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1999ApJ...511..761L - Astrophys. J., 511, 761-773 (1999/February-1)
Kuiper widefield infrared camera far-infrared imaging of the Galactic Center: the circumnuclear disk revealed.
LATVAKOSKI H.M., STACEY G.J., GULL G.E. and HAYWARD T.L.
Abstract (from CDS):
The far-IR morphology is reproduced by a simple model: an inclined (i ∼ 65°), slightly elliptical (e ∼ 0.06) torus with one focus at Sgr A* and two streamers on parabolic orbits with foci at Sgr A*. The torus has an inner radius of 1.58 pc, is ∼0.4 pc thick, and consists of clumpy cloudlets with characteristic sizes less than 0.15 pc. The northern streamer is identified with the northern arm, and the east-west (EW) streamer is identified with the bar and eastern arm structures seen in both their [Ne II] fine-structure line emission and the radio continuum. The northern arm is traced in the far-IR continuum from regions ∼1.4 pc outside of the far-IR ring to its apparent intersection with the EW streamer. The eastern CND is not detected in the radio continuum because of extinction by the intervening northern arm, which therefore must be nearly in the plane of the CND. Extensions of the EW streamer outside of the CND are apparent to the east and especially to the northwest. The EW streamer lies ∼85° out of the plane of the CND and is on a parobolic orbit focused on Sgr A* at a distance of 0.33 pc, with its apex well in front of or behind Sgr A*.
Abstract Copyright: ∼
Journal keyword(s): ISM: Dust, Extinction - Galaxy: Center - Infrared: ISM: Continuum
Simbad objects: 10
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