Further improved formulae for the transformation of Catalogue of Galaxies and Clusters of Galaxies magnitudes to the B[SUB]I[/SUB] super S system
| Autor: | G. G. Fahlman, Paul Hickson, J. R. Auman |
|---|---|
| Rok vydání: | 1989 |
| Předmět: |
Physics
Astronomy Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Uppsala General Catalogue Virgo Cluster Galaxy Photometry (optics) Galaxy groups and clusters Apparent magnitude Space and Planetary Science Catalogue of Galaxies and Clusters of Galaxies Surface brightness Astrophysics::Galaxy Astrophysics |
| Zdroj: | Publications of the Astronomical Society of the Pacific. 101:859 |
| ISSN: | 1538-3873 0004-6280 |
| DOI: | 10.1086/132507 |
| Popis: | New formulae are presented to transform the CGCG magnitudes to the BS^T_ system developed by de Vaucouleurs and his collaborators. Formulae are provided for both the case where data from the Second Reference Catalogue are used and where data from the Uppsala General Catalogue are used. The regression formulae depend strongly on the mean surface brightness of the galaxy and less strongly on total brightness. The coefficients of these variables are different for galaxies in Volume 1 of the CGCG compared to galaxies in Volumes 2-6. The constant term in the regression formula depends on the morphological tape, the CGCG volume, and whether the galaxy is in the Virgo cluster region for Volumes 1 and 2. The calculation of the weights of the observations has been improved so that the distribution of the normalized residuals is close to a Gaussian distribution. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|