Journal
ASTRONOMY & ASTROPHYSICS
Volume 602, Issue -, Pages -Publisher
EDP SCIENCES S A
DOI: 10.1051/0004-6361/201730732
Keywords
ISM: clouds; ISM: kinematics and dynamics; ISM: structure; stars: formation; submillimeter: ISM
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Funding
- Netherlands Organisation for Scientific Research (NWO) [639.041.644]
- Spanish MINECO [AYA2016-79006-P, AYA2012-32032]
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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.
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