Abstract
view Abstract Citations (34) References (77) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Structure and Dynamics of Ringed Galaxies. III. Surface Photometry and Kinematics of the Ringed Nonbarred Spiral NGC 7531 Buta, R. Abstract The photometric and kinematic properties of the southern galaxy NGC 7531, a large example of a nonbarred spiral possessing a very bright inner ring, are explored via UVBRI surface photometry and emission-line spectroscopy. The galaxy is a global, two-armed spiral galaxy possessing a bright inner ring with a radius of 2.3 kpc. The ring has an average surface brightness in blue light of four to six times higher than in NGC 1433, and is 2.5 times smaller in size. The ring is a zone of active star formation and H II region concentration. The light distribution within NGC 7531 cannot be modelled in terms of a simple combination of an r exp 1/4 spheroid, exponential disk, and ring. A Fourier analysis suggests that the 'intermediate zone' between the inner ring and the outer arms is intrinsically oval with a phase of about 100 deg with respect to the line of nodes in the galaxy plane. Publication: The Astrophysical Journal Supplement Series Pub Date: May 1987 DOI: 10.1086/191190 Bibcode: 1987ApJS...64....1B Keywords: Astronomical Photometry; Celestial Mechanics; Galactic Structure; Spiral Galaxies; Astronomical Models; Astronomical Spectroscopy; H Ii Regions; Kinematic Equations; Luminosity; Astrophysics; GALAXIES: INDIVIDUAL NGC NUMBER: NGC 7531; GALAXIES: INTERNAL MOTIONS; GALAXIES: STELLAR CONTENT; GALAXIES: STRUCTURE; NEBULAE: H II REGIONS full text sources ADS | data products SIMBAD (2) NED (2) Related Materials (3) Part 1: 1986ApJS...61..609B Part 2: 1986ApJS...61..631B Part 5: 1987ApJS...64..383B
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
