Aperture synthesis observations of NH sub 3 in OMC-1 - Filamentary structures around Orion-KL

Journal Article · Wed Aug 01 04:00:00 EDT 1990 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/169041· OSTI ID:6550317

Murata, Yasuhiro; Kawabe, Ryohei; Ishiguro, Masato; Morita, Kohichiro; Kasuga, Takashi ^[1]

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1. Tokyo Univ. (Japan) Nobeyama Radio Observatory, Minamimaki (Japan)

Aperture synthesis observations of the Orion molecular cloud 1 (OMC-1) have been made in NH{sub 3} (1, 1) and (2, 2) emission at 23.7 GHz, using the Nobeyama Millimeter Array (NMA), and obtained 16 arcsec resolution maps for OMC-1 and 8 arcsec resolution maps for the Orion-KL region. Filamentary structures extending over 0.5 pc from the Orion-KL region to the north and northwest directions were found. These structures are associated with the H2 finger structures and Herbig-Haro objects which are located at the blue-shifted side of the bipolar molecular outflow. The results suggest that these filaments are ambient molecular cloudlets with shocked surfaces caused by the strong stellar wind from the Orion-KL region. The 8 arcsec resolution NH{sub 3} (2, 2) maps show the extended features around the hot core of Orion-KL. These extended features correspond to the rotating disk and shocked shell associated with the bipolar molecular outflow. 37 refs.

• OSTI ID: 6550317
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 359; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMMONIA
COSMIC GASES
ELEMENTS
FLUIDS
GASES
HERBIG-HARO OBJECTS
HYDRIDES
HYDROGEN
HYDROGEN COMPOUNDS
INTERSTELLAR SPACE
MAPS
MORPHOLOGY
NEBULAE
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NONMETALS
PROTOSTARS
SPACE
SPECTRA
STELLAR ACTIVITY
STELLAR WINDS