Issue |
A&A
Volume 566, June 2014
|
|
---|---|---|
Article Number | A6 | |
Number of page(s) | 16 | |
Section | Galactic structure, stellar clusters and populations | |
DOI | https://doi.org/10.1051/0004-6361/201323030 | |
Published online | 29 May 2014 |
Isolated massive stars in the Galactic center: The dynamic contribution from the Arches and Quintuplet star clusters
1 Argelander Institut für Astronomie, Universität Bonn, Auf dem Hügel 71, 53121 Bonn, Germany
e-mail: mhabibi@astro.uni-bonn.de; astolte@astro.uni-bonn.de
2 Technische Universität Berlin, Zentrum für Astronomie und Astrophysik, Hardenbergstraße 36, 10623 Berlin, Germany
e-mail: harfst@astro.physik.tu-berlin.de
3 Member of the International Max Planck Research School (IMPRS) for Astronomy and Astrophysics at the Universities of Bonn and Cologne, Germany
Received: 11 November 2013
Accepted: 11 March 2014
Recently, more than 100 Wolf-Rayet and OB stars were identified in the Galactic center. About a third of these sources are not spatially associated with any of the known star clusters in this region. We probe the distribution of drifted sources in numerical models of the massive clusters in the Galactic center and compare it to the observed distribution of isolated massive sources in this region. We find that stars as massive as 100 M⊙ drift away from the center of each cluster by up to ~ 60 pc using the cluster models. Our best model reproduces ~ 60% of the known isolated massive stars out to 80 pc from the center of the Arches cluster. This number increases to 70–80% when we only consider the region that is ~ 20 pc from the Arches cluster.
Key words: Galaxy: center / open clusters and associations: individual: Arches / stars: early-type / stars: Wolf-Rayet / open clusters and associations: individual: Quintuplet / methods: numerical
© ESO, 2014
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.