Volume 408, Number 2, September III 2003
|Page(s)||601 - 610|
|Section||Stellar structure and evolution|
|Published online||17 November 2003|
Multiple outflows in IRAS 19410+2336*
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
2 Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
Corresponding author: H. Beuther, firstname.lastname@example.org
Accepted: 16 May 2003
Plateau de Bure Interferometer high-spatial resolution CO observations combined with near-infrared H2 data disentangle at least seven (possibly even nine) molecular outflows in the massive star-forming region IRAS 19410+2336. Position–velocity diagrams of the outflows reveal Hubble-like relationships similar to outflows driven by low-mass objects. Estimated accretion rates are of the order of yr-1, sufficiently high to overcome the radiation pressure and form massive stars via disk-mediated accretion processes. The single-dish large-scale mm continuum cores fragment into several compact condensations at the higher spatial resolution of the PdBI which is expected due to the clustering in massive star formation. While single-dish data give a simplified picture of the source, sufficiently high spatial resolution resolves the structures into outflows resembling those of low-mass star-forming cores. We interpret this as further support for the hypothesis that massive stars do form via disk-accretion processes similar to low-mass stars.
Key words: accretion, accretion disks / stars: early type / stars: formation / ISM: jets and outflows
Based on observations with the IRAM Plateau de Bure Interferometer, the Calar Alto 3.5 m telescope and the IRAM 30 m. IRAM is supported by INSU/CNRS (France), MPG (Germany), and IGN (Spain). Calar Alto is operated by the MPIA in Heidelberg, jointly with the Spanish National Commission for Astronomy.
© ESO, 2003
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.