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Number ratios of young stellar objects in embedded clusters

Schmeja, S., Klessen, R.S., Froebrich, Dirk (2005) Number ratios of young stellar objects in embedded clusters. Astronomy & Astrophysics, 437 (3). pp. 911-918. ISSN 0004-6361. (doi:10.1051/0004-6361:20041898) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1051/0004-6361:20041898

Abstract

Embedded clusters usually contain young stellar objects in different evolutionary stages. We investigate number ratios of objects in these classes in the star-forming regions ? Ophiuchi, Serpens, Taurus, Chamaeleon I, NGC 7129, IC 1396A and IC 348. They are compared to the temporal evolution of young stars in numerical simulations of gravoturbulent fragmentation in order to constrain the models and to determine the evolutionary stage of the clusters. Serpens is the youngest and IC 348 the most evolved cluster, although the time when the observations are best represented by the models varies strongly depending on the model. We find an inverse correlation of the star formation efficiency (SFE) of the models with the Mach number. However, the observational SFE values cannot be reproduced by the current isothermal models. This argues for models that take into account protostellar feedback processes and/or the effects of magnetic fields.

Item Type: Article
DOI/Identification number: 10.1051/0004-6361:20041898
Uncontrolled keywords: Galaxy: open clusters and associations: general, Ism: clouds, Stars: formation, Stars: pre-main sequence,
Subjects: Q Science > QB Astronomy
Q Science > QB Astronomy > QB460 Astrophysics
Divisions: Faculties > Sciences > School of Physical Sciences > Centre for Astrophysics and Planetary Sciences
Depositing User: Giles Tarver
Date Deposited: 17 Jul 2015 12:48 UTC
Last Modified: 29 May 2019 14:51 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/49576 (The current URI for this page, for reference purposes)
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