Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...200...29a&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 200, no. 1-2, July 1988, p. 29-39.
Astronomy and Astrophysics
Astrophysics
58
Active Galactic Nuclei, Nuclear Astrophysics, Spiral Galaxies, Star Formation, Barred Galaxies, Fabry-Perot Spectrometers, H Alpha Line, Interstellar Gas, Ionized Gases, Molecular Clouds, Velocity Distribution
Scientific paper
Imaging Fabry-Perot spectroscopy at H-alpha wavelength has been obtained on the spiral galaxy NGC 4321. This provides an H-alpha image of the galaxy, a 656.3 nm continuum image and the H-alpha velocity field of the ionized gas in NGC 4321. The nuclear region of this galaxy shows a peculiar two-lobe structure in H-alpha light, in the inner 1.5 kpc. It is proposed that the double-lobe feature is a ring of enhanced star formation located between the two Inner Linblad Resonances (ILR). The orbits of the gas clouds at such radii (the ILRs are located at 0.35 and 1.1 kpc) are strongly perturbed, increasing the collision rate between the gas clouds, which in turn, induces star formation. This kind of association of star forming regions and ILRs suggests that star formation is linked to the dynamical behavior of the galaxy.
Arsenault Robin
Boulesteix Jacques
Georgelin Yvon
ROY Jean-Rene
No associations
LandOfFree
A circumnuclear ring of enhanced star formation in the spiral galaxy NGC 4321 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A circumnuclear ring of enhanced star formation in the spiral galaxy NGC 4321, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A circumnuclear ring of enhanced star formation in the spiral galaxy NGC 4321 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1421792