Physical structure of the photodissociation regions in NGC 7023
نویسندگان
چکیده
منابع مشابه
Evolution of interstellar dust with Herschel. First results in the photodissociation regions of NGC 7023*
Context. In photodissociation regions (PDRs), the physical conditions and the excitation evolve on short spatial scales as a function of depth within the cloud, providing a unique opportunity to study how the dust and gas populations evolve with the excitation and physical conditions. The mapping of the PDRs in NGC 7023 performed during the science demonstration phase of Herschel is part of the...
متن کاملPhysical Conditions in the Foreground Gas of Reflection Nebulae : NGC 2023 , vdB 102 , and NGC 7023
Guest Observer, McDonald Observatory, University of Texas at Austin. Visiting Astronomer, Cerro Tololo Inter-American Observatory, National Optical Astronomy Observatories, which is operated by the Association of Universities for Research in Astronomy, Inc., under cooperative agreement with the National Science Foundation.
متن کاملPhysical Conditions in the Photodissociation Region of NGC 2023
Observations of the far-infrared ne-structure emission lines of OI] (63, 146 m), C II] (158 m), and Si II] (35 m) and the adjacent continua were obtained for the reeection nebula NGC 2023 with the Cryogenic Grating Spectrometer (CGS) aboard the Kuiper Airborne Observatory (KAO). These ne-structure lines originate from a warm, atomic photodissociation region (PDR), where gas has been heated by t...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2014
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/201322711