Astronomy and Astrophysics – Astrophysics – Galaxy Astrophysics
Scientific paper
2009-02-25
Astronomy and Astrophysics
Astrophysics
Galaxy Astrophysics
6 pages, 4 figures; accepted by A&A
Scientific paper
A massive objects such as a globular cluster passing through the disk of a galaxy can trigger star formation. We test the hypothesis that the most massive globular cluster in the Galaxy, $\omega$ Centauri, which crossed the disk approximately $24\pm2$ Myr ago, may have triggered the formation of the open clusters Stephenson 2 and BDSB 122. The orbits of $\omega$ Centauri, Stephenson 2 and BDSB 122 are computed for the three-component model of Johnston, Hernquist & Bolte, which considers the disk, spheroidal and halo gravitational potentials. With the re-constructed orbit of $\omega$ Centauri, we show that the latest impact site is consistent, within important uncertainties, with the birth-site of the young massive open clusters BDSB 122 and Stephenson 2. Within uncertainties, this scenario is consistent with the time-scale of their backwards motion in the disk, shock wave propagation and delay for star formation. Together with open cluster formation associated to density waves in spiral arms, the present results are consistent with the idea that massive globular clusters as additional progenitors of open clusters, the massive ones in particular.
Bica Eduardo
Bonatto Charles
Rodrigues Irapuan
Salerno Gustavo
No associations
LandOfFree
On the possible generation of the young massive open clusters Stephenson2 and BDSB122 by Omega Centauri 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 On the possible generation of the young massive open clusters Stephenson2 and BDSB122 by Omega Centauri, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the possible generation of the young massive open clusters Stephenson2 and BDSB122 by Omega Centauri will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-158192