Статья

Empirical color transformations between SDSS photometry and other photometric systems

Katrin JordiAstronomical Institute of the University of Basel, Department of Physics and Astronomy, Venusstrasse 7, 4102 Binningen, Switzerland e-mail: [jordi;grebel;ammon]@astro.unibas.chE. K. GrebelAstronomical Institute of the University of Basel, Department of Physics and Astronomy, Venusstrasse 7, 4102 Binningen, Switzerland e-mail: [jordi;grebel;ammon]@astro.unibas.chK. AmmonAstronomical Institute of the University of Basel, Department of Physics and Astronomy, Venusstrasse 7, 4102 Binningen, Switzerland e-mail: [jordi;grebel;ammon]@astro.unibas.ch

2006en

ABI

Аннотация

Aims.We present empirical color transformations between the Sloan Digital Sky Survey (SDSS) ugriz photometry and the Johnson-Cousins UBVRI system and Becker's RGU system, respectively. Owing to the magnitude of data that is becoming available in the SDSS photometric system it is particularly important to be able to convert between this new system and traditional photometric systems. Unlike earlier published transformations we based our calculations on stars actually measured by the SDSS with the SDSS 2.5-m telescope. The photometric database of the SDSS provides in a sense a single-epoch set of “tertiary standards” covering more than one quarter of the sky. Our transformations should facilitate their use to easily and reliably derive the corresponding approximate Johnson-Cousins or RGU magnitudes.

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Идентификаторы

DOI: 10.1051/0004-6361:20066082

Цитирования и источники

Цитирований: 4Использованных источников: 0

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