Deciphering the 3D Orion Nebula. III. Structure on the NE Boundary of the Orion-S Embedded Molecular Cloud
| Autor: | C. R. O'Dell, Gary J. Ferland, N. P. Abel |
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| Rok vydání: | 2021 |
| Předmět: |
Physics
010308 nuclear & particles physics Molecular cloud FOS: Physical sciences Boundary (topology) Astronomy and Astrophysics Astrophysics Astrophysics - Astrophysics of Galaxies 01 natural sciences Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) 0103 physical sciences Orion Nebula Astrophysics::Solar and Stellar Astrophysics 010303 astronomy & astrophysics Astrophysics::Galaxy Astrophysics |
| Zdroj: | The Astrophysical Journal. 908:162 |
| ISSN: | 1538-4357 0004-637X |
| Popis: | We have extended the work of Papers I and II of this series to determine at higher spatial resolution the properties of the embedded Orion-S Molecular Cloud that lies within the ionized cavity of the Orion Nebula and of the thin ionized layer that lies between the Cloud and the observer. This was done using existing and new [NII](658.3 nm) and [OIII] (500.7 nm) spectra that map the central region of the Orion Nebula (the Huygens Region). However, it remains unclear how the surface brightness of the ionized layer on the Orion-S Molecular Cloud and that of a foreground Nearer Ionized Layer are linked, as the observations show they must be. It is shown that the Cloud modifies the outer parts of the Huygens Region in the direction of the extended hot X-ray gas. Comment: 21pages, 7 figures Accepted Astrophysical Journal |
| Databáze: | OpenAIRE |
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