Scale-length determinations of exponential discs of spiral galaxies - A comparison

Bibcode
1991A&A...248...57K
Knapen, J. H.; van der Kruit, P. C.
Referencia bibliográfica

Astronomy and Astrophysics (ISSN 0004-6361), vol. 248, no. 1, Aug. 1991, p. 57-61. Research supported by EEC.

Fecha de publicación:
8
1991
Número de autores
2
Número de autores del IAC
1
Número de citas
58
Número de citas referidas
56
Descripción
In the present comparative study of published values for the scale lengths of spiral galaxies' exponential disks, the average value of the discrepancy for more than 120 galaxies is 23 percent, with a standard deviation of 20 percent. Neither systematic trends nor correlations of discrepancies with such galaxy parameters as morphological type, arm class, or inclination, are noted. Semiautomated methods of scale-length determination are noted, however, to introduce rather large discrepancies. These results demonstrate the care with which physical intepretation of the exponential character of spiral galaxy disks should be conducted.
Tipo
Con árbitro
Galaxias espirales

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