Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/23500
Title: | Gravity or turbulence? - III. Evidence of pure thermal Jeans fragmentation at ∼0.1 pc scale | Authors: | Palau, Aina Ballesteros-Paredes, Javier Vázquez-Semadeni, Enrique Sánchez-Monge, Álvaro Estalella, Robert Fall, S. Michael Zapata, Luis A. Camacho, Vianey Gómez, Laura Naranjo-Romero, Raúl Busquet, Gemma FONTANI, FRANCESCO |
Issue Date: | 2015 | Journal: | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | Number: | 453 | Issue: | 4 | First Page: | 3785 | Abstract: | We combine previously published interferometric and single-dish data of relatively nearby massive dense cores that are actively forming stars to test whether their `fragmentation level' is controlled by turbulent or thermal support. We find no clear correlation between the fragmentation level and velocity dispersion, nor between the observed number of fragments and the number of fragments expected when the gravitationally unstable mass is calculated including various prescriptions for `turbulent support'. On the other hand, the best correlation is found for the case of pure thermal Jeans fragmentation, for which we infer a core formation efficiency around 13 per cent, consistent with previous works. We conclude that the dominant factor determining the fragmentation level of star-forming massive dense cores at 0.1 pc scale seems to be thermal Jeans fragmentation. | URI: | http://hdl.handle.net/20.500.12386/23500 | URL: | http://arxiv.org/abs/1504.07644v2 https://academic.oup.com/mnras/article/453/4/3785/2593670 |
ISSN: | 0035-8711 | DOI: | 10.1093/mnras/stv1834 | Bibcode ADS: | 2015MNRAS.453.3785P | Fulltext: | open |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
stv1834.pdf | PDF editoriale | 862.94 kB | Adobe PDF | View/Open |
Page view(s)
53
checked on Mar 28, 2024
Download(s)
11
checked on Mar 28, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are published in Open Access, unless otherwise indicated.