Calendar

Sep
22
Fri
Congresso SIC visite al museo Rif. Chinnici
Sep 22 @ 17:00 – 20:00
Oct
10
Tue
Riunione per lavori al Museo
Oct 10 @ 11:00 – 12:30
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Oct
11
Wed
Sketchtour in OAPA
Oct 11 @ 14:00 – 19:30
Nov
10
Fri
Visita studenti IC “Francesco Minà Palumbo” – Castelbuono
Nov 10 @ 14:00 – 18:00
Nov
13
Mon
WG Machine Learning EXOPA
Nov 13 @ 10:00 – 13:00
Nov
14
Tue
Test Readiness Review – Contratto ESA “Fully Carbon Filters”
Nov 14 @ 9:00 – 17:30
Nov
15
Wed
Seminario: Konstantina Anastasopoulou (INAF), Aula ore 15
Nov 15 @ 15:00 – 16:30

Speaker: Konstantina Anastasopoulou (INAF)
Titolo: EWOCS: The X-ray properties of the Wolf-Rayet stars in the young massive star cluster Westerlund 1

Abstract: Wolf-Rayet (WR) stars are the latest stage in the evolution of very massive stars, before they finally explode as supernovae (SN) or possibly gamma-ray bursts. They exhibit dense and powerful stellar winds that, along with their ultimate death as core-collapse SN, dominate the feedback to the local interstellar medium in star-forming galaxies. Studying in more detail the properties of the short-lived WR phase, will advance our understanding on star-formation processes and will test stellar evolutionary predictions. The best laboratory to study the WR phase is the massive young star cluster Westerlund 1. It is the closest massive star cluster to the Sun, and it contains an impressive large sample of coeval massive stars including the largest population (24) of WR stars in our Galaxy. In this talk, I will present the first results of the EWOCS  (Extended Westerlund 1 and 2 Open Clusters Survey) project on the WR stars in Westerlund 1 based on a 1Msec Chandra/ACIS-I Large Project. With this very deep Chandra survey we are able to unravel the X-ray spectral, colour, and timing properties of the entire WR population and retrieve insights on their X-ray production mechanism. I will discuss these results in the context of different spectral subtypes of WR stars, as well as binarity since the majority of them show clear signs of very hot plasma created in the colliding-wind region of a binary system.

Dec
1
Fri
Visita al Museo
Dec 1 @ 16:45 – 18:45

Referente: Ileana Chinnici

Dec
4
Mon
INCONTRO ONLINE TRA MONIA ROSSI CANDIDATA CDA INAF ED I DIPENDENTI
Dec 4 @ 15:30 – 16:30
Dec
5
Tue
Collegio dei Direttori al Museo
Dec 5 @ 10:00 – 19:30