Astrophysics
arXiv:astro-ph/0009470 (astro-ph)
[Submitted on 28 Sep 2000 (v1), last revised 13 Feb 2001 (this version, v2)]
Title:The Formation of a Bound Star Cluster: From the Orion Nebula Cluster to the Pleiades
View PDFAbstract: (shortened) Direct N-body calculations are presented of the formation of Galactic clusters using GasEx, which is a variant of the code Nbody6. The calculations focus on the possible evolution of the Orion Nebula Cluster (ONC) by assuming that the embedded OB stars explosively drove out 2/3 of its mass in the form of gas about 0.4 Myr ago. A bound cluster forms readily and survives for 150 Myr despite additional mass loss from the large number of massive stars, and the Galactic tidal field. This is the very first time that cluster formation is obtained under such realistic conditions. The cluster contains about 1/3 of the initial 10^4 stars, and resembles the Pleiades Cluster to a remarkable degree, implying that an ONC-like cluster may have been a precursor of the Pleiades. This scenario predicts the present expansion velocity of the ONC, which will be measurable by upcoming astrometric space missions (DIVA and GAIA). These missions should also detect the original Pleiades members as an associated expanding young Galactic-field sub-population. The results arrived at here suggest that Galactic clusters form as the nuclei of expanding OB associations.
| Comments: | MNRAS, in press, 36 pages, 15 figures; this http URL. contains adjustments for consistency with published version |
| Subjects: | Astrophysics (astro-ph) |
| Cite as: | arXiv:astro-ph/0009470 |
| (or arXiv:astro-ph/0009470v2 for this version) | |
| https://doi.org/10.48550/arXiv.astro-ph/0009470
arXiv-issued DOI via DataCite
|
|
| Journal reference: | Mon.Not.Roy.Astron.Soc. 321 (2001) 699 |
| Related DOI: | https://doi.org/10.1046/j.1365-8711.2001.04050.x
DOI(s) linking to related resources
|
Submission history
From: Pavel Kroupa [view email][v1] 2000年9月28日 23:06:41 UTC (145 KB)
[v2] 2001年2月13日 12:10:37 UTC (145 KB)
References & Citations
BibTeX formatted citation
×
Data provided by:
Bibliographic and Citation Tools
Bibliographic Explorer (What is the Explorer?)
Connected Papers (What is Connected Papers?)
Litmaps (What is Litmaps?)
scite Smart Citations (What are Smart Citations?)
Code, Data and Media Associated with this Article
alphaXiv (What is alphaXiv?)
CatalyzeX Code Finder for Papers (What is CatalyzeX?)
DagsHub (What is DagsHub?)
Gotit.pub (What is GotitPub?)
Hugging Face (What is Huggingface?)
Papers with Code (What is Papers with Code?)
ScienceCast (What is ScienceCast?)
Demos
Recommenders and Search Tools
Influence Flower (What are Influence Flowers?)
CORE Recommender (What is CORE?)
IArxiv Recommender
(What is IArxiv?)
arXivLabs: experimental projects with community collaborators
arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website.
Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them.
Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs.