The unusual morphology of the high-velocity gas in L723 - One outflow or two

Journal Article · Sun Jul 01 04:00:00 EDT 1990 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/168939· OSTI ID:6596793

Avery, L W; Hayashi, S S; White, G J ^[1]

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1. National Research Council of Canada, Herzberg Institute of Astrophysics, Ottawa (Canada) Joint Astronomy Center, Hilo, HI (USA) Queen Mary and Westfield College, London (England)

The molecular outflow in L723 in the CO J = 2-1 line was mapped. The unusual morphology of the flow which has been revealed in earlier CO J = 1-0 maps is very marked in the present data. The present maps of the emission integrated over the entire line wings reveal a striking quadrupolar morphology. It has been suggested that this structure could be due to two separate outflow sources which are virtually coincident or to a single, nonsteady source which is precessing. However, in the maps made of the more optically thin emission arising from only the higher velocity intervals in the line wings, the quadrupolar structure transforms into two continuous, roughly semicircular arcs, one on each side of the IRAS source 1915 + 1907. These arcs are interpreted to be the limb-brightened walls of evacuated cavities swept clear by a wind from the IRAS source. Consequently, it appears that L723 contains a single, rather conventional bipolar outflow with an axis oriented from northeast to southwest. 12 refs.

• OSTI ID: 6596793
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 357; 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
ATMOSPHERES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
COSMIC GASES
ELECTROMAGNETIC RADIATION
FAR INFRARED RADIATION
FLUID FLOW
FLUIDS
GAS FLOW
GASES
INFRARED RADIATION
INTERSTELLAR SPACE
MAPS
MOLECULES
MORPHOLOGY
OXIDES
OXYGEN COMPOUNDS
RADIATION SOURCES
RADIATIONS
RED SHIFT
SPACE
STELLAR ACTIVITY
STELLAR ATMOSPHERES
STELLAR CORONAE
STELLAR WINDS
VELOCITY