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Date and Time of the Query: 2019-01-21 T22:26:19 PST
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For refcode 2001A&A...368...16M:
Retrieve 40 NED objects in this reference.
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Copyright by European Southern Observatory (ESO). Reproduced by permission
2001A&A...368...16M Surface photometry of spiral galaxies in NIR: Structural parameters of disks and bulges. Moellenhoff C., Heidt J. Received 29 August 2000/Accepted 14 November 2000 Abstract. A sample of 40 bright spiral galaxies (B_T_<12) with low inclination and without bar was observed with JHK filters. For this purpose the MAGIC NICMOS3 camera at the 2.2 m telescope of the Calar Alto observatory, Spain was used. With a newly developed 2-dimensional algorithm the distribution of the surface brightness was fitted simultaneously by corresponding functions for the disk- and bulge-structure. While the disk was fitted with an exponential function, the bulge profile was fitted with a generalized de Vaucouleurs R^{beta}^ law, with the concentration parameter {beta}=1/n as a further fit variable. The correlation of the resulting structural parameters of disks and bulges lead to some interesting relations: 1. The use of a variable exponent {beta} is necessary for a realistic description of the bulge structure; 2. Disks and bulges show similar correlations between effective radius, effective surface brightness and luminosity; 3. They populate a common strip in the fundamental plane; 4. From the correlations between {beta} and Hubble type some conclusions about the formation and evolution of spiral galaxies can be drawn. Key words: galaxies: spiral - galaxies: structure - galaxies: photometry - galaxies: fundamental parameters - galaxies: statistics - galaxies: formation
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