Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010apj...721..469j&link_type=abstract
The Astrophysical Journal, Volume 721, Issue 1, pp. 469-477 (2010).
Astronomy and Astrophysics
Astronomy
2
Open Clusters And Associations: General, Open Clusters And Associations: Individual: Ic 2391 Ic 2602 Ucl Lcc Us Β Pictoris Tw Hya Association Η And Epsilon Chamaeleontis, Stars: Individual: Hip 46950 Hip 48943 Hip 69491 Hip 76013 Hip 82808
Scientific paper
We address the question of identifying possible past supernovae events taking place in the region of the Scorpius-Centaurus (Sco-Cen) OB association based on stars proposed by Hoogerwerf et al. With this purpose, we obtained a time series of high-resolution spectra of six stars (HIP 42038, HIP 46950, HIP 48943, HIP 69491, HIP 76013, and HIP 82868) which, according to Hoogerwerf et al., may have been runaway stars with origins in the region of the Sco-Cen association. This also includes the nearby young open clusters IC 2391 and IC 2602. If confirmed, such supernovae events could, in principle, have played a role in triggering the formation of some small stellar groups thought to be associated with the Sco-Cen association. Our analysis shows that, except for HIP 48943, the remaining stars are spectroscopic binary systems. For HIP 46950 and HIP 69491, this was already noted by other authors. Our high-resolution spectra allowed us to obtain the radial velocities for all the stars which, combined with their proper motions and parallaxes from Hipparcos, provide a means to investigate, by retracing their orbits, if the Sco-Cen region was, in fact, the origin of these stars. We find that none of these systems originated in the Sco-Cen region. Exploring the possibility that the birthplace of the studied stars occurred in the clusters IC 2391 and IC 2602, we noticed that at the epoch of 2-3 Myr ago these clusters were at a distance comparable with their tidal radii.
de La Reza Ramiro
Drake Natalia A.
Jilinski Evgueni
Ortega Vladimir G.
No associations
LandOfFree
A Dynamical Study of Suspected Runaway Stars as Traces of Past Supernova Explosions in the Region of the Scorpius-Centaurus OB Association does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A Dynamical Study of Suspected Runaway Stars as Traces of Past Supernova Explosions in the Region of the Scorpius-Centaurus OB Association, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Dynamical Study of Suspected Runaway Stars as Traces of Past Supernova Explosions in the Region of the Scorpius-Centaurus OB Association will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1558247