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A High Resolution Atlas of Composite SDSS Galaxy Spectra
László Dobos, István Csabai, Ching-Wa Yip +3
In this work we present an atlas of composite spectra of galaxies based on the data of the Sloan Digital Sky Survey Data Release 7 (SDSS DR7). Galaxies are classified by colour, nu…
Correlations between Nebular Emission and the Continuum Spectral Shape in SDSS Galaxies
Zsuzsanna Győry, Alexander S. Szalay, Tamás Budavári +2
We present a statistical study of the correlations and dimensionality of emission lines carried out on a sample of over 40,000 Sloan Digital Sky Survey (SDSS) galaxies. Using princ…
Array Requirements for Scientific Applications and an Implementation for Microsoft SQL Server
László Dobos, Alexander Szalay, José Blakeley +6
This paper outlines certain scenarios from the fields of astrophysics and fluid dynamics simulations which require high performance data warehouses that support array data type. A…
Order statistics of the early-type galaxy luminosity function
Laszlo Dobos, Istvan Csabai
We apply order statistics (OS) to the bright end () of the luminosity distribution of early-type galaxies spectroscopically identified in the SDSS DR7 catalog. We calcul…