Gravitational collapse of the OMC-1 region
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 30 m observations. Our analysis of its internal gas dynamics reveals the presence of accelerated motions towards the Orion Nebula Cluster, showing a characteris...
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| Veröffentlicht in: | Astronomy and astrophysics (Berlin) 2017-06, Vol.602, p.L2 |
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| container_title | Astronomy and astrophysics (Berlin) |
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| creator | Hacar, A. Alves, J. Tafalla, M. Goicoechea, J. R. |
| description | 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 30 m 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. |
| doi_str_mv | 10.1051/0004-6361/201730732 |
| format | Article |
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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.</description><subject>Collapse</subject><subject>Gas dynamics</subject><subject>Gravitation</subject><subject>Gravitational collapse</subject><subject>ISM: clouds</subject><subject>ISM: kinematics and dynamics</subject><subject>ISM: structure</subject><subject>Orion nebula</subject><subject>stars: formation</subject><subject>submillimeter: ISM</subject><issn>0004-6361</issn><issn>1432-0746</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNo9kEFLw0AQhRdRsFZ_gZeAN2HtzE6yuzlK0Ko09FIpeFm2ya6mRlN3U9F_b0qlp2GY9w3vPcYuEW4QMpwAQMolSZwIQEWgSByxEaYkOKhUHrPRQXHKzmJcD6tATSN2PQ32u-lt33Sftk2qrm3tJrqk80n_5pJ5WXBMgnsdzufsxNs2uov_OWbP93eL4oHP5tPH4nbGK5LQc6k0ilWuPWXS66omIaiyNldusFULl-aI6KTIsZbSuRWKXLvMKu-rutaiojG72v_dhO5r62Jv1t02DO6iEZBlGkgDDiraq6rQxRicN5vQfNjwaxDMrhSzi2x2kc2hlIHie6qJvfs5IDa8G6lIZUbD0pQvTwtVFsos6Q_0ZWC4</recordid><startdate>20170601</startdate><enddate>20170601</enddate><creator>Hacar, A.</creator><creator>Alves, J.</creator><creator>Tafalla, M.</creator><creator>Goicoechea, J. 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| ispartof | Astronomy and astrophysics (Berlin), 2017-06, Vol.602, p.L2 |
| issn | 0004-6361 1432-0746 |
| language | eng |
| recordid | cdi_proquest_journals_2055803801 |
| source | Bacon EDP Sciences France Licence nationale-ISTEX-PS-Journals-PFISTEX; EDP Sciences; EZB-FREE-00999 freely available EZB journals |
| subjects | Collapse Gas dynamics Gravitation Gravitational collapse ISM: clouds ISM: kinematics and dynamics ISM: structure Orion nebula stars: formation submillimeter: ISM |
| title | Gravitational collapse of the OMC-1 region |
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