Jose Enrique Ruiz

Spanish National Research Council | CSIC · Department of Extragalactic Astronomy

In this article, we present Gammapy, an open-source Python package for the analysis of astronomical $\gamma$-ray data, and illustrate the functionalities of its first long-term-support release, version 1.0. Built on the modern Python scientific ecosystem, Gammapy provides a uniform platform for reducing and modeling data from different $\gamma$-ray...

Context. Traditionally, TeV- γ -ray astronomy has been conducted by experiments employing proprietary data and analysis software. However, the next generation of γ -ray instruments, such as the Cherenkov Telescope Array Observatory (CTAO), will be operated as open observatories. Alongside the data, they will also make the associated software tools...

We present here a provenance management system adapted to astronomical projects needs. We collected use cases from various astronomy projects and defined a data model in the ecosystem developed by the IVOA (International Virtual Observatory Alliance). From those use cases, we observed that some projects already have data collections generated and a...

We present here a provenance management system adapted to astronomical projects needs. We collected use cases from various astronomy projects and defined a data model in the ecosystem developed by the IVOA (International Virtual Observatory Alliance). From those use cases, we observed that some projects already have data collections generated and a...

The prototype of the Large-Sized Telescope (LST) of the Cherenkov Telescope Array (CTA) is presently going through its commissioning phase. A total of four LSTs, among others, will operate together at Observatorio del Roque de Los Muchachos, which will host the CTA North site. A computing center endowed with 1760 cores and several petabytes disk sp...

The analysis and combination of data from different gamma-ray instruments involves the use of collaboration proprietary software and case-by-case methods. The effort of defining a common data format for high-level data, namely event lists and instrument response functions (IRFs), has recently started for very-high-energy gamma-ray instruments, driv...

The analysis and combination of data from different gamma-ray instruments involves the use of collaboration proprietary software and case-by-case methods. The effort of defining a common data format for high-level data, namely event lists and instrument response functions (IRFs), has recently started for very-high-energy gamma-ray instruments, driv...

Asymmetries in HI in galaxies are often caused by the interaction with close companions, making isolated galaxies an ideal framework to study secular evolution. The AMIGA project has demonstrated that isolated galaxies show the lowest level of asymmetry in their HI integrated profiles, yet some present significant asymmetries. CIG 96 (NGC 864) is a...

Gammapy is a Python package for high-level gamma-ray data analysis built on Numpy, Scipy and Astropy. It enables us to analyze gamma-ray data and to create sky images, spectra and lightcurves, from event lists and instrument response information, and to determine the position, morphology and spectra of gamma-ray sources. So far Gammapy has mostly b...

New tools are needed to handle the growth of data in astrophysics delivered by recent and upcoming surveys. We aim to build open-source, light, flexible, and interactive software designed to visualize extensive three-dimensional (3D) tabular data. Entirely written in the Python language, we have developed interactive tools to browse and visualize t...

An efficient exploitation of Distributed Computing Infrastructures (DCIs) is needed to deal with the data deluge that the scientific community is facing, in particular the Astrophysics one due to the emerging Square Kilometre Array (SKA) telescope that will reach data rates in the exascale domain. Hence, Science Gateways are being enriched with adv...

This document discusses the definition of the Parameter Description Language (PDL). In this language parameters are described in a rigorous data model. With no loss of generality, we will represent this data model using XML. It intends to be a expressive language for self-descriptive web services exposing the semantic nature of input and output par...

An efficient exploitation of the Distributed Computing Infrastructures (DCIs) is specially needed to deal with the data deluge that the scientific community, in particular the Astrophysics one, is facing. This requires a good understanding of the underlying DCIs. Science Gateways (SGs) provide the users with an environment that eases the interactio...

The construction of catalogues of galaxies and the posterior study of galaxy properties in relation to their environment, have been hampered by the scarce redshift information. The new 3-dimensional (3D) surveys permits to distinguish small, faint, physically bound satellites from a background projected galaxy population, giving a more comprehensiv...

Despite the long tradition of publishing digital datasets in Astronomy, and the existence of a rich network of services providing astronomical datasets in standardized interoperable formats through the Virtual Observatory (VO), there has been little use of scientific workflow technologies in this field. In this paper we present AstroTaverna, a plug...

