The molecular bar and star formation in the nucleus of NGC 6946

We have observed the bright, nearby galaxy NGC 6946 in the 2.6 mm line of CO with the Owens Valley Millimeter-Wave Interferometer, synthesizing a beam 7''.6 by 5''.4. The molecular gas in the central 1.5 kpc of the galaxy is confined to a bar of extent approx.2700 pc by 550 pc, w...

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Veröffentlicht in:	Astrophys. J., Lett. Ed.; (United States) Lett. Ed.; (United States), 1985-11, Vol.298 (1), p.L21-L25
Hauptverfasser:	BALL, R, SARGENT, A. I, SCOVILLE, N. Z, LO, K. Y, SCOTT, S. L
Format:	Artikel
Sprache:	eng
Schlagworte:	640105 - Astrophysics & Cosmology- Galaxies Astronomy CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS COSMIC GASES COSMIC RADIO SOURCES Earth, ocean, space Exact sciences and technology FLUIDS GALACTIC EVOLUTION GALAXIES GALAXY NUCLEI GASES Interstellar medium (ism) and nebulae in external galaxies MOLECULES MORPHOLOGY STAR EVOLUTION Stellar systems. Galactic and extragalactic objects and systems. The universe
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Zusammenfassung:	We have observed the bright, nearby galaxy NGC 6946 in the 2.6 mm line of CO with the Owens Valley Millimeter-Wave Interferometer, synthesizing a beam 7''.6 by 5''.4. The molecular gas in the central 1.5 kpc of the galaxy is confined to a bar of extent approx.2700 pc by 550 pc, which is centered on the nucleus and connects two dust lanes in the innermost spiral arms. The molecular bar is the likely source of the star formation activity suggested by optical and infrared studies in the nucleus of NGC 6946.
ISSN:	0004-637X 1538-4357
DOI:	10.1086/184559