Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...128..140m&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 128, no. 1, Nov. 1983, p. 140-147.
Astronomy and Astrophysics
Astrophysics
11
Galactic Rotation, Hydrogen Clouds, Ionized Gases, Radial Velocity, Spiral Galaxies, Fabry-Perot Interferometers, Galactic Nuclei, Galactic Structure, H Alpha Line, Mass Distribution
Scientific paper
The first complete velocity field of the ionized gas in NGC 2903 has been drawn from Perot-Fabry interferograms in H-alpha light obtained with the 6-m SAO telescope, and the photon counting system from the Marseilles Observatory. 1364 velocity points were averaged in squares of 11.2 x 11.2 arcsec on the sky. It was then possible to draw isovelocity lines on the whole galaxy with a high resolution both spectral (better than 10 km/sec) and spatial (about 10 arcsec). Interesting new results are brought by this fairly symmetrical velocity field. The dynamic center appears to be the brightest spot (in blue light) of the nuclear region. Among the several wiggles of the isovelocity lines there is a remarkable series of systematic distortions occurring along the southern arm of the galaxy. They reveal velocity perturbations of the gas when crossing the spiral arm.
Boulesteix Jacques
Georgelin Yvon
Marcelin Michel
No associations
LandOfFree
The velocity field of the ionized gas in NGC 2903 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 The velocity field of the ionized gas in NGC 2903, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The velocity field of the ionized gas in NGC 2903 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1483869