properties of multiple populations in galactic globular clusters at different metallicities

Thainá-Batista et al. (2023) | MNRAS, v.526, p.1874
Estimating stellar population and emission-line properties in S-PLUS galaxies