Gravitational collapse of the OMC-1 region
- Author(s)
- A. Hacar, J. Alves, Mario Tafalla, Javier R. Goicoechea
- Abstract
We have investigated the global dynamical state of the integral shaped filament in the Orion A cloud using new N2H+ (1-0) large-scale, IRAM 30m observations. Our analysis of its internal gas dynamics reveals the presence of accelerated motions towards the Orion Nebula Cluster, showing a characteristic blue-shifted profile centred at the position of the OMC-1 South region. The properties of these observed gas motions (profile, extension, and magnitude) are consistent with the expected accelerations for the gravitational collapse of the OMC-1 region and explain both the physical and kinematic structure of this cloud.
- Organisation(s)
- Department of Astrophysics
- External organisation(s)
- Leiden University, Observatorio Astronómico Nacional (OAN-IGN), Spanish National Research Council (CSIC)
- Journal
- Astronomy & Astrophysics
- Volume
- 602
- No. of pages
- 5
- ISSN
- 0004-6361
- DOI
- https://doi.org/10.1051/0004-6361/201730732
- Publication date
- 05-2017
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103003 Astronomy, 103004 Astrophysics
- Keywords
- ASJC Scopus subject areas
- Astronomy and Astrophysics, Space and Planetary Science
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/0c7ac254-4ea5-4de4-9a06-32461f6e47c8