Bosco, F., Beuther, H., Ahmadi, A., Mottram, J.C., Kuiper, R., Linz, H., Maud, L., Winters, J.M., Henning, T., Feng, S., and others. (2019) Fragmentation, rotation and outflows in the high-mass star-forming region IRAS 23033+5951: A case study of the IRAM NOEMA large program CORE. Astronomy & Astrophysics, 629 . ISSN 2329-1273. (doi:10.1051/0004-6361/201935318)
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| Official URL https://doi.org/10.1051/0004-6361/201935318 |
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Abstract
Context. The formation process of high-mass stars (> 8 M�) is poorly constrained, particularly, the effects of clump fragmentation creating multiple
Aims. We study the fragmentation of dense gas clumps, and trace the circumstellar rotation and outflows by analyzing observations of the highmass (∼ 500 M�) star-forming region IRAS 23033+5951.
we probe the gas and dust emission at an angular resolution of ∼0.4500, corresponding to 1900 au.
higher peak intensity well above a signal-to-noise ratio of 100. Hierarchical fragmentation from large to small spatial scales is discussed. Two
cores are similar to Keplerian but are missing the highest velocity components close to the center of rotation, which is a common phenomena from
19 M�. Rotational temperatures from fitting CH3CN (12K − 11K) spectra are used for estimating the gas temperature and by that the disk stability
stellar object and considering different disk inclination angles, we identify only one candidate disk to be unstable against gravitational instability
Conclusions. The dominant sources cover different evolutionary stages within the same maternal gas clump. The appearance of rotation and
outflows of the cores are similar to those found in low-mass star-forming regions.
| Item Type: | Article |
|---|---|
| DOI/Identification number: | 10.1051/0004-6361/201935318 |
| Uncontrolled keywords: | ISM: individual objects (IRAS 23033+5951) – ISM: kinematics and dynamics – ISM: jets and outflows – stars: circumstellar matter – stars: formation – stars: massive |
| Divisions: | Faculties > Sciences > School of Physical Sciences > Centre for Astrophysics and Planetary Sciences |
| Depositing User: | James Urquhart |
| Date Deposited: | 11 Jul 2019 14:09 UTC |
| Last Modified: | 25 Sep 2019 14:45 UTC |
| Resource URI: | https://kar.kent.ac.uk/id/eprint/75295 (The current URI for this page, for reference purposes) |
| Urquhart, J.S.: |  https://orcid.org/0000-0002-1605-8050 |
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