The ULDA/INES Guides


The ULDA system

Data archiving was considered a fundamental activity from the very beginning of the IUE project. In 1986, ESA developed the IUE ULDA/USSP (Uniform Low Dispersion Archive / ULDA Support Software Package) to make IUE low-resolution spectra available in a way which would not involve project staff and simplify consulting IUE data. ULDA constituted a pioneering remote de-archiving initiative and became the first astronomical archive with direct access for users on a world wide basis much before the "Web Revolution".The low resolution data set was chosen because it represented a data set eminently suitable for remote de-archiving, while at the same time not overloading the facilities available in 1987. The ULDA/USSP system was formed by 24 National Host serving the need for IUE data of scientist in 27 countries. The details of the construction of the ULDA and the design of the USSP can be found in Wamsteker et al. (1989, A&AS 79,1) and in ESA IUE Newsletters #30, which also contains a Users Guide. The design and software coding of the USSP was a coordinated effort between the ST-ECF, R.A.L., Trieste Observatory and the ESA-IUE Observatory. The production of the ULDA and the overall coordination of the ULDA/USSP was done at the ESA-IUE Observatory at VILSPA. CADC and LAEFF were also involved in development activities.

Purpose of the ULDA/INES Guides

The quantity of data in the IUE Archive is so large that the task of addressing the data efficiently in the context of an astrophysical problem is not necessarily a simple one, even though access to the data is extremely easy. The purpose of the ULDA/INES Access Guide series is to facilitate the use of the IUE Archive for scientists with a specific astrophysical problem in mind. The ULDA/INES Access Guide series consists of a number of subject-oriented books, for which an specialist in the field has been invited to take scientific responsibility.

Taking advantage of the expertise gained with ULDA and the distribution system for the IUE Final Archive data, the ESA-IUE Observatory began to develop the INES system in 1997. INES aims at making accessible the complete dataset obtained by the IUE satellite during its operational lifetime to the scientific community in a simple, user-friendly and efficient form [ more on the INES system]. Since the availability of the INES data, the name of the ULDA Access Guides was changed accordingly to INES Access Guides.

List of ULDA Guides


Guide No. Title Authors Fetch
No.1 Dwarf Novae and Nova-like Stars C. la Dous. General Information
Tables and Figures
Index List & Star Names 
No.2 Comets M. Festou. n/a 
No.3 Normal Galaxies 
(superseded by INES Guide No 2)
G. Longo, M. Capaccioli. n/a 
No.4 Active Galactic Nuclei T.J.-L. Courvoisier, S. Paltini. General Information
Tables and Figures (I)
Tables and Figures (II)
X-ray Spectra of AGN's 
No.5 Chromospherically Active Binary Stars C. la Dous, A. Giménez. PART I: Contents & Foreword
Abstract and Introduction
Tables and Figures  


Abstract and Introduction
Tables and Figures
No.6 Supernovae E. Cappellaro, M. Turatto, J. Fernley. General Information
Tables and Figures 
No.7 K stars M. Franchini, C. Morossi, M.L. Malagnini.  (PDF, 2.4Mb)
No.8 T Tauri stars A.I. Gómez de Castro, M. Franqueira
Contents &  Introduction
General Description 
Tables and Figures


List of INES Guides


Guide No. Title Authors Fetch
No.1 Herbig-Haro Objects A.I. Gómez de Castro, A. Robles Contents & Introduction 
General Description
 Tables and Figures
No.2 Normal Galaxies
 (supersedes ULDA Guide No 3)
L. Formiggini, N. Brosch  Link
Classical Novae
A. Cassatella, R. González-Riestra, P. Selvelli. 
(PDF, 8.5 MB) 

Last update: 30 June 2004