Sumários
Star Clusters as Simple Stellar Populations (II)
21 Março 2022, 08:30 • André Maria da Silva Dias Moitinho de Almeida
- Globular clusters: Not so simple stellar populations; their spatial and metallicity distribution, HRD and multiple populations
- Embedded clusters and the pre-main sequence phase
Analysing resolved stellar populations using Gaia data and theoretical models (II)
14 Março 2022, 11:00 • André Maria da Silva Dias Moitinho de Almeida
Jupyter-notebook exercise
# Reading the data tables in python
- simple basic approach (requires deleting and editing lines by hand)
- sophisticated approaches (fully automatic reading)
# First look plots
- Isochrones: selecting ages; plotting
- cluster members
- Fine tunning plots
Star Clusters as Simple Stellar Populations (I)
14 Março 2022, 08:30 • André Maria da Silva Dias Moitinho de Almeida
- Types of clusters: embedded, open, globular
- Some characteristics: numbers of stars, sizes, ages, metallicity
- HR diagrams of clusters
- Context in the Milky Way and in other galaxies
Additional reading:
- Chap 9 - Salaris & Cassisi
- Chap 2, 4, 5.1 - Greggio & Renzini
Analysing resolved stellar populations using Gaia data and theoretical models (I)
7 Março 2022, 11:00 • André Maria da Silva Dias Moitinho de Almeida
# Data Retrieval:
- Isochrones from the "Padova" models web interface
- Cluster data from: Vizier and the Gaia archive
# Inspection of cluster data with Topcat
- Photometric diagrams; astrometric diagrams
- Identification and selection of cluster members
Introduction to Stellar populations / Stellar evolution recap
7 Março 2022, 08:30 • André Maria da Silva Dias Moitinho de Almeida
# Introduction to Stellar populations (cont)
- Observational tools
- Stellar populations in the Milky Way
- Quick look of colour-magnitude diagrams of nearby dwarf galaxies
- Simple stellar populations
- Questions addressed in this course
# Stellar evolution recap
- HR Diagram and colour-magnitude diagrams of the Milky Way
- Stellar evolutionary tracks
- Mass dependent lifetimes
- Isochrones
- The Initial Mass Function
Additional reading:
- Chap 1 - Greggio & Renzini
- Chap 13 - Carroll & Ostlie