“Aladin is an interactive software sky atlas
allowing the user to visualize digitized images of any part of the sky, to
superimpose entries from astronomical catalogs or personal user data files,
and to interactively access related data and information from the SIMBAD,
NED, VizieR, or other archives for all known objects in the field. Aladin is
particularly useful for multi-spectral cross-identifications of astronomical
sources, observation preparation and quality control of new data sets (by
comparison with standard catalogues covering the same region of sky)."
“An astronomical image contains metadata that
places each pixel accurately on the sky through a map projection. In
general, every image from a survey has a different projection, but powerful
software is now available to reproject these images to a uniform system of
projections -- like the pages of an atlas. When diverse image surveys at
different wavelengths are all brought to the same atlas, new scientific
possibilities arise: finding fainter sources, characterizing non-pointlike
phenomena such as the interstellar medium, and so on. Images can be stacked,
like the multi-channel images common in Earth Science, and the data mining
algorithms developed there brought to bear on the federated atlas.”
suite of complex theoretical simulations of globular clusters, which
include both stellar dynamics and stellar evolution, have been made
available through standard VO interfaces. Sample observed color-magnitude
diagrams are also available through the same interfaces, allowing users to
select combinations of age, metallicity, initial binary fraction, etc.,
and see how well the associated model compares with the data."
"Mirage is a Java-based software tool for exploratory
analysis and visualization of images and numerical vectors from an
arbitrary application domain. The tool shows projected images of points,
point classes, or proximity structures in one, two, or higher dimensional
subspaces, in linked views of tables, histograms, scatter plots, parallel
coordinate plots, graphs, and trees, and over image or hypertext
project will deploy a portable, compute-intensive service that will
deliver science-grade custom mosaics on demand, with requests made through
existing portals. Science-grade in this context requires that terrestrial
and instrumental features are removed from images in a way that can be
described quantitatively; custom refers to user-specified parameters of
projection, coordinates, size, rotation and spatial sampling."
"Pegasus, which stands for
Planning for Execution in Grids, is a configurable system that can map and
execute complex workflows on the Grid. Pegasus has been integrated with
the GriPhyN Chimera system. In that configuration, Pegasus receives an
abstract workflow (AW) description from Chimera, produces a concrete
workflow (CW), and submits it to Condor's DAGMan for execution. "
"Specview is a Java application
for 1-D spectral visualization and analysis of astronomical spectrograms.
It is capable of reading all the Hubble Space Telescope spectral data
formats, as well as data from a few other instruments (such as IUE, FUSE,
ISO, FORS and SDSS), preview spectra from the STScI archive, and data from
generic FITS and ASCII tables. Specview can also read and write
spectrogram data in VOTable SSAP format. Once ingested, data can be
plotted and graphically examined with a large selection of custom settings.
Specview supports instrument-specific data quality handling, flexible
spectral units conversions, custom plotting attributes, plot annotations,
hardcopy to a PostScript file or printer, etc."
"The objective is to provide a
metadata description of the volume in space-time parameter space that is
occupied by, available in, or requested by: a data set of any kind, a
resource, or a query. The "space" part of this parameter space includes
spatial coordinates of any kind: spherical coordinates, 2-D (e.g.,
detector coordinates) and 3-D Cartesian coordinates, one-dimensional
coordinates. Also included are the spatial time derivatives: velocities (space
velocities and proper motions), spectral coordinates, and redshifts/Doppler
"TOPCAT is an interactive graphical viewer
and editor for tabular data. It has been designed for use with
astronomical tables such as object catalogues, but is not restricted to
astronomical applications. It understands a number of different
astronomically important formats (including FITS and VOTable) and more
formats can be added. It offers a variety of ways to view and analyse
tables, including a browser for the cell data themselves, viewers for
information about table and column metadata, and facilities for plotting,
calculating statistics and joining tables using flexible matching
"Here we publish a solution to a problem,
that sometimes hampers the publication of observation images. If an image
is too big to be published in one piece, (e.g. the size of 150 MB) then we
divide the image into convenient pieces, and with the help of some lines
browser, and even behind a slow connection they load in reasonable time."
"The PM-Viewer was developed to visualize
results of simulations with widely used astrophysical N-body codes like"
"GADGET is a freely available code
for cosmological N-body/SPH simulations on serial workstations, or on
massively parallel computers with distributed memory. The parallel version
of GADGET uses an explicit communication model that is implemented
with the standardized MPI communication interface.
GADGET computes gravitational forces with a hierarchical tree
algorithm and represents fluids by means of smoothed particle
hydrodynamics. The code can be used for studies of isolated systems, or
for simulations that include the cosmological expansion of space, both
with or without periodic boundary conditions."
Cactus is an open source problem solving
environment designed for scientists and engineers. Its modular structure
easily enables parallel computation across different architectures and
collaborative code development between different groups. Cactus originated
in the academic research community, where it was developed and used over
many years by a large international collaboration of physicists and
NIRVANA is a numerical
code for non-relativistic, compressible, time-dependent, ideal or nonideal
(viscosity, magnetic diffusion, thermal conduction) magnetohydrodynamics
in two or three space dimensions on Cartesian grids featuring adaptive
mesh refinement (AMR) techniques to handle multi-scale problems and
implementing a Poisson solver to deal with self-gravitational flows.