Computational Tools for the Spectroscopic Analysis of White Dwarfs

1 code implementation • 22 Jul 2020 • Vedant Chandra, Hsiang-Chih Hwang, Nadia L. Zakamska, Tamás Budavári

The spectroscopic features of white dwarfs are formed in the thin upper layer of their stellar photosphere.

Solar and Stellar Astrophysics

Photo-z-SQL: integrated, flexible photometric redshift computation in a database

1 code implementation • 4 Nov 2016 • Róbert Beck, László Dobos, Tamás Budavári, Alexander S. Szalay, István Csabai

Also, the efficient handling of variable filter sets is a necessity for heterogeneous databases, for example the Hubble Source Catalog, and for cross-match services such as SkyQuery.

Astrophysics of Galaxies Instrumentation and Methods for Astrophysics Databases

Mapping the Similarities of Spectra: Global and Locally-biased Approaches to SDSS Galaxy Data

no code implementations • 13 Sep 2016 • David Lawlor, Tamás Budavári, Michael W. Mahoney

This technique permits us to characterize empirically the natural variations in observed spectra data, and we illustrate how this approach can be used in an exploratory manner to highlight both large-scale global as well as small-scale local structure in Sloan Digital Sky Survey (SDSS) data.

Efficient classification of billions of points into complex geographic regions using hierarchical triangular mesh

1 code implementation • 2 Oct 2014 • Dániel Kondor, László Dobos, István Csabai, András Bodor, Gábor Vattay, Tamás Budavári, Alexander S. Szalay

We present a case study about the spatial indexing and regional classification of billions of geographic coordinates from geo-tagged social network data using Hierarchical Triangular Mesh (HTM) implemented for Microsoft SQL Server.

Databases