Astronomy and Astrophysics – Astronomy
Scientific paper
May 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...194.0701e&link_type=abstract
American Astronomical Society, 194th AAS Meeting, #07.01; Bulletin of the American Astronomical Society, Vol. 31, p.831
Astronomy and Astrophysics
Astronomy
Scientific paper
Near-infrared observations of NGC 2997 and NGC 6951 with the KPNO 4-m telescope reveal complete rings of symmetrically placed star-forming complexes, some of which are obscured at optical wavelengths. The hotspot masses range from a few x 10(4) to a few x 10(5) M_o in both galaxies. The regular hotspot spacings of about 200 pc in a ring 55 pc thick in NGC 2997 and 380 pc in a ring 150 pc thick in NGC 6951 are consistent with formation by a large-scale gravitational instability in the ring. Visual extinction is estimated to be up to 3 mag around the ring in NGC 2997 and up to 5 mag in NGC 6951, as dust lanes spiral in and cross the ring. Published HST images reveal smaller super star clusters within the large complexes. These SSCs have power law luminosity functions with an exponent of approximately -2 in both galaxy rings, the same as for star-forming complexes in the disks of normal spiral galaxies.
Chromey Frederick R.
Elmegreen Debra Meloy
Reinfeld Erika L.
Sawyer Jessica E.
No associations
LandOfFree
Near-Infrared Observations of Hotspots in the Circumnuclear Rings of NGC 2997 and NGC 6951 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 Near-Infrared Observations of Hotspots in the Circumnuclear Rings of NGC 2997 and NGC 6951, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Near-Infrared Observations of Hotspots in the Circumnuclear Rings of NGC 2997 and NGC 6951 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1119564