We present structural parameters and (g – i) bulge/disk colors for a large sample (189) of isolated AMIGA galaxies. The structural parameters of bulges were derived from the two-dimensional bulge/disk/bar decomposition of Sloan Digital Sky Survey i-band images using GALFIT. Galaxies were separated between classical bulges (nb > 2.5) and pseudobulge...

We present structural parameters and (g-i) bulge/disk colors for a large sample (189) of isolated AMIGA galaxies. The structural parameters of bulges were derived from the 2D bulge/disk/bar decomposition of SDSS i-band images using GALFIT. Galaxies were separated between classical bulges (n_b>2.5) and pseudobulges (n_b<2.5), resulting in a dominant...

In the framework of the AMIGA project we present a revision of the environment for galaxies in the Catalogue of Isolated Galaxies (CIG, Karachentseva 1973) using the ninth data release of the Sloan Digital Sky Survey (SDSS-DR9). The aims of this study are to refine the photometric-based AMIGA sample of isolated galaxies and to provide an improvemen...

The scientific goals of the AMIGA project are based on the anal-ysis of a significant amount of spectroscopic 3D data. In order to perform this work we present an initiative to develop a new VO compliant package, including present core applications and tasks offered by the Groningen Image Processing System (GIPSY), and new ones based on use cases e...

Result of the revision of the CIG isolation criteria and quantification of the isolation degree for 636 CIG galaxies in the photometric study, and 411 CIG galaxies in the spectroscopic study, using data from the Ninth Data Release of the Sloan Digital Sky Survey. (2 data files).

Scientific workflows play an important role in computational research as essential artifacts for communicating the methods used to produce research findings. We are witnessing a growing number of efforts that treat workflows as first-class artifacts for sharing and exchanging scientific knowledge, either as part of scholarly articles or as stand-al...

AstroTaverna is a plugin for Taverna Workbench that provides the means to build astronomy workflows using Virtual Observatory services discovery and efficient manipulation of VOTables (based on STIL tool set). It integrates SAMP-enabled software, allowing data exchange and communication among local VO tools, as well as the ability to execute Aladin...

Scientific workflows play an important role in computational research, as the essential artifacts for communicating the methods used to produce the research findings. We are witnessing a growing number of efforts of treating workflows as first-class artifacts for sharing and exchanging actual scientific knowledge, either as part of scholarly articl...

In this position paper we present a lightweight command-line tool RO Manager, which provides a straightforward way for scientists to assemble an aggregation of their experiment materials and methods which can then be published and shared with colleagues or linked to sci-entific publications, to enhance the reproducibility and trustworthiness of exp...

The Virtual Observatory (VO) is becoming the de-facto standard for astronomical data publication. However, the number of radio astronomical archives is still low in general, and even lower is the number of radio astronomical data available through the VO. In order to facilitate the building of new radio astronomical archives, easing at the same tim...

In this position paper we present a lightweight command-line tool RO Manager, which provides a straightforward way for scientists to assemble an aggregation of their experiment materials and methods which can then be published and shared with colleagues or linked to scientific publications, to enhance the reproducibility and trustworthiness of expe...

We report the study performed as part of the AMIGA (Analysis of the interstellar Medium of Isolated GAlaxies; http://www.amiga.iaa.es ) project, focused on the SDSS ( g - r ) colors of the sample. Assuming that color is an indicator of star formation history, this work better records the signature of passive star formation via pure secular evolutio...

Most of the science done in Astronomy is digital science, from observing proposals to final publications, data and software used: each of the elements and actions involved in the overall process could be recorded in electronic format. This fact does not prevent that the final result of an experiment is still difficult to reproduce. At the same time...

The Astronomy and Astrophysics Master, running at the Valencian International University (VIU, http://www.viu.es) since march 2010, is a clear example of how development of information and communication technologies (ICTs) and new e-learning methods are changing the traditional distance learning. In the context of the European Space for Higher Educ...

Several processes can affect a galaxy over its lifetime. If effects of interaction with compan-ions are minimized, it is possible to focus on secular evolutionary processes. We present a study of the SDSS (g–r) colors of isolated galaxies in the AMIGA project (Analysis of the interstellar Medium of Isolated GAlaxies; http://www.amiga.iaa.es). Assum...

Astronomical observatories are today generating increasingly large volumes of data. For an efficient use of them, databases have been built following the standards proposed by the International Virtual Observatory Alliance (IVOA), providing a common protocol to query them and make them interoperable. The IRAM 30-m radio telescope, located in Sierra...

A workflow-centric research object bundles a workflow, the provenance of the results obtained by its enactment, other digital objects that are relevant for the experiment (papers, datasets, etc.), and anno-tations that semantically describe all these objects. In this paper, we propose a model to specify workflow-centric research objects, and show h...

Revision of the main properties for all AMIGA galaxies. Because a significant number of new data are available for the sample since the AMIGA project started, apparent magnitudes, morphological types, distances, and optical luminosities for the CIG sample have been updated. In the frame of the Wf4Ever project, the revision of these properties was p...

The basic properties of galaxies can be affected by both nature (internal processes) or nurture (interactions and effects of environment). Deconvolving the two effects is an important current effort in astrophysics. Observed properties of a sample of isolated galaxies should be largely the result of internal (natural) evolution. It follows that nur...

A workflow-centric research object bundles a workflow, the provenance of the results obtained by its enactment, other digital objects that are relevant for the experiment (papers, datasets, etc.), and annotations that semantically describe all these objects. In this paper, we propose a model to specify workflow-centric research objects, and show ho...

A workflow-centric research object bundles a workflow, the provenance of the results obtained by its enactment, other digital objects that are relevant for the experiment (papers, datasets, etc.), and annotations that semantically describe all these objects. In this paper, we propose a model to specify workflow-centric research objects, and show ho...

We will soon be facing a new generation of facilities and archives dealing with huge amounts of data (ALMA, LSST, Pan-Starrs, LOFAR, SKA pathfinders,..) where scientific workflows will play an important role in the working methodology of astronomers. While the traditional pipelines tend to produce exploitable products, sci-entific workflows are aim...

The AMIGA project (Analysis of the interstellar Medium of Isolated GAlaxies) aims to build a well defined and statistically significant sample of isolated galaxies that can serve as a reference for quantifying the role of theenvironment on the formation and evolution of galaxies. The completed statistical analysis of the multiwavelength AMIGA sampl...

Some of the shared digital artefacts of digital research are executable in the sense that they describe an automated pro-cess which generates results. One example is the compu-tational scientific workflow which is used to conduct auto-mated data analysis, predictions and validations. We de-scribe preservation challenges of scientific workflows, and...

We introduce and describe main results of the AMIGA project. AMIGA involves a panchromatic characterization for many of the most isolated galaxies in the local universe. Many of these galaxies have avoided major interaction events for all, or most, of their lives. Our studies show these galaxies to be the most IR/radio/optically “quiet” sample that...

The AMIGA project (Analysis of the interstellar Medium of Isolated GAlaxies) is an international collaboration led from the Instituto de Astrof\'isica de Andaluc\'ia (CSIC). The group's experience in radio astronomy databases turned, as a natural evolution, into an active participation in the development of data archives and radio astronomy softwar...

In this contribution we describe the development of a Virtual Observatory (VO) Archive for the DSS-63 antenna of the NASA Deep Space Communication Complex in Robledo de Chavela (Madrid). In an initial step the archive includes observations in the K-band (18–26 GHz) of the mentioned antenna with a future extension to other ranges, in particular the...

The scientific goals of the AMIGA project are based on the analysis of a significant amount of spectroscopic 3D data. In order to perform this work we present an initia-tive to develop a new VO compliant package, including present core applications and tasks offered by the Gronin-gen Image Processing System (GIPSY), and new ones based on use cases...

“A través del Universo” es un podcast radiofónico semanal dirigido a todos los públicos y con un objetivo: divulgar la Astrofísica de forma amena, entretenida, desenfadada y con el máximo rigor científico. El programa lo realiza personal del Instituto de Astrofísica de Andalucía (CSIC) y se distribuye en formato MP3 a través de la tecnología podcas...