Tag: Westerlund 1

X-ray analysis of the Wolf Rayet of Westerlund 1. The study: “EWOCS-II: X-ray properties of the Wolf-Rayet stars in the young Galactic super star cluster Westerlund 1” of K. Anastasopoulou (INAF-OAPA/CfA) appeared on A&A

Ricerca

Massive stars live short and violent lives. Mainly during the later stages of their evolution, these stars undergo significant changes in their structure and lose a large fraction of their initial mass into the surrounding environment as stellar winds. In particular, during the Wolf-Rayet phase, which lasts only a few hundred thousand years, massive stars eject their outer layers, which

» Read more
, , , , ,

The super star cluster Westerlund 1 observed in X-rays. The study: “EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Westerlund 1 and 2 Open Clusters Survey” of M. G. Guarcello (INAF-OAPA) recently appeared on A&A

Ricerca

Stellar clusters are important targets for studying stellar evolution and, in the case of the youngest star clusters, the products of the star and planet formation processes. Our galaxy hosts a rich population of young stellar clusters, typically with masses of a few hundred solar masses. In the solar neighborhood, for instance, there are only a few young clusters with

» Read more
, , , ,

Two cycles, two programs. The astronomers of the INAF – OAPA will study the star formation in extreme environments wth JWST

Ricerca

The formation of stars and planets results from the complex interplay of various factors and agents: the collapse of the cloud due to its own gravitational force, its internal turbulence and magnetic effects, the evolution of star clusters formed within, and the interactions among young stars within these clusters, as well as the influence of their radiation on the surrounding

» Read more
, , , , , , ,

Completed the Chandra/ACIS-I observations of the starburst cluster Westerlund 1 as part of the EWOCS (Extended Westerlund One Chandra Survey) project.

Ricerca

The amount of gas that is converted into stars by the star formation process is described by the star formation rate. For instance, in the Milky Way today between 0.7 and 1.5 solar masses of gas are converted into stars each year. However, this a mean value across our Galaxy, since locally clouds can start forming stars at higher rates

» Read more
, , , , , , , , , , , , , , , ,

The program “Testing protoplanetary disk evolution and brown dwarf formation in starburst: NIRCAM and MIRI observations of the young cluster Westerlund 1” of M. G. Guarcello (INAF – OAPA) is among the accepted proposals of the JWST Cycle 1

Ricerca

The James Webb Telescope (JWST) will be the most complex and powerful telescope ever launched into space. Built by a consortium formed by NASA, ESA, and the Canadian Space Agency (CSA), thanks to its primary mirror with a diameter of 6.5 meters (for comparison, the mirror of the Hubble Space Telescope has a diameter of 2.5 meters) and its four

» Read more
, , , , , , , , , , , , , ,

First light for the EWOCS (Extensive Westerlund One Chandra Survey) project

Ricerca

On June 2019, the panel for the evaluation of the proposals for observations with the NASA telescope Chandra, operating in the X-rays, which met up in Boston, has approved the Large Project: “Star formation in starburst: a deep ACIS-I observation of Westerlund 1“, led by the astronomer Mario Giuseppe Guarcello – INAF Astronomical Observatory of Palermo. More details on the

» Read more
, , , , , , ,