VAMDC Project (2009 - 2012)

Reference Details
González, Juan A., Witthoeft, Michael C., García, Javier, Mendoza, Claudio, Kallman, Timothy R. and Núñez, Luis A. (2010), "XSTAR: application deployment in the global cyber-infrastructure", High-resolution X-ray spectroscopy: past, present, and future, Utrecht, The Netherlands, March 15-17, 2010..

Within the context of the Virtual Atomic and Molecular Data Center (VAMDC) project [1, 2] and with NASA and EELA-2 [3] support, the popular X-ray spectral modeling code XSTAR [4] has been adopted as a case study in application deployment in the new cyber-infrastructure. Its current flat-file atomic database is being migrated to both relational (SQL) and hierarchical (XML) schemata in order to evaluate data maintenance and integration arrangements, and to promote data exchange by a wider user community. CPU-intensive parameter sweeps are parallelized considering both grid and cloud computing environments to enhance performance and usability. We present a new generation of this package to be included in the spectral modeling portfolio of the International Virtual Observatory Alliance.

[1] Mendoza, C., Núñez, L., 2009, in Proceedings of the First EELA-2 Conference, Editorial CIEMAT, Madrid, p. 219.

[2] VAMDC: Virtual Atomic and Molecular Data Center,

[3] EELA-2: E-science grid facility for Europe and Latin America,

[4] Bautista, M. A., Kallman, T. R., 2001, Astrophys. J. Suppl. Ser., 134, 139.

